A method of mutual authentication between an implantable medical device (IMD) and an external device (ED) includes putting the IMD and the ED into a numeric comparison authentication mode; performing secure pairing that includes the IMD and ED exchanging public keys; producing, by both the IMD and ED, a respective confirmation value using both the public keys, and both the IMD and ED signing its respective confirmation value using its own private signing key; exchanging signed confirmation values; and continuing communication between the IMD and ED when both the IMD and ED verify a received signed confirmation value and ending communication when at least one of the IMD and ED does not verify the received signed confirmation value.
In various examples, a connector for an implantable medical device is configured to accept a lead therein and electrically couple to a lead contact of the lead. The connector includes a connector housing, which includes a bore portion including a bore hole therethrough. The bore hole includes a bore hole axis, the bore hole being sized and shaped to accept the lead within the bore hole. An attachment portion is coupled to the bore portion. The attachment portion includes an attachment hole within the attachment portion sized and shaped to accept a feedthrough wire within the attachment hole. The attachment hole includes an attachment hole axis offset from and non-parallel to the bore hole axis.
In various examples, a guidewire with tactile feel is described. The guidewire includes an elongate core wire including a distal end, a proximal end, and a longitudinal axis extending along a length of the core wire from the distal end to the proximal end. A tactile grip comprise a proximal portion of the core wire. The tactile grip comprises a groove and a contiguous un-grooved surface. In some examples, a method for making the guidewire is also described.
An implantable optical sensor having a sapphire window as an optically transparent ceramic micro-scale diffusion bonded to a titanium washer to form a sapphire window/titanium washer assembly is described. The titanium washer is then welded to the inner surface of a device housing in alignment with a housing opening. The micro-scale diffusion bond is formed using an electromagnetic beam emanating from a Gaussian-Bessel laser and has a thickness that is greater than 1 μm, and preferably ≥4 μm, with a weld width that is preferably ≥45 μm. Importantly, the diffusion bond is spaced from and intermediate undisturbed portions of the optically transparent sapphire and the opaque conductive titanium. A power source connected to an optical sensor aligned with the sapphire window is housed inside the device housing.
HIGH-VOLTAGE FILTERED FEEDTHROUGH ASSEMBLY HAVING A FILTER CAPACITOR GROUNDED TO A GOLD PAD NESTED IN A FERRULE POCKET OF THE FEEDTHROUGH FOR AN ACTIVE IMPLANTABLE MEDICAL DEVICE (AIMD)
The high-voltage and high-frequency pulse dielectric breakdown strength (DBS) of an implantable medical device is increased by positioning insulation materials on or adjacent to the external surfaces of a filter capacitor. Dielectric breakdown strength is further increased by adding polymeric or ceramic nanoscale metal oxide insulative powders to the insulation materials. The filter capacitor is grounded to the ferrule of a feedthrough through a gold pocket-pad nested in a recessed pocket of the ferrule.
A medical balloon comprises a braided construct of a low melting temperature bonding yarn and a high-strength reinforcing yarn. The braided structure is contacted to the outer surface of a polymeric balloon serving as a scaffold and then post-processed in a reflow heating step which elevates the assembly above the melting temperature of the bonding yarn. The reflow heating step causes the bonding yarn to melt and flow over, around and under the reinforcing yarn and over and around the balloon. When the melted bonding yarn is cooled to an ambient temperature, it bonds to the reinforcing yarn and to the outer surface of the balloon.
An internally grounded filter feedthrough having a filter capacitor connected to a feedthrough is described. The feedthrough comprises an insulator having an active conductive pathway extending to its device and body fluid sides, and a ground conductive pathway extending part-way through the insulator thickness from the insulator device side. An undercut extending into the insulator sidewall communicates with the ground conductive pathway but does not extend to the insulator device or body fluid sides or to the active conductive pathway. A braze seals the insulator sidewall to the ferrule and extends into the undercut so that the braze contacts the ground conductive pathway. That way, the braze provides a ground electrical path from a capacitor ground via to the ground conductive pathway in the insulator connected to the braze sealed to the ferrule.
An AMD has a main housing closed by an end cap. A PCB supports electrical contacts connected to electronic components. An electrical power source powers the electronic components. A metallic sleeve connected to an inner surface of the end cap has a sleeve lumen aligned with a cap lead opening. A terminal housing assembly has a number of insulator rings connected to a number of the metallic terminal housings in an alternating sequence extending distally from the sleeve. The insulator rings support silicone ring seals and the terminal housings support canted coil springs. Jumper wires connect the terminal housings of the terminal housing assembly to the electrical contacts of the PCB without an intermediate feedthrough. In use, the electrical contacts of a lead are moved through the sleeve lumen and into the terminal housing assembly to connect the electrical contacts to the canted coil springs of the terminal housings.
A modular lead connector for a medical device is described. The modular lead connector comprises an alumina ring having opposed first and second faces provided with respective first and second metallizations. First and second gold washers are contacted to the respective first and second metallizations, and the ceramic ring supporting the first and second gold washers is positioned between first and second titanium contact rings. Then, with the ceramic ring and the titanium contact rings being in axial alignment, they are hermetically connected to each other at respective first and second titanium/gold/alumina diffusion bonds. A lead connector assembly comprising at least two modular lead connectors in axial alignment and welded together is also described. An open sleeve is connected to a proximal-most one of the axially aligned modular lead connectors, and a terminal plate is welded to a distal-most one of the axially aligned modular lead connectors.
An implantable device includes a chargeable energy storage cell and a charging circuit. The charging circuit includes a secondary coil configured to receive charge energy inductively from a primary coil of an external device, an alternating current to direct current (AC-DC) converter circuit to configured to produce DC charge energy using the received charge energy, and a DC-DC step-down converter circuit configured to apply a stepped down DC charge energy to the energy storage element.
x from sliding on or delaminating from the rod-shaped current collector. A separator segregates the anode from contacting the cathode, and an electrolyte activates the anode/cathode.
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
Custom manufacture of medical devices and components therefor in the nature of medical technology, namely, catheters, membranes sold as a component of a medical device, textiles sold as a component of a medical device, coatings sold as an integral component of a medical device, implantable medical device components, and interventional medical device components Engineering, product design, and development services for others in the field of medical devices and components therefor in the nature of catheters, membranes sold as a component of a medical device, textiles sold as a component of a medical device, coatings sold as an integral component of a medical device, implantable medical device components, and interventional medical device components
13.
MEDICAL DEVICE INCLUDING SHAFT WITH FLAT WIRE COIL
In various examples, a shaft for an elongate medical device extends along a shaft length. The shaft includes a shaft axis, an outer surface, and an inner surface. The inner surface defines an inner lumen. A liner forms the inner surface of the shaft. A coil is disposed around and outwardly from the liner. The coil is formed from a flat wire. The flat wire includes a wire width and a wire height, wherein the wire height is greater than the wire width. The wire height extends substantially radially with respect to the shaft and the wire width extends substantially longitudinally with respect to the shaft. A jacket is disposed around and outwardly from the coil. The jacket forms the outer surface of the shaft.
A miniature electrochemical cell has a total volume that is less than 0.5 cc. The anode is a lithium sheet that is swaged onto an inner surface of a casing tube to form an anode lumen. The cathode comprises CFx contacting a rod-shaped current collector and the cathode having a cylindrical shape resides in the anode lumen. The rod-shaped cathode current collector has a cylindrically-shaped outer surface extending along a longitudinal axis. At least one helical groove recessed into the outer surface turns around the longitudinal axis at a constant distance while moving parallel to the axis. The helical groove prevents the CFx from sliding on or delaminating from the rod-shaped current collector. A separator segregates the anode from contacting the cathode, and an electrolyte activates the anode/cathode.
An active medical device comprises a ceramic housing having an annular rim surrounding an opening. A housing ferrule sealed to the annular rim has a ferrule opening. A PCB assembly contained inside the housing comprises a printed circuit board supporting a plurality of electronic components that are connected to electrical terminations. An electrical power source inside the ceramic housing powers the electronic components. The insulator of a glass-to-metal seal (GTMS) supports a plurality of terminal pins, and the device side portion of a terminal pin is connected to a respective one of the electrical terminations of the PCB assembly. This connects a terminal pin to an electronic component of the PCB assembly. Then, the GTMS ferrule is sealed to the housing ferrule so that the GTMS closes the opening of the ceramic housing containing the PCB assembly.
In various examples, a guidewire for temporary pacing of tissue includes an elongate core wire and a coil disposed along at least a portion of a length of the core wire. The coil is disposed radially outwardly from and around the core wire, wherein a core axis and a coil axis are substantially aligned. At least one electrode is disposed along the guidewire and includes an uninsulated portion of the core wire disposed within an electrode section of the coil. A spacing between adjacent windings of the electrode section of the coil is configured to allow a stimulation pulse to travel from the uninsulated portion of the core wire, through the spacing between the adjacent windings of the electrode section, and to the tissue in order to stimulate the tissue.
A case-neutral electrochemical cell comprises a jellyroll electrode assembly housed inside a cylindrically shaped casing. The anode has a tab connected to the perimeter of a metallic couple residing between a casing header and the electrode assembly. Separately, an anode lead is connected to the couple. This establishes continuity from the anode tab connected to the couple in turn connected to the anode lead extending from the couple and then in a non-conductive relationship through the header to serve as the negative terminal for the cell. A cathode lead, which had previously served as a winding mandrel for the electrode assembly, extends in a non-conductive relationship through both the couple and a second opening in the header. That way, the anode and cathode leads are both electrically isolated from the casing comprising the header closing an open-ended container housing the electrode assembly to provide the case-neutral cell design.
H01M 50/538 - Connection of several leads or tabs of wound or folded electrode stacks
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
H01M 4/485 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
H01M 4/50 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
H01M 4/52 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
H01M 4/54 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of silver
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 50/107 - Primary casingsJackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
An active medical device comprises an electrical energy power source powering a medical device. The power source has an open-ended casing that is hermetically sealed with a glass-to-metal seal (GTMS) supported in a lid closing the casing. The medical device has an open-ended housing that houses a PCB assembly which is configured to control functions of the active medical device. A sleeve provides a sleeve lumen, and a flex circuit resides inside the sleeve lumen. The flex circuit inside the sleeve lumen is connected to the power source and to the PCB assembly to power the active medical device, and the sleeve is connected to the medical device housing at the housing open end and to the power source casing adjacent to the lid supporting the GTMS to hermetically seal the active medical device.
An electrode assembly for an electrochemical cell comprises a current collector having opposed faces extending to a peripheral edge connected to a tab. The current collector tab has a tab height measured from the frame peripheral edge to a tab distal edge. An electrode active material is contacted to the current collector to form an electrode. A separator envelope housing the electrode comprises a separator collar having a collar height measured from the frame peripheral edge to a collar distal edge. The collar height is less than the tab height so that a distal portion of the current collector tab is left uncovered by separator material. A distal edge of the separator collar resides adjacent to an imaginary tab fold line along which the tab is intended to be folded. The imaginary fold line is intermediate the frame peripheral edge and the tab distal edge.
H01M 50/533 - Electrode connections inside a battery casing characterised by the shape of the leads or tabs
H01M 50/586 - Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
In various examples, a skirt for creating a seal between an implantable vascular device and vascular anatomy of a patient includes a seamless tubular structure. The tubular structure is formed from a textile material. A plurality of protrusions extend radially outwardly from the tubular structure. The protrusions are formed within and integral with the tubular structure. Each protrusion including an initial shape, wherein the protrusions are configured to flatten with pressure applied in a radially inward direction with respect to the tubular structure and recoil with pressure at least partially removed to regain the initial shapes of the protrusions, such that the protrusions conform to the vascular anatomy to create the seal between the implantable vascular device and the vascular anatomy.
A61F 2/00 - Filters implantable into blood vesselsProstheses, i.e. artificial substitutes or replacements for parts of the bodyAppliances for connecting them with the bodyDevices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
21.
Miniature active implantable medical device having a high-purity fused silica wafer assembly micro-bonded to a titanium power source housing
An active implantable medical device (AIMD) has a high-purity fused silica wafer assembly micro-bonded to the housing for the device's electrical energy power source. During the micro-bonding process, electromagnetic radiation passes through the fused silica wafer but impinges on the metal housing to create a micro-bond at the interface between the two materials. A printed circuit board (PCB) assembly resides inside a power source housing recess closed by the micro-bonded fused silica wafer. Two conductive pathways extend through the fused silica wafer from electrodes supported on a body fluid side of the wafer to the PCB. The PCB, in turn, is connected to the power source to energize the electrodes for providing stimulation therapy to a patient or for sensing biological signals from the patient.
In various examples, conductor management within a medical device includes providing a flexible substrate. The flexible substrate includes at least one routing feature. A hole is cut in the at least one routing feature with a cutting device. A conductor is passed through the hole in the at least one routing feature. The routing feature acts to maintain and manage positioning of the conductor within the medical device. The medical device, in some examples, includes a lead, with the conductor connected to an electrode of the lead after being routed through the routing feature.
A61B 5/259 - Means for maintaining electrode contact with the body using adhesive means, e.g. adhesive pads or tapes using conductive adhesive means, e.g. gels
A61B 5/273 - Connection of cords, cables or leads to electrodes
H02G 1/08 - Methods or apparatus specially adapted for installing, maintaining, repairing, or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
23.
ACTIVE MEDICAL DEVICE HAVING A LOW-PROFILE SOCKET HEADER FOR CONNECTION TO A LEAD
An (AMD) assembly has a device housing closed by a lid. A PCB assembly in the device housing is connected to a power source. A feedthrough connected to the lid has active terminal pins brazed into respective via holes in an insulator. A polymeric cover connected to the device housing has an axial recess extending along a cover lower surface. The proximal electrical contact portion of a lead comprises an M number of polymeric carriers, each supporting an electrical contact and contacting an N number of lead insulators in an alternating sequence extending distally from a proximal lead end. With the lead proximal electrical contact portion received in the cover axial recess and the cover received in a lid recess, an electrical contact supported by a carrier is connected to an active terminal pin connected to the PCB assembly and the electrical contact is connected to a lead electrode.
A kinetically limited micro-scale diffusion bond between sapphire as an optically transparent insulating ceramic and titanium as an opaque conductive metal is provided. The diffusion bond is formed using an electromagnetic beam emanating from a Gaussian-Bessel laser. The micro-scale diffusion bond has a thickness that is greater than 1 micron, and preferably greater than 4 microns, with a weld width that is greater than 45 microns. Importantly, the diffusion bond is spaced from and intermediate undisturbed portions of the optically transparent ceramic and the opaque conductive metal.
C04B 37/02 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
25.
EMI Filter Feedthrough Having A Single-Sided Oxide-Resistant System Ground Opposite A System Ground To An Oxidized Surface
A filtered feedthrough comprises an insulator sealed in a ferrule opening. A terminal pin sealed in an insulator via hole has a first end that extends outwardly beyond an insulator device side. A filter capacitor has a square- or rectangularly-shaped dielectric supporting interleaved active and ground electrode plates. A passageway extending through the dielectric has an internal metallization. An external metallization is contacted to opposed longitudinal sides of the dielectric outer surface. The capacitor ground electrode plates extend to the opposed external metallizations. The outwardly extending terminal pin end is connected to the internal metallization in the dielectric passageway which in turn is connected to the active electrode plates. A conductive material connects the capacitor external metallization at one of the longitudinal sides to an oxide-resistant surface on the ferrule while the other external metallization is connected to an oxidized surface of the ferrule.
A61N 1/375 - Constructional arrangements, e.g. casings
H01G 4/35 - Feed-through capacitors or anti-noise capacitors
H01R 13/40 - Securing contact members in or to a base or caseInsulating of contact members
H01R 13/52 - Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
H01R 13/66 - Structural association with built-in electrical component
H01R 13/719 - Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
26.
Active Medical Device Having A Dual Band Antenna Configuration Inside A Non-Conductive Enclosure Connected To A Metallic Sleeve Housing An Electrochemical Cell
An active medical device (AMD) has a low-profile ceramic housing that contains a communication antenna/inductive charging coil assembly that is hingedly connected to a PCB assembly. The communication antenna/inductive charging coil assembly is folded over the PCB assembly to provide a compact communication antenna/inductive charging coil assembly/PCB assembly that fits inside the ceramic housing. The ceramic housing does not interfere with communication/charging fields that are transmitted between external devices and the AMD when it is implanted in body tissue or worn outside the body. The PCB assembly draws power from a power source housed in a titanium sleeve connected to a distal end of the ceramic housing. A lead is connected to a feedthrough connector assembly at a proximal end of the ceramic housing. Electrodes of the lead are energized by the PCB assembly to provide electrical stimulation to body tissue, sense biological signals from body tissue, or both.
An active medical device (AMD) has a low-profile ceramic housing that contains a communication antenna/inductive charging coil assembly that is hingedly connected to a PCB assembly. The communication antenna/inductive charging coil assembly is folded over the PCB assembly to provide a compact communication antenna/inductive charging coil assembly/PCB assembly that fits inside the ceramic housing. The ceramic housing does not interfere with communication/charging fields that are transmitted between external devices and the AMD when it is implanted in body tissue or worn outside the body. The PCB assembly draws power from a power source connected to a distal end of the ceramic housing. A lead is connected to a feedthrough connector assembly at a proximal end of the ceramic housing. Electrodes of the lead are energized by the PCB assembly to provide electrical stimulation to body tissue, sense biological signals from body tissue, or both.
In various examples, an implantable medical device includes an enclosure including an enclosure wall. A feedthrough is sealingly disposed within an opening of the enclosure wall. A backfill feature includes a backfilling channel open to an exterior of the implantable medical device. A welding protection channel is fluidly coupled to the backfilling channel and extends from the backfilling channel to an interior of the enclosure. The backfilling channel and the welding protection channel fluidly couple the exterior of the implantable medical device and the interior of the enclosure for fluid backfilling of the interior of the enclosure. The backfilling channel is configured to be sealed with welding of the backfilling channel after fluid backfilling of the interior of the enclosure. The welding protection channel is configured to catch metallic projections from the welding of the backfilling channel to inhibit the metallic projections from entering the interior of the enclosure.
An electrochemical cell has an electrode assembly comprising an anode active material contacted to the inner surface of a casing, and a cathode active material contacted to a current collector connected to the terminal pin of a GTMS supported by the casing. The cathode is wrapped in a separator having a first lateral edge and a spaced-apart second lateral edge. The separator first and second lateral edges extend from a lower edge to an opposite upper edge. With the separator wrapped around the cathode, a lower portion of the separator first and second lateral edges and the lower edge are sealed to cover a cathode lower end, and an upper portion of the separator first and second lateral edges and the upper edge are sealed to cover a cathode upper end, but the first and second lateral edges in an intermediate section are unsealed. An electrolyte activates the electrode assembly.
H01M 50/107 - Primary casingsJackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
H01M 50/152 - Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
H01M 50/179 - Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells having curved cross-section, e.g. round or elliptic
In various examples, a wireless charger for an implantable medical device includes a housing including an interior. The housing includes a bottom side configured to face the patient proximate the location of the implantable medical device. A rechargeable battery is disposed within the interior of the housing. The battery is configured to store electricity. A coil is disposed proximate the bottom side of the housing and electrically coupled to the battery. The coil is configured to inductively couple with the implantable medical device with the charger placed against the patient proximate the location of the implantable medical device in order to inductively charge the implantable medical device using electricity from the battery.
A medical tray that is useful for containing an implantable medical device is a body cavity is described. The medical tray is particularly useful in a craniometry and comprises a ceramic insert joined to a metallic main tray. The main tray comprises a base plate extending to an upstanding main sidewall. An inlet extends inwardly through the main sidewall and into the base plate with the inlet having an inlet peripheral edge. The ceramic insert comprises a planar plate portion extending to an upstanding insert sidewall. The insert has an insert peripheral edge having an insert shape that is conformal with an inlet shape of the inlet peripheral edge. A metallization is supported on the insert peripheral edge and a braze joins the metallization supported on the insert peripheral edge to the inlet peripheral edge.
A filtered feedthrough comprises an insulator sealed in a ferrule opening. A terminal pin sealed in an insulator via hole has a first end that extends outwardly beyond an insulator device side. A filter capacitor adjacent to the insulator device side has a dielectric supporting interleaved active and ground electrode plates. A passageway extending through the dielectric has an internal metallization. An external metallization is on a terminated portion as opposed to an unterminated portion of the dielectric outer surface. The capacitor ground electrode plates extend to the external metallization at the terminated portion, but they do not extend to the unterminated outer surface portion. The outwardly extending terminal pin end is connected to the internal metallization in the dielectric passageway which in turn is connected to the active electrode plates. A conductive material connects the capacitor external metallization at the terminated dielectric outer surface portion to a system ground.
In various examples, an electrode for a medical device is described. The medical device includes a lead. The electrode includes a tubular ring formed from a conductive material. The ring extending around a perimeter of the electrode. The ring defines a void within the ring. The void is configured to accept overmolded material of the lead therein to anchor the electrode within the lead. An electrode surface is associated with the ring. The electrode surface is configured to contact and stimulate tissue of a patient with the lead implanted within the patient.
A self-centering ceramic washer is positioned between a feedthrough and a filter circuit board. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.
Self-centering ceramic washer that prevents misalignment when positioned between a feedthrough and an EMI filter capacitor or a circuit board supporting EMI filter capacitors for a medical device
A self-centering ceramic washer is positioned between a feedthrough and a filter circuit board. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.
Self-centering polymeric washer that prevents misalignment when positioned between a feedthrough and a circuit board supporting EMI filter capacitors for a medical device
A self-centering washer is positioned between a feedthrough and a filter circuit board. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.
In various examples, a component for a medical device is described. The component includes a conductor wire including a connection portion. An electrode is formed from a conductive tube. The conductive tube is compressed at least partially around the connection portion of the conductor wire to at least partially surround and couple to the connection portion.
In various examples, a header of an implantable device includes a first header portion and a second header portion at least partially disengageable from the first header portion. In a closed configuration, the first header portion is fully engaged with the second header portion, and in an open configuration, the first header portion is at least partially disengaged from the second header portion. At least one bore within the header is sized and shaped to accommodate a proximal end of a lead. The bore is split substantially longitudinally to form a first bore portion and a second bore portion. With the proximal end of the lead disposed within the bore and a positioning feature interacting with a lead feature, at least one lead contact aligns with at least one header contact to allow the at least one lead contact to electrically couple to the at least one header contact.
A case-neutral electrochemical cell has an electrode assembly comprising a separator positioned between an anode and a cathode housed inside a casing. The casing supports a co-axial glass-to-metal seal (GTMS) comprising an inner insulating glass hermetically sealed to a terminal pin and to the inner annular surface of an inner ferrule. An outer insulating glass is hermetically sealed to the outer annular surface of the inner ferrule and the inner annular surface of an outer ferrule. The outer ferrule is secured to an opening in the casing. Two methods are described for manufacturing a co-axial GTMS depending on the melting temperatures of the inner and outer insulating glasses. Then, one of the anode and the cathode is connected to the terminal pin and the other of the anode and the cathode is connected to the inner ferrule. An electrolyte is provided in the casing to activate the electrode assembly.
H01M 50/562 - Terminals characterised by the material
40.
Anisotropic conductive electrical connection from a conductive pathway through a ceramic casing to a circuit board electronic component housed inside the casing
An AIMD includes a ceramic base closed with a ceramic lid, both cooperatively separating body fluid and device sides. The lid and circuit board both have active and conductive pathways. A circuit board has active and ground conductive pathways. An anisotropic conductive layer disposed between the lid device side and the circuit board has a first thickness where a first conductive particle is in electrical contact with the lid and the circuit board active conductive pathways electrically connected to the active terminal of an electronic component on the circuit board, a second thickness where a second conductive particle is in electrical contact with the lid and the circuit board ground conductive pathways electrically connected to the ground terminal of the electronic component. The anisotropic conductive layer has a third, greater thickness where no conductive particles are in electrical contact with the lid and circuit board conductive active and ground pathways.
A ceramic reinforced metal composite (CRMC) comprising a composition composite as an interpenetrating network of at least two interconnected composites is described. The interpenetrating networks comprise a ceramic matrix composite (CMC) and a metal matrix composite (MMC). The composition composite is particularly useful as an electrically conductive pathway extending through the insulator or ceramic body of a hermetically sealed component, for example, a feedthrough in an active implantable medical device (AIMD).
An active medical device has a feedthrough comprising a ferrule sealed to a ceramic insulator supporting a short terminal pin and a long terminal pin that are connected to electronic components in the device housing. A silicone insulator residing in the ferrule abutting the ceramic insulator has first and second openings that house first and second metallic housings nesting respective coil springs. The metallic housings connected to the respective short and long terminal pins are axially aligned in the silicon insulator. A lead connector connected to a strain-relief for a lead supports a co-axial lead pin having electrically isolated center and circumferential outer conductors. When the lead connector/strain-relief subassembly is connected to the feedthrough, the center and circumferential conductors of the lead pin are electrically connected to the coil springs nested in the first and second metallic housings connected to the short and long terminal pins of the feedthrough.
A case-neutral electrochemical cell has an electrode assembly comprising a separator positioned between an anode and a cathode housed inside a casing. The casing supports a co-axial glass-to-metal seal comprising an inner insulating glass hermetically sealed to a terminal pin and to the inner surface of a first or inner ferrule. An outer insulating glass is hermetically sealed to the outer surface of the inner ferrule and the inner surface of a second or outer ferrule, and the outer ferrule is secured to an opening in the casing. Then, one of the anode and the cathode is connected to the terminal pin and the other of the anode and the cathode is connected to the first or inner ferrule. An electrolyte is provided in the casing to activate the electrode assembly.
A feedthrough terminal pin connector assembly for an active implantable medical device (AIMD) includes first and second terminal pin connectors, each comprising a sidewall having an exterior surface spaced from an interior surface defining a connector opening extending along a longitudinal axis. At least a first portion of the sidewall is electrically conductive. An electrically conductive compliant structure is supported by the electrically conductive portion of the sidewall in each of the first and second connector openings. A common housing contains the first and second terminal pin connectors with an insulative material electrically isolating the first and second electrically conductive sidewall portions from each other. The common housing is configured to be supported on a circuit board having at least a first and a second electrical circuits with the first and second electrically conductive portions being electrically connected to the respective first and second electrical circuits.
A case-neutral electrochemical cell has an electrode assembly comprising a separator positioned between an anode and a cathode housed inside a casing. The casing supports a co-axial glass-to-metal seal comprising an inner insulating glass hermetically sealed to a terminal pin and to the inner annular surface of an inner ferrule. An outer insulating glass is hermetically sealed to the outer annular surface of the inner ferrule and the inner annular surface of an outer ferrule, and the outer ferrule is secured to an opening in the casing. Then, one of the anode and the cathode is connected to the terminal pin and the other of the anode and the cathode is connected to the first or inner ferrule. An electrolyte is provided in the casing to activate the electrode assembly.
A case-neutral electrochemical cell has an electrode assembly comprising a separator positioned between an anode and a cathode housed inside a casing. The casing supports a co-axial glass-to-metal seal comprising an inner insulating glass hermetically sealed to a terminal pin and to the inner surface of a first or inner ferrule. An outer insulating glass is hermetically sealed to the outer surface of the inner ferrule and the inner surface of a second or outer ferrule, and the outer ferrule is secured to an opening in the casing. Then, one of the anode and the cathode is connected to the terminal pin and the other of the anode and the cathode is connected to the first or inner ferrule. An electrolyte is provided in the casing to activate the electrode assembly.
01 - Chemical and biological materials for industrial, scientific and agricultural use
07 - Machines and machine tools
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
chemical components for polymer conformal surface coatings, including parylene dimer and adhesion promoter coating application machines, namely vacuum depositor machines for the application of polymers, including parylene polymer custom coating application for others, namely, conformal chemical coating of parts, including parylene conformal coating of parts
48.
Auxiliary Strain Relief Member For The Lead Of An Active Implantable Medical Device
An active implantable medical device (AIMD) assembly has a medical device housing containing an electrical power source connected to control circuitry, and a header assembly connected to the device housing. The header assembly supports a plurality of co-axially aligned terminal blocks that are in open communication with a header opening. A conventional strain relief member is connected to the header assembly at the header opening. A number of different auxiliary strain relief devices are described. The auxiliary strain relief devices connect to the conventional strain relief member to help reduce tension and stress on a lead after the AIMD assembly is implanted in a body and the lead electrodes are connected to body tissue.
In various examples, a method of making a guidewire is described. The method includes placing a polymer jacket over a core wire. The core wire includes a first portion having a first profile and a second portion having a second profile. The first profile is smaller than the second profile. Heat is applied to the polymer jacket and the core wire to reflow the polymer jacket and fuse the polymer jacket to the core wire, wherein the polymer jacket forms a layer of substantially uniform thickness along a length of the core wire. In some examples, a guidewire made using the method is also described.
In various examples, an audible frequency generating system for use in an implantable device including a housing of the implantable device. The housing includes at least one wall formed to at least partially surround an interior of the housing. A frequency generator is configured to produce an audible sound within the interior of the housing. At least one conductor is electrically coupled to the frequency generator. A fastening element secures the conductor to the at least one wall of the housing, wherein the frequency generator is constrained within the housing by the at least one conductor secured to the at least one wall of the housing, such that the frequency generator includes a floating configuration relative to the housing.
The high-voltage and/or high-frequency pulse dielectric breakdown strength (DBS) of an implantable medical device is increased by strategically positioning insulation materials on or adjacent to the external surfaces of a filter capacitor. Dielectric breakdown strength is further increased by adding polymeric or ceramic nanoscale metal oxide insulative powders to the insulation materials.
A self-centering washer is positioned between the feedthrough and filter capacitor of a filtered feedthrough. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.
In various examples, a guidewire for temporary pacing of tissue includes an elongate core wire and a coil disposed along at least a portion of a length of the core wire. The coil is disposed radially outwardly from and around the core wire, wherein a core axis and a coil axis are substantially aligned. At least one electrode is disposed along the guidewire and includes an uninsulated portion of the core wire disposed within an electrode section of the coil. A spacing between adjacent windings of the electrode section of the coil is configured to allow a stimulation pulse to travel from the uninsulated portion of the core wire, through the spacing between the adjacent windings of the electrode section, and to the tissue in order to stimulate the tissue.
An electrochemical cell has a cylindrically-shaped casing tube with at least first and second lithium sheets swaged onto its inner surface. The first lithium sheet has respective spaced apart first right and left edges, and the second lithium sheet has spaced apart second right and left edges. The first and second right edges and the first and second left edges of the swaged first and second lithium sheets are adjacent to but spaced apart from each other by about 0.5° to about 1° about the inner circumference of the cylindrically-shaped casing tube. A novel process for swaging the first and second lithium sheets onto the inner surface of the casing tube is also described.
H01M 50/107 - Primary casingsJackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
H01M 4/134 - Electrodes based on metals, Si or alloys
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
A circuit board for an active implantable medical device (AIMD) has a circuit board land connected to at least one electrical circuit. A hermetic feedthrough terminal pin connector for the AIMD includes an electrical insulator hermetically sealed to an opening of an electrically conductive ferrule. A terminal pin of the feedthrough extends outwardly beyond the insulator. A terminal pin connector has an electrically conductive connector housing that is connected to the circuit board land by an electrical connection material. At least one electrically conductive prong supported by the connector housing contacts and compresses against the feedthrough terminal pin to thereby make a removable electrical connection between the circuit board and the terminal pin. An insulative material loaded with electrically insulative nanoparticles coats at least a portion of the sidewall of the connector housing and the electrical connection material connecting the connector housing to the circuit board land.
A pulse dischargeable electrochemical cell, preferably of a Li/SVO couple, is described. To help prevent lithium clusters from bridging to the terminal pin extending below the casing lid and connected to the cathode current collector tab, an elastomeric gasket directly contacts the inner surface of the lid. The elastomeric gasket is preferably a unitary member comprising an O-ring gasket portion that contacts the sealing glass of the glass-to-metal seal (GTMS), and a sheet-shaped gasket portion connected to the O-ring gasket portion and that contacts the inner surface of the lid. The GTMS does not have a ferrule. Instead, the sealing glass seals directly to the lid and to the terminal pin. The elastomeric gasket resides between the lid and an insulator compartment, which is described in co-assigned U.S. Pat. No. 10,629,862 to Roy et al.
An active medical device has a feedthrough with at least two terminal pins that are connected to electronic components in the device housing. A lead connector is connected to a strain-relief device for a lead. The lead connector supports at least two connector pins that are detachably connected to the device terminal pins to thereby connect the device electronic components to the lead electrodes. The device housing has a length extending along a longitudinal axis, and secondary axes of the terminal pins connected to the connector pins are aligned parallel to the longitudinal axis. The feedthrough also has spaced-apart distally extending arms with detents, and the lead connector has spaced-apart lateral recesses. With the detents of the feedthrough arms received in the lateral recesses of the lead connector, the medical device is detachably connected to the strain-relief device and the lead.
In various examples, a component for a medical device is described. The component includes a conductor wire including a connection portion. An electrode is formed from a conductive tube. The conductive tube is compressed at least partially around the connection portion of the conductor wire to at least partially surround and couple to the connection portion.
An active medical device has a feedthrough with at least two terminal pins that are connected to electronic components in the device housing. A lead connector is connected to a strain-relief device for a lead. The lead connector supports at least two proximally-facing C-shaped inserts with an annular spring nested therein that are detachably connected to the device terminal pins to thereby connect the device electronic components to the lead electrodes. The device housing has a length extending along a longitudinal axis, and secondary axes of the terminal pins connected to the C-shaped inserts/annular springs are aligned parallel to the axis with imaginary extensions of the connector axes extending into the device housing.
An active medical device has a feedthrough with at least two terminal pins that are connected to electronic components in the device housing. A lead connector is connected to a strain-relief device for a lead. The lead connector supports at least two connector pins that are detachably connected to the device terminal pins to thereby connect the device electronic components to the lead electrodes. The device housing has a length extending along a longitudinal axis, and secondary axes of the terminal pins connected to the connector pins are aligned parallel to the longitudinal axis. The feedthrough also has a hub that extends distally from the body fluid side end surface of the ferrule. The hub has an opening. The lead connector has an inlet with inlet opening. A screw in the hub and inlet openings secures the medical device to the lead connector, the strain-relief device, and the lead.
A novel wound electrode assembly for a lithium oxyhalide electrochemical cell is described. The electrode assembly comprises an elongate cathode of an electrochemically non-active but electrically conductive carbonaceous material disposed between an inner elongate portion and an outer elongate portion of a unitary lithium anode. That way, lithium faces the entire length of the opposed major sides of the cathode. This inner anode portion/cathode/outer anode portion configuration is rolled into a wound-shaped electrode assembly that is housed inside a cylindrically-shaped casing. A cylindrically-shaped sheet-type spring centered in the electrode assembly presses outwardly to limit axial movement of the electrode assembly. In one embodiment, all the non-active components, except for the cathode current collector, which is nickel, are made of stainless-steel. This provides the cell with a low magnetic signature without adversely affecting the cell's high-rate capability.
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
A61K 31/4439 - Non-condensed pyridinesHydrogenated derivatives thereof containing further heterocyclic ring systems containing a five-membered ring with nitrogen as a ring hetero atom, e.g. omeprazole
A61K 31/444 - Non-condensed pyridinesHydrogenated derivatives thereof containing further heterocyclic ring systems containing a six-membered ring with nitrogen as a ring hetero atom, e.g. amrinone
A61K 31/4545 - Non-condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems containing a six-membered ring with nitrogen as a ring hetero atom, e.g. pipamperone, anabasine
C07D 401/04 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring- member bond
C07D 401/12 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
C07D 417/06 - Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
C07D 417/08 - Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group containing two hetero rings linked by a carbon chain containing alicyclic rings
C07D 417/14 - Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group containing three or more hetero rings
H01M 4/134 - Electrodes based on metals, Si or alloys
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
An electrical power source comprises a casing made by diffusion bonding an intermediate ceramic ring to a titanium base plate and a titanium top ring. An anode housed in the resulting open-ended container is electrically connected to the base plate. A separator is positioned on the anode. Separately, a cathode is electrically connected to a titanium lid. The lid fitted on the titanium top ring opposite the intermediate ceramic ring is welded to the top ring to close the casing. An electrolyte filled into the casing through a fill port in the lid activates the anode/cathode assembly. The fill port is then hermetically sealed. Gold pads are individually contacted to the base plate and the lid, which serve as opposite polarity terminals for the power source.
In various examples, an enclosure for an implantable medical device includes a first enclosure portion and a second enclosure portion, wherein at least the first enclosure portion and the second enclosure portion are joined together to form the enclosure. At least one feature is configured for attachment of at least one component of the implantable medical device to the enclosure. The at least one feature is integrally formed with the enclosure. In some examples, the enclosure is formed by machining.
An implantable neural stimulation device is provided, comprising a body containing stimulation electronics, and a battery to provide stimulation energy, a lid, coupled to the body, the lid configured to at least partially seal the body and a header coupled to the body of the device. The header comprises a contact assembly electrically coupled to the stimulation electronics via at least one feedthrough wire extending through the lid, the contact assembly configured to connect to a stimulation lead to deliver the stimulation energy from the battery under control by the stimulation electronics, a charge coil configured to charge the battery, and a support component configured to support the charge coil. The support component is supported in position by the contact assembly.
Miniature electrical energy power source housed in a casing formed from an intermediate ceramic ring micro-bonded to upper and lower plate-shaped ceramic wafers
An electrical energy power source comprises a casing made by micro-bonding an upper ceramic wafer and a lower ceramic wafer to the opposed surfaces of a ceramic ring. The upper and lower ceramic wafers have respective first and second conductive pathways extends therethrough. A first current collector supporting a first active material layer contacts the upper ceramic wafer and the first conductive pathway, and a second current collector supporting a second, opposite polarity active material layer contacts the lower ceramic wafer and the second conductive pathway. A separator resides between the first and second active materials, and an electrolyte filled into the casing through a fill port activates the active materials. The first and second conductive pathways serve as opposite polarity terminals for the power source.
H01G 11/28 - Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features arranged or disposed on a current collectorLayers or phases between electrodes and current collectors, e.g. adhesives
H01G 11/70 - Current collectors characterised by their structure
H01G 11/82 - Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
H01G 11/84 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof
A heart valve replacement device and methods of manufacturing same are provided. The heart valve replacement device includes a substrate and a low-profile composite covering in conformal contact with the substrate and suturelessly attached to the substrate. The low-profile composite covering includes a textile base layer and a thermoplastic polymer coating integrated with the textile base layer. The thermoplastic polymer coating or select portions thereof are substantially fluid impermeable.
B29C 43/18 - Compression moulding, i.e. applying external pressure to flow the moulding materialApparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
A method for manufacturing a ceramic substrate by a 3D-printing process is described. The method comprises operating a 3D-printer to print a green-state ceramic body having a height extending to spaced apart first and second end surfaces and at least one via extending at least part-way along the height of the green-state ceramic body from the first end surface toward the second end surface. Then, the green-state ceramic body is sintered to provide the ceramic substrate with the at least one via. In cross-section, the at least one via has a square-shaped via with rounded corners.
In various examples, a method of establishing a communication session between an external device and an implantable medical device is described. The method includes generating at the external device a first private key and a first public key. A start session order is sent over a long-range communication channel. Evidence of physical proximity is sent from the external device to the implantable medical device over a short-range communication channel. A second private key and a second public key are generated at the implantable medical device. A first shared key is generated by the implantable medical device using the first public key and the second private key. A second shared key is generated by the external device using the second public key and the first private key. The first and second shared keys are used to encrypt and decrypt one or more messages between the external device and the implantable medical device.
G16H 40/67 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
A61N 1/372 - Arrangements in connection with the implantation of stimulators
G06F 21/62 - Protecting access to data via a platform, e.g. using keys or access control rules
G16H 40/63 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
70.
Clinical static strip magnet of alternating polarities to prevent inadvertent actuation of magnet-mode in an active implantable medical device
The present invention changes the magnet-mode of an active implantable medical device (AIMD) using a static strip magnet comprising at least a first, second and third magnet. The electronic circuits of the AIMD have been programmed to register when the static strip magnet has been swiped across the AIMD so that when the magnetic field-detection sensor detects a defined north and south polarity sequence of the first, second and third magnets, the electronic circuits have been programmed to enter into magnet-mode with electrical stimulation therapy of the body tissue and/or electrical sensing of biological signals from the body tissue being suspended, maintained in a preset mode, or placed in a programmed mode.
An active implantable medical device (AIMD) has an alumina housing supporting at least two electrodes. A printed circuit board (PCB) assembly resides inside the housing. Two sintered platinum-containing pathways extend through the housing thickness from the electrodes supported on the housing body fluid side surface to a housing device side surface. A device side end of each of the two platinum-containing pathways is in electrical continuity with an electrical contact supported on the PCB to energize the electrodes for providing stimulation therapy to a patient or for sensing biological signals from the patient.
An inductive charging antenna for charging the power source of an active implantable medical device (AIMD) is described. The charging antenna is supported on the body fluid side of the feedthrough insulator, on the device side of the insulator or it is embedded inside the insulator. The charging antenna is connected to electronic circuits housed inside the medical device to charge the power source so that the device can deliver electrical stimulation to a patient and receive sensed biological signals from body tissue, among other functionalities. If the charging antenna is supported on the insulator body fluid side, it is made from a biocompatible material such as platinum. However, if the charging antenna is embedded inside the feedthrough insulator or is supported on the device side of the insulator, it can be made from a less expensive material that is not biocompatible, for example, copper.
A miniature electrochemical cell of a secondary chemistry having a total volume that is less than 0.5 cc is described. Before the present invention, miniature secondary electrochemical cells have been known to experience undesirable open circuit voltage discharge during their initial 21-day aging period. It is believed that electrolyte permeating through the cathode active material and an intermediate carbonaceous coating contacting the titanium base plate of the casing is the source of the undesirable discharge. To ameliorate this, aluminum is contacted to the inner surface of the base plate inside the casing. While aluminum is resistant to the corrosion reaction that is believed to be the mechanism for degraded open circuit voltage in miniature secondary electrochemical cells containing lithium, it is not biocompatible. This means that titanium is still a preferred material for the casing parts including the base plate that might be exposed to body fluids, and the like.
A ceramic reinforced metal composite (CRMC) comprising a composition composite as an interpenetrating network of at least two interconnected composites is described. The interpenetrating networks comprise a ceramic matrix composite (CMC) and a metal matrix composite (MMC). The composition composite is particularly useful as an electrically conductive pathway extending through the ceramic body of a hermetically sealed component, for example, a feedthrough in an active implantable medical device (AIMD).
A wet tantalum electrolytic capacitor containing a cathode, fluidic working electrolyte, and anode formed from an anodically oxidized sintered porous tantalum pellet is described. The pellet is formed from a pressed tantalum powder. The tantalum powder is formed by reacting a tantalum oxide compound, for example, tantalum pentoxide, with a reducing agent that contains a metal having an oxidation state of 2 or more, for example, magnesium. The resulting tantalum powder is nodular or angular and has a specific charge that ranges from about 9,000 μF*V/g to about 11,000 μF*V/g. Using this powder, wet tantalum electrolytic capacitors have breakdown voltages that ranges from about 340 volts to about 450 volts. This makes the electrolytic capacitors ideal for use in an implantable medical device.
An active implantable medical device (AIMD) is described. The AIMD has a rechargeable electrical energy power source connected to a PCB assembly for powering the medical device. The AIMD can sense biological signals from a patient, or it can have at least two electrodes that provide stimulation therapy to the patient. An inductive charging coil housed inside an elongate device enclosure is connected to the power source. The inductive charging coil has winds of an electrically conductive wire or tape that wrap around the PCB. The winds of the inductive charging coil have an upper wind portion residing above the PCB and a lower wind portion below the PCB. Opposed curved ends of the inductive charging coil winds are continuous with the upper and lower wind portions. This structure provides the inductive charging coil with a length aligned along a longitudinal axis of the PCB. In that manner, the inductive charging coil occupies a space otherwise not used in an elongate cylindrical enclosure for an AIMD.
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A61N 1/05 - Electrodes for implantation or insertion into the body, e.g. heart electrode
H02J 50/12 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
H02J 50/90 - Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
77.
Three-dimensional printed feedthroughs for implantable medical devices
A ceramic subassembly manufactured by a 3D-printing process is described. The ceramic subassembly comprises a ceramic substrate having a sidewall extending to spaced apart first and second end surfaces. At least one via extends through the substrate from the ceramic substrate first end surface to the ceramic substrate second end surface. In cross-section, the via has a square-shape with rounded corners.
In various examples, a connector for an implantable medical device is configured to accept a lead therein and electrically couple to a lead contact of the lead. The connector includes a connector housing, which includes a bore portion including a bore hole therethrough. The bore hole includes a bore hole axis, the bore hole being sized and shaped to accept the lead within the bore hole. An attachment portion is coupled to the bore portion. The attachment portion includes an attachment hole within the attachment portion sized and shaped to accept a feedthrough wire within the attachment hole. The attachment hole includes an attachment hole axis offset from and non-parallel to the bore hole axis.
Miniature electrochemical cell having a casing of a conductive plate closing an open-ended ceramic container having a via hole supporting an electrically conductive pathway
A miniature electrochemical cell having a volume of less than 0.5 cc is described. The cell casing comprises an open-ended ceramic container having a via hole providing an electrically conductive pathway extending through the container. A metal lid closes the open-end of the container. An electrode assembly housed inside the casing comprises an anode current collector deposited on an inner surface of the ceramic container in contact with the electrically conductive pathway in the via hole. An anode active material contacts the current collector and a cathode active material contacts the metal lid. A separator is disposed between the anode and cathode active materials. That way, the electrically conductive pathway serves as a negative terminal, and the lid, electrically isolated from the conductive pathway by the ceramic container, serves as a positive terminal. The negative and positive terminals are configured for electrical connection to a load.
H01M 50/172 - Arrangements of electric connectors penetrating the casing
H01M 50/50 - Current conducting connections for cells or batteries
H01M 50/528 - Fixed electrical connections, i.e. not intended for disconnection
H01M 50/531 - Electrode connections inside a battery casing
H01M 50/545 - Terminals formed by the casing of the cells
H01M 50/548 - Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
H01M 50/559 - Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
H01M 50/109 - Primary casingsJackets or wrappings characterised by their shape or physical structure of button or coin shape
H01M 50/153 - Lids or covers characterised by their shape for button or coin cells
80.
Method For Providing A Substrate With Hermetic Vias For A Thin Film Electrochemical Cell Activated With A Solid Electrolyte And Housed In A Ceramic Casing
A method for providing a miniature electrochemical cell having a total volume that is less than 0.5 cc is described. The cell casing is formed by joining two ceramic casing halves together. One or both casing halves are machined from ceramic to provide a recess that is sized and shaped to contain the electrode assembly. The opposite polarity terminals are electrically conductive feedthroughs or pathways, such as of gold, and are formed by brazing gold into tapered via holes machined into one or both ceramic casing halves. The two ceramic casing halves are separated from each other by a metal interlayer, such as of gold, bonded to a thin film metallization layer, such as of titanium, that contacts an edge periphery of each ceramic casing half. A solid electrolyte of LiPON (LixPOyNz) is used to activate the electrode assembly.
A deflectable vascular peel away introducer assembly includes an elongated sheath including opposed proximal and distal end portions and at least two axial lumens extending therethrough. The elongated sheath includes at least two axially extending lines of weakness. A movable pull-wire is positioned within one of the two axial lumens. The movable pull-wire is anchored to the distal end portion of the elongated sheath to deflect a distal tip of the distal end portion of the elongated sheath. A method for deflecting and removing a vascular peel away assembly includes turning a deflection knob which causes deflection of a softer distal end portion of an elongated sheath along a primary curve. The method includes splitting spreadable handles at a proximal end portion of the elongated sheath along peel lines. The deflection can be 45 degrees or more.
A polymeric film cover assembly for isolating an electrochemical power source from the other components housed inside an implantable medical device is described. The cover assembly comprises a first shallow-formed shaped-cover of a polymeric film configured to cover a first portion of the exterior surface of the casing and a second shallow-formed shaped-cover of the polymeric film configured to cover a second portion of the exterior surface of the casing. With the first and second shaped-covers contacting the casing, the shaped-covers are connected to each other in an overlapping or butted relationship to substantially or completely cover the exterior surface area of the casing. The interlocking polyester shaped-covers are readily formable into the desired three-dimensional form factor of the casing of power source while maintaining a desirable film thinness.
Triple flip, clinical magnet multiple polarity and placement timed sensing to prevent inadvertent actuation of magnet-mode in an active implantable medical device
The present invention changes the magnet-mode of an active implantable medical device (AIMD) such that repeated application of a clinical magnet in a predetermined and deliberate time sequence will induce the AIMD to enter into its designed magnet-mode. In one embodiment, a clinical magnet is applied close to and over the AIMD and removed a specified number of times within a specified timing sequence. In another embodiment, the clinical magnet is applied close to and over the AIMD and flipped a specified number of times within a specified timing sequence. This makes it highly unlikely that the magnet in a portable electronic device, children's toy, and the like can inadvertently and dangerously induce AIMD magnet-mode.
A lead adapter for a patient treatment system comprises a housing having a plurality of inlets, each inlet being segregated from an immediately adjacent inlet by a housing intermediate wall. A plurality of electrical contact assemblies residing in the housing are electrically connected to a respective one of a plurality of electrical contact posts. Each contact post has an exposed terminal portion residing in one of the plurality of inlets. A header is movably secured to the housing to selectively open and close the housing. With the header in an open position, an implantable lead is movable into a longitudinally extending opening in the header. The header is then manipulatable into a closed position to move an electrical contact of the lead into contact with a respective one of the electrical contact assemblies electrically connected to a respective one of the electrical contact posts. That way, the electrical contacts of the implantable lead are in electrical continuity with an exposed terminal portion of a respective one of the electrical contact posts.
A capacitor having an anode of a pressed powder pellet is described. The pressed powder anode pellet has a contoured trough that extends inwardly into the height of the pellet from a peripheral edge of the pellet. A shaped anode wire has an embedded portion residing inside the pellet and an outwardly extending portion that is connected to the terminal pin of a feedthrough. The feedthrough is nested in the contoured trough. In order to prevent a crack from rendering the anode inoperable, the embedded portion of the anode wire is shaped to bridge the lateral extent of the contoured trough. Should a crack develop in the anode, the crack will intersect the embedded portion of the anode wire. As an embedded bridging wire structure, the crack in the anode pellet will not cause the shaped anode wire to break. Instead, the shaped anode wire provides electrical continuity from one side of the crack to the other so that the capacitor remains functional.
A miniature electrochemical cell of a primary or secondary chemistry with a total volume that is less than 0.5 cc is described. The cell casing comprises an annular sidewall connected to a base plate opposite an upper lid. A sealing glass forms a hermetic glass-to-ceramic seal with a dielectric material contacting a lower portion of the annular sidewall and a glass-to-metal seal with the base plate. Since the glass seals against three surfaces of the annular sidewall, which are the inner and outer sidewall surfaces adjacent to the lower edge, the glass seal is robust enough to withstand the heat generated when the lid is welded to the upper edge of the annular sidewall. The lid has a sealed electrolyte fill port that is axially aligned with an annulus residing between the inner surface of the annular sidewall and the electrode assembly.
H01M 50/00 - Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
H01M 50/109 - Primary casingsJackets or wrappings characterised by their shape or physical structure of button or coin shape
H01M 50/171 - Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
H01M 50/186 - Sealing members characterised by the disposition of the sealing members
In various examples, a method of conductor management within a medical device includes providing a flexible substrate. The flexible substrate includes at least one routing feature. A hole is cut in the at least one routing feature with a cutting device. A conductor is passed through the hole in the at least one routing feature. The routing feature acts to maintain and manage positioning of the conductor within the medical device. The medical device, in some examples, includes a lead, with the conductor connected to an electrode of the lead after being routed through the routing feature.
A61B 5/259 - Means for maintaining electrode contact with the body using adhesive means, e.g. adhesive pads or tapes using conductive adhesive means, e.g. gels
A61B 5/273 - Connection of cords, cables or leads to electrodes
H02G 1/08 - Methods or apparatus specially adapted for installing, maintaining, repairing, or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
88.
Dual separator design for medical implantable electrochemical cells
An electrochemical cell comprises a casing having an open- ended container closed by a lid. An anode and cathode are housed inside the casing. The cathode housed inside a primary separator envelope is electrically connected to a positive polarity terminal pin electrically isolated from the casing by a glass-to- The anode is electrically connected to the casing metal seal.
serving as a negative terminal. The primary separator enveloping the cathode is contained in a secondary separator comprising an open-ended bag-shaped member extending to an open annular edge. The open annular edge of the secondary separator resides between the cathode electrically connected to the terminal pin and the anode electrically connected to the casing. An electrolyte provided in the casing activates the anode and cathode.
A hermetic feedthrough terminal pin connector for an active implantable medical device (AIMD) includes an electrical insulator hermetically sealed to an opening of an electrically conductive ferrule. A feedthrough terminal pin is hermetically sealed to and disposed through the insulator, the feedthrough terminal pin extending outwardly beyond the insulator on the inside of the casing of the AIMD. A circuit board is disposed on the inside of the casing of the AIMD. A terminal pin connector includes: an electrically conductive connector housing disposed on the circuit board, wherein the connector housing is electrically connected to at least one electrical circuit disposed on the circuit board; and at least one electrically conductive prong supported by the connector housing, the at least one prong contacting and compressed against the feedthrough terminal pin, the at least one prong making a removable electrical connection.
In various examples, a shaft for an elongate medical device extends along a shaft length. The shaft includes a shaft axis, an outer surface, and an inner surface. The inner surface defines an inner lumen. A liner forms the inner surface of the shaft. A coil is disposed around and outwardly from the liner. The coil is formed from a flat wire. The flat wire includes a wire width and a wire height, wherein the wire height is greater than the wire width. The wire height extends substantially radially with respect to the shaft and the wire width extends substantially longitudinally with respect to the shaft. A jacket is disposed around and outwardly from the coil. The jacket forms the outer surface of the shaft.
The present invention relates to an oxyhalide electrochemical cell comprising an anode of a Group IA metal and a cathode of a composite material prepared from a first electrochemically active carbonaceous material and a second electrochemically non-active carbonaceous material. The cathode material of the present invention provides increased discharge capacity compared to traditional lithium oxyhalide cells. In addition, the cathode material of the present invention is chemically stable which makes it particularly useful for applications that require increased rate capability in extreme environmental conditions such as those found in oil and gas exploration.
A miniature electrochemical cell of a primary or secondary chemistry with a total volume that is less than 0.5 cc is described. The cell has a casing comprising an annular sidewall supported on a lower plate opposite an upper lid. The lid has a sealed electrolyte fill port that is axially aligned with an annulus residing between the inner surface of the annular sidewall and the electrode assembly. The fill port axially aligned with the annulus between the electrode assembly and the casing sidewall allows the casing to be filled with electrolyte using a vacuum filling process so that activating electrolyte readily wets the anode and cathode active materials and the intermediate separator.
A medical device including an elongated tubular body having opposed proximal and distal end portions and defining a longitudinal axis, the elongated tubular body including an interior lumen extending therethrough, wherein an inner surface of the interior lumen includes at least one longitudinal depression formed therein, configured to provide pressure relief to accommodate movement of a medical device passing through the interior lumen.
In various examples, a component for a medical device is described. The component includes a conductor wire including a connection portion. An electrode is formed from a conductive tube. The conductive tube is compressed at least partially around the connection portion of the conductor wire to at least partially surround and couple to the connection portion.
A lid assembly for an electrochemical cell comprises a plate-shaped lid having an opening and a glass-to-metal seal (GTMS) residing in the lid opening. The GTMS does not have a ferrule. Instead, the GTMS has a sealing glass that seals directly to a terminal pin and to the lid. The terminal pin has an enlarged diameter pin section contacted by the sealing glass and a first reduced diameter pin section extending axially outwardly from the enlarged diameter pin section. An electrochemical cell provided with the lid assembly is also described.
An EMI/energy dissipating filter for an active implantable medical device (AIMD) comprises a first gold braze sealing an insulator to the ferrule of a glass-to-metal seal (GTMS) and a lead wire that is sealed in a passageway through the insulator by a second gold braze. A circuit board is disposed adjacent to the insulator. A two-terminal chip capacitor disposed adjacent to the circuit board has an active end metallization connected to its active electrode plates and a ground end metallization connected to its ground electrode plates. A ground electrical path extends from the ground end metallization of the chip capacitor, through a circuit board ground plate disposed on or within the circuit board, and to the ferrule. An active electrical path extends from the active end metallization of the chip capacitor to the lead wire of the GTMS.
H05K 9/00 - Screening of apparatus or components against electric or magnetic fields
H03H 1/00 - Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
H05K 5/00 - Casings, cabinets or drawers for electric apparatus
H01R 13/7195 - Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with planar filters with openings for contacts
H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
H05K 1/18 - Printed circuits structurally associated with non-printed electric components
97.
Header connection system for implantable medical device
In various examples, a header of an implantable device includes a first header portion and a second header portion at least partially disengageable from the first header portion. In a closed configuration, the first header portion is fully engaged with the second header portion, and in an open configuration, the first header portion is at least partially disengaged from the second header portion. At least one bore within the header is sized and shaped to accommodate a proximal end of a lead. The bore is split substantially longitudinally to form a first bore portion and a second bore portion. With the proximal end of the lead disposed within the bore and a positioning feature interacting with a lead feature, at least one lead contact aligns with at least one header contact to allow the at least one lead contact to electrically couple to the at least one header contact.
A kink-resistance catheter has a first pair of core wires residing in the catheter body on opposed side of a catheter lumen. The core wires have relatively stiff proximal ends but taper toward their distal ends. The tapered construction provides the core wires with a degree of distal flexibility that helps the catheter advance along a vasculature to a site of interest without kinking and with improved torsional rigidity. If desired, shaping ribbons are provided in the catheter body adjacent to the distal ends of the core wires. The shaping ribbons can be pre-bent before a surgical procedure to help the physician advance the catheter along the vasculature. Finally, the core wires provide the ability to push the catheter through the vasculature with out the need for the catheter to go over a guidewire already in-situ in the vasculature.
A miniature electrochemical cell of a primary or secondary chemistry with a total volume that is less than 0.5 cc is described. The cell has a casing comprising an annular sidewall supported on a lower plate opposite an upper lid. The lid has a sealed electrolyte fill port. At least one electrolyte channel in the inner surface of the lid extends radially from the fill port and outwardly beyond an outer peripheral edge of the current collector. A current collector contacts an inner surface of the lid with a first electrode active material contacting the current collector. An opposite polarity active material contacts the lower plate. A dielectric material coats the lower open end of the annular sidewall and a portion of the inner surface of the sidewall. A glass seals the dielectric material to the lower plate. An electrolyte activates the electrode assembly.
A device that is implantable in body tissue of a human or animal. The device is comprised of a header comprising at least one terminal adapted for removable connection to a lead and an open ended case closed by a plate to form a housing. The housing is comprised of a surrounding edge wall joined to a first side wall and a second side wall opposed to the first side wall. At least a first suture port extends through the edge wall and the second side wall but not the first side wall at an upper edge region of the housing. A second suture port may extend through the surrounding edge wall and the second side wall but not the first side wall in a similar manner. A third suture port may extend through the header. The three suture ports may define a triangular attachment configuration.
