A system for use during surgical procedures. The system includes an implant and a tool. The implant combines a modular adjustable cage and a shim that locks the cage into position, after the cage has been adjusted to its final position and at its final height, in situ. The tool combines an expander and an inserter. A related method of using the system is also provided.
An orthopedic implant having a titanium or titanium alloy body with a plurality of surfaces. The orthopedic implant is produced according to a process comprising the steps of: (a) additively building the orthopedic implant; and then (b) mechanically, chemically, or mechanically and chemically eroding one or more surfaces of the orthopedic implant to (i) remove alpha case from, and (ii) impart an osteoinducting roughness including micro-scale structures and nano-scale structures into, the one or more surfaces.
A61L 27/50 - Materials characterised by their function or physical properties
A61B 17/58 - Surgical instruments or methods for treatment of bones or jointsDevices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
Orthopedic implants produced by additive manufacture, followed by refinement of exterior and interior surfaces trough mechanical erosion, chemical erosion, or a combination of mechanical and chemical erosion. Surface refinement removes debris, and also produces bone-growth enhancing micro-scale and nano-scale structures.
An orthopedic implant having a titanium or titanium alloy body with a plurality of surfaces. The orthopedic implant is produced according to a process comprising the steps of: (a) additively building the orthopedic implant; and then (b) mechanically, chemically, or mechanically and chemically eroding one or more surfaces of the orthopedic implant to (i) remove alpha case from, and (ii) impart an osteoinducting roughness including micro-scale structures and nano-scale structures into, the one or more surfaces.
A61L 27/50 - Materials characterised by their function or physical properties
A61B 17/58 - Surgical instruments or methods for treatment of bones or jointsDevices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
Implants for vertebral body or functional spinal unit replacement comprise a bioactive surface roughening on one or more of the anterior, posterior, and lateral surfaces of the implant. The bioactive surface includes macro-, micro-, and nano-scale structural features that contact vertebral bone that lines a specialized channel in a vertebrae, and thereby facilitate bone growth and osteointegration of the implant with the vertebral bone.
Interbody orthopedic spinal implants comprised of artificial material and related surgical instruments, namely, orthopedic fixation devices used in orthopedic transplant and/or implant surgery.
Interbody orthopedic spinal implants comprised of artificial material and related surgical instruments, namely, orthopedic fixation devices used in orthopedic transplant and/or implant surgery.
Interbody orthopedic spinal implants comprised of artificial material, namely, orthopedic fixation devices used in orthopedic transplant and/or implant surgery that incorporate proprietary roughened titanium surface technology, designed to promote bone growth and otherwise actively participate in the fusion process.
Interbody orthopedic spinal implants comprised of artificial material and related surgical instruments, namely, orthopedic fixation devices used in orthopedic transplant and/or implant surgery
A system for use during surgical procedures. The system includes an implant and a tool. The implant combines a modular adjustable cage and a shim that locks the cage into position, after the cage has been adjusted to its final position and at its final height, in situ. The tool combines an expander and an inserter. A related method of using the system is also provided.
A system for use during surgical procedures. The system includes an implant and a tool. The implant combines a modular adjustable cage and a shim that locks the cage into position, after the cage has been adjusted to its final position and at its final height, in situ. The tool combines an expander and an inserter. A related method of using the system is also provided.
An orthopedic implant having a titanium or titanium alloy body with a plurality of surfaces. The orthopedic implant is produced according to a process comprising the steps of: (a) additively building the orthopedic implant; and then (b) mechanically, chemically, or mechanically and chemically eroding one or more surfaces of the orthopedic implant to (i) remove alpha case from, and (ii) impart an osteoinducting roughness including micro-scale structures and nano-scale structures into, the one or more surfaces.
A61L 27/50 - Materials characterised by their function or physical properties
A61B 17/58 - Surgical instruments or methods for treatment of bones or jointsDevices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
Bone-contacting surfaces and free surfaces of orthopedic implants. The implants are additively manufactured, followed by mechanical, chemical, or mechanical and chemical erosion. At least some of the surfaces of the implants include an osteoinducting roughness that has micro-scale structures and nano-scale structures that facilitate and enhance osteoinduction and osteogenesis, as well as enhanced alkaline phosphatase, osterix, and osteocalcin expression levels along the pathway of mesenchymal stem cell differentiation to osteoblasts.
A61L 27/50 - Materials characterised by their function or physical properties
A61B 17/58 - Surgical instruments or methods for treatment of bones or jointsDevices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
A system for use during surgical procedures. The system includes an implant and an inserter. The implant has a faceted post that rotates, ribs adapted to receive impact from an instrument to help position the implant, and stops. The inserter has a sleeve, into and from which a hook retracts and extends and on which a tab is disposed, and a pair of catches. The hook and tab combine to lock the post into position and to release the post so that the post can rotate. The engagements between the hook and the post and between the tab and the post permit rotation of the implant in situ. The stops and catches define an articulation range for the implant relative to a longitudinal axis of the inserter. A related method of using the system is also provided.
Orthopedic implants produced by additive manufacture, followed by refinement of exterior and interior surfaces trough mechanical erosion, chemical erosion, or a combination of mechanical and chemical erosion. Surface refinement removes debris, and also produces bone-growth enhancing micro-scale and nano-scale structures.
B24C 3/32 - Abrasive blasting machines or devicesPlants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
B22F 10/00 - Additive manufacturing of workpieces or articles from metallic powder
B24C 11/00 - Selection of abrasive materials for abrasive blasts
B24C 1/00 - Methods for use of abrasive blasting for producing particular effectsUse of auxiliary equipment in connection with such methods
B22F 5/10 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
Orthopedic implants produced by additive manufacture, followed by refinement of exterior and interior surfaces trough mechanical erosion, chemical erosion, or a combination of mechanical and chemical erosion. Surface refinement removes debris, and also produces bone-growth enhancing micro-scale and nano-scale structures.
An orthopedic implant having a titanium or titanium alloy body with a plurality of surfaces. The orthopedic implant is produced according to a process comprising the steps of: (a) additively building the orthopedic implant; and then (b) mechanically, chemically, or mechanically and chemically eroding one or more surfaces of the orthopedic implant to (i) remove alpha case from, and (ii) impart an osteoinducting roughness including micro-scale structures and nano-scale structures into, the one or more surfaces.
Bone-contacting surfaces and free surfaces of orthopedic implants. The implants are additively manufactured, followed by mechanical, chemical, or mechanical and chemical erosion. At least some of the surfaces of the implants include an osteoinducting roughness that has micro-scale structures and nano-scale structures that facilitate and enhance osteoinduction and osteogenesis, as well as enhanced alkaline phosphatase, osterix, and osteocalcin expression levels along the pathway of mesenchymal stem cell differentiation to osteoblasts.
Bone-contacting surfaces and free surfaces of orthopedic implants. The implants are additively manufactured, followed by mechanical, chemical, or mechanical and chemical erosion. At least some of the surfaces of the implants include an osteoinducting roughness that has micro-scale structures and nano-scale structures that facilitate and enhance osteoinduction and osteogenesis, as well as enhanced alkaline phosphatase, osterix, and osteocalcin expression levels along the pathway of mesenchymal stem cell differentiation to osteoblasts.
An orthopedic implant having a titanium or titanium alloy body with a plurality of surfaces. The orthopedic implant is produced according to a process comprising the steps of: (a) additively building the orthopedic implant; and then (b) mechanically, chemically, or mechanically and chemically eroding one or more surfaces of the orthopedic implant to (i) remove alpha case from, and (ii) impart an osteoinducting roughness including micro-scale structures and nano-scale structures into, the one or more surfaces.
A screwdriver for resisting premature disengagement of a screw from the screwdriver. The screwdriver includes a shaft having a central axis; a tip radially aligned with the central axis of the shaft which includes an end opposite the shaft, at least one radial protrusion extending away from the central axis, and a notch; and a screw retention mechanism including a flexible member aligned with the notch and attached to either the tip or the shaft. The flexible member has an unattached end which is separated from the second end of the tip. When the tip is inserted into a recess of a screw, the flexible member flexes toward the central axis and creates an opposing elastic force which holds the screw to the tip.
B25B 23/10 - Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
22.
Clamping device for affixing a stop plate to an interbody implant
A system for affixing a stop plate to an interbody implant. The system includes a clamping device, a stop plate, and an inserter tool. The clamping device includes a body, a first clamping portion attached to the body including a stepped seat and a guide slot, and a second clamping portion attached to the body by a spring. Compressing the spring moves the second clamping portion away from the first clamping portion and expanding the spring moves the second clamping portion toward the first clamping portion.
Orthopedic implants produced by additive manufacture, followed by refinement of exterior and interior surfaces trough mechanical erosion, chemical erosion, or a combination of mechanical and chemical erosion. Surface refinement removes debris, and also produces bone-growth enhancing micro-scale and nano-scale structures.
Orthopedic implants produced by additive manufacture, followed by refinement of exterior and interior surfaces trough mechanical erosion, chemical erosion, or a combination of mechanical and chemical erosion. Surface refinement removes debris, and also produces bone-growth enhancing micro-scale and nano-scale structures.
Orthopedic implants produced by additive manufacture, followed by refinement of exterior and interior surfaces trough mechanical erosion, chemical erosion, or a combination of mechanical and chemical erosion. Surface refinement removes debris, and also produces bone-growth enhancing micro-scale and nano-scale structures.
Orthopedic implants produced by additive manufacture, followed by refinement of exterior and interior surfaces trough mechanical erosion, chemical erosion, or a combination of mechanical and chemical erosion. Surface refinement removes debris, and also produces bone-growth enhancing micro-scale and nano-scale structures.
Interbody orthopedic spinal implants comprised of artificial material and related surgical instruments, namely, orthopedic fixation devices used in orthopedic transplant and/or implant surgery
Interbody orthopedic spinal implants comprised of artificial material and related surgical instruments, namely, orthopedic fixation devices used in orthopedic transplant and/or implant surgery
29.
Methods for manufacturing implants having integration surfaces
A method of producing an interbody spinal implant. The method includes the steps of obtaining a blank having a top surface, bottom surface, opposing lateral sides, and opposing anterior and posterior portions, and applying a subtractive process (e.g., masked acid etching) to the top surface, the bottom surface, or both surfaces of the blank to form a roughened surface topography. Subsequently, the blank is machined to form the interbody spinal implant, which includes a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and a single vertical aperture where the top surface, the bottom surface, or both surfaces of the interbody spinal implant have the roughened surface topography produced by the subtractive process. This simplified method produces more accurate and repeatable implants with fewer process steps and defects, reducing process time and costs.
Implants for vertebral body or functional spinal unit replacement comprise a bioactive surface roughening on one or more of the anterior, posterior, and lateral surfaces of the implant. The bioactive surface includes macro-, micro-, and nano-scale structural features that contact vertebral bone that lines a specialized channel in a vertebrae, and thereby facilitate bone growth and osteointegration of the implant with the vertebral bone.
Implants for vertebral body or functional spinal unit replacement comprise a bioactive surface roughening on one or more of the anterior, posterior, and lateral surfaces of the implant. The bioactive surface includes macro-, micro-, and nano-scale structural features that contact vertebral bone that lines a specialized channel in a vertebrae, and thereby facilitate bone growth and osteointegration of the implant with the vertebral bone.
Implants are formed from a multiple staged process that combines both additive and subtractive techniques. Additive techniques melt powders and fragments of a desired material, then successively layer the molten material into the desired implant shape, without compressing or remelting for homogenization of the layers, thereby producing an implant that is substantially free of pores and inclusions. Subtractive techniques refine implant surfaces to produce a bioactive roughened surface comprised of macro, micro, and nano structural features that facilitate bone growth and fusion.
A system for anchoring implants to bones comprises a screw and fixation collar that when connected together inhibit axial movement of the screw and that when connected to an implant with a compatibly shaped aperture inhibit the screw's ability to back out from the bone and back out from the implant. The fixation collar includes a substantially C- shaped configuration partially surrounding a void, with first and second ends defining a gap that is slightly narrower in width than the diameter of the screw and being partially flexible to allow compression and expansion of the fixation collar to snap fit the collar around the screw.
A system for anchoring implants to bones comprises a screw and fixation collar that when connected together inhibit axial movement of the screw and that when connected to an implant with a compatibly shaped aperture inhibit the screw's ability to back out from the bone and back out from the implant. The fixation collar includes a substantially C-shaped configuration partially surrounding a void, with first and second ends defining a gap that is slightly narrower in width than the diameter of the screw and being partially flexible to allow compression and expansion of the fixation collar to snap fit the collar around the screw.
Thermal memory springs may form arches, or have coils or spring arms and truss arms that expand from a relaxed state when the thermal memory springs warm to a temperature that is about the body temperature of a human being. The thermal memory springs may be used to expand interbody implants from a compact state into an expanded state once the implant has been inserted into the desired location within the body and the thermal memory springs that form a part of the implant warms to body temperature. Ends of the expanded thermal memory spring may contact a bone surface, thereby being an anti-expulsion edge.
An implantable device for treating disc degenerative disease and arthritis of the spine. The implant is sized for placement into an intravertebral disc space. The implant has a body with a predetermined, defined, repeating, three-dimensional pattern at least partially on at least one of its surfaces. The pattern is adapted to create a surface area of bone-contacting features that enhance in-growth and biological attachment to a biocompatible material. Also disclosed are process steps for making the implant.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, and opposing anterior and posterior portions. At least a portion of the top surface, the bottom surface, or both surfaces has a roughened surface topography including both micro features and nano features, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction generated when the implant is placed between two vertebrae and to inhibit migration of the implant. The roughened surface topography typically further includes macro features and the macro features, micro features, and nano features overlap. Also disclosed are methods of using such implants and processes of fabricating a roughened surface topography on a surface of an implant. The process includes separate and sequential macro processing, micro processing, and nano processing steps.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and a single vertical aperture. The single vertical aperture extends from the top surface to the bottom surface, has a size and shape predetermined to maximize the surface area of the top surface and the bottom surface available proximate the anterior and posterior portions while maximizing both radiographic visualization and access to the substantially hollow center, and defines a transverse rim. The body may be non-metallic and may form one component of a composite implant; the other component is a metal plate disposed on at least one of the top and bottom surfaces of the body.
A composite interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, and opposing anterior and posterior portions; a first integration plate affixed to the top surface of the body; and an optional second integration plate affixed to the bottom surface of the body. At least a portion of the first integration plate, optional second integration plate, or both has a roughened surface topography including macro features, micro features, and nano features, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction, inhibit migration of the implant, and promote bone growth. Also disclosed are processes of fabricating a roughened surface topography, which may include separate and sequential macro processing, micro processing, and nano processing steps.
An interbody spinal implant, such as a solid-body or composite implant. The implant has at least one integration surface with a roughened surface topography including a repeating pattern, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction generated when the implant is placed between two vertebral endplates and to inhibit migration of the implant. The repeating pattern is formed of at least three at least partially overlapping repeating patterns. The repeating patterns may radiate at a fixed distance from at least one point and may include recesses having a slope of thirty degrees or less relative to the integration surface. Also disclosed are processes of fabricating the integration surfaces.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and a single vertical aperture. The single vertical aperture extends from the top surface to the bottom surface, has a size and shape predetermined to maximize the surface area of the top surface and the bottom surface available proximate the anterior and posterior portions while maximizing both radiographic visualization and access to the substantially hollow center, and defines a transverse rim.
An interbody spinal implant system includes an implant having separate, but joined top and bottom portions, a socket for receiving an expansion wedge, an expansion wedge, and an anchor pin. The anchor pin includes at least two prongs having a plurality of ridges or teeth. The top portion and the bottom portion each include a slot for receiving a prong of the anchor pin. A movable joint joins the top and bottom portions and allows the top and bottom portions to move vertically relative to each other.
A spinal implant having a top surface, a bottom surface, opposing lateral sides, and opposing anterior and posterior portions. At least one of the top surface and bottom surface has a roughened surface topography, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction generated when the implant is placed between two vertebrae and to inhibit migration of the implant. At least one of the top surface and the bottom surface also includes at least one self-deploying anchor having an expulsion tab and a bone-engaging tip that causes the implant to resist expulsion once the expulsion tab is deployed.
An interbody spinal implant including a body and an integration plate having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, and a substantially hollow center in communication with a vertical aperture. The body is recessed in a way that portions of the integration plate protrude above the top and/or bottom surface of the body to enhance the resistance of the implant to expulsion from the intervertebral space.
An interbody spinal implant (1) including a body having a top surface (10), a bottom surface (20), opposing lateral sides (30), opposing anterior and posterior portions (40,50), and a substantially hollow center in communication with a vertical aperture (60), which are filled with a bone graft material. The dimensions, shape, and position of the vertical aperture (60) facilitate contact between the bone graft material and vertebral endplate bone to support and enhance bone growth.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and a single vertical aperture. The single vertical aperture extends from the top surface to the bottom surface, has a size and shape predetermined to maximize the surface area of the top surface and the bottom surface available proximate the anterior and posterior portions while maximizing both radiographic visualization and access to the substantially hollow center, and defines a transverse rim. The body may be non-metallic and may form one component of a composite implant; the other component is a metal plate disposed on at least one of the top and bottom surfaces of the body.
spinal implants comprised of artificial materials featuring a titanium surface with a proprietary textured design to promote bone fixaton, growth, and otherwise actively participate in the fusion process
48.
Interbody spinal implant having a roughened surface topography on one or more internal surfaces
Interbody spinal implants comprise internal sidewalls having a roughened surface topography. The internal sidewalls may be those that surround a substantially hollow implant center, including the sidewalls of a vertical aperture and sidewalls of a transverse aperture. The roughened surface topography comprises macro, micro, and nano features that comprise an amplitude, a peak to valley height, and spacing.
A screw assembly and a spinal implant. The screw assembly includes a screw with a head and a shaft where a screw retention member is positioned beneath the head of the screw and substantially surrounds the shaft of the screw. The screw retention member is formed from a temperature-sensitive material. The screw retention member has a first contracted position adapted for inserting the screw through at least one hole in the spinal implant and a second expanded position adapted for retaining the screw within the at least one hole in the spinal implant. The screw retention member may be in the form of a coiled spring or a collar having a plurality of tabs.
An implantable device for treating disc degenerative disease and arthritis of the spine. The implant is sized for placement into an intravertebral disc space. The implant has a body with a predetermined, defined, repeating, three-dimensional pattern at least partially on at least one of its surfaces. The pattern is adapted to create a surface area of bone-contacting features that enhance in-growth and biological attachment to a biocompatible material. Also disclosed are process steps for making the implant.
An interbody spinal implant, such as a solid-body or composite implant. The implant has at least one integration surface with a roughened surface topography including a repeating pattern, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction generated when the implant is placed between two vertebral endplates and to inhibit migration of the implant. The repeating pattern is formed of at least three at least partially overlapping repeating patterns. The repeating patterns may radiate at a fixed distance from at least one point and may include recesses having a slope of thirty degrees or less relative to the integration surface. Also disclosed are processes of fabricating the integration surfaces.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, and optionally a substantially hollow center. The implant includes at least one transverse aperture on one or more of the posterior portion, the anterior portion, and at least one of the opposing lateral sides, and if the substantially hollow center is present, one or more of the transverse apertures may be in communication with the hollow center. The transverse aperture may comprise a notch.
An interbody spinal implant having at least three distinct surfaces including (1) at least one integration surface having a roughened surface topography including macro features, micro features, and nano features, without sharp teeth that risk damage to bone structures; (2) at least one graft contact surface having a coarse surface topography including micro features and nano features; and (3) at least one soft tissue surface having a substantially smooth surface including nano features. Also disclosed are processes of fabricating the different surface topographies, which may include separate macro processing, micro processing, and nano processing steps.
A composite interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, and opposing anterior and posterior portions; a first integration plate affixed to the top surface of the body; and an optional second integration plate affixed to the bottom surface of the body. At least a portion of the first integration plate, optional second integration plate, or both has a roughened surface topography including macro features, micro features, and nano features, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction, inhibit migration of the implant, and promote bone growth. Also disclosed are processes of fabricating a roughened surface topography, which may include separate and sequential macro processing, micro processing, and nano processing steps.
Processes for producing interbody spinal implants having a body with a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and a single vertical aperture; and optionally, one or two integration plates affixed to the body. The processes include applying an additive process, a subtractive process, or both processes to at least one surface of the interbody spinal implant to form a roughened surface topography having a regular repeating pattern. The roughened surface topography is specifically designed to provide certain frictional characteristics, load dispersion, and to influence the biological responses that occur during bone healing and fusion.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, and a substantially hollow center in communication with a vertical aperture. The body, vertical aperture, and bone contact surfaces of the implant each have a surface area that may be independently varied to enhance load support and facilitate implant integration with vertebral bone.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and a single vertical aperture. The single vertical aperture extends from the top surface to the bottom surface, has a size and shape predetermined to maximize the surface area of the top surface and the bottom surface available proximate the anterior and posterior portions while maximizing both radiographic visualization and access to the substantially hollow center, and defines a transverse rim. The body may be non-metallic and may form one component of a composite implant; the other component is a metal plate disposed on at least one of the top and bottom surfaces of the body.
An interbody spinal implant including a body and an integration plate having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, and a substantially hollow center in communication with a vertical aperture. The body is recessed in a way that portions of the integration plate protrude above the top and/or bottom surface of the body to enhance the resistance of the implant to expulsion from the intervertebral space.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, and a substantially hollow center in communication with a vertical aperture, which are filled with a bone graft material. The dimensions, shape, and position of the vertical aperture facilitate contact between the bone graft material and vertebral endplate bone to support and enhance bone growth.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and single vertical aperture, as well as an integration plate having a roughened surface topography on its top surface. The integration plate and implant body are joined together with a durable connection.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and single vertical aperture, as well as an integration plate having a roughened surface topography on its top surface. The integration plate and implant body are joined together with a durable connection.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and single vertical aperture, as well as an integration plate having a roughened surface topography on its top surface. The integration plate and implant body are joined together durable, complementary tongue and groove connections.
A method of using an interbody spinal implant by implanting the spinal implant into a patient in need of the spinal implant. The method includes accessing the disc space of the patient and locating the center of the disc space. The disc space is incised by making a window in the annulus of the disc space for insertion of the spinal implant. The endplates are cleaned of all cartilage and the disc structure, which is encapsulated by the annulus, is removed while avoiding damage to the endplate structure of the vertebrae. Optionally a size-specific rasp is selected and the disc space is cleared of all soft tissue and cartilage. Optionally the disc space is distracted by sequentially expanding it with distractors of progressively increasing heights. A spinal implant having a pre-determined size sufficient to balance frictional fit and elongation of the annulus is selected and seated in the disc space.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and single vertical aperture, as well as an integration plate having a roughened surface topography on its top surface.
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, a single vertical aperture, and a roughened surface topography on at least the top surface. The posterior portion has a generally rounded nose profile, and has a shorter height than the anterior portion such that the spinal implant comprises a lordotic angle for aligning the spine of a patient. The junctions of the top and bottom surfaces and the anterior portion comprise a sharp edge to resist expulsion of the spinal implant upon implantation.
An apparatus for distracting a disc space having an annulus. The apparatus includes a spinal implant having a pre-determined size sufficient to balance frictional fit in the disc space and elongation of the annulus. The implant has a top surface, a bottom surface, opposing lateral sides, and opposing anterior and posterior portions defining a substantially hollow center and a single vertical aperture. At least one of the opposing anterior and posterior portions presents a substantially flat impact face including an opening with an instrument retention feature. The apparatus also includes a rasp, a plurality of distractors, and an instrument able to engage and manipulate the spinal implant, the rasp, and the plurality of distractors. The size-specific rasp is adapted to clear the disc space of all soft tissue and cartilage. The plurality of distractors have progressively increasing heights adapted to distract the disc space before use of the spinal implant.
An implant that has a predefined ratio of load bearing surface area to the overall size of the implant body and specifically to the surface area of a centrally located opening of a vertical aperture which connects to a center void area or passage defined by the implant body shape. This invention discloses a critical ratio or balance between loading of contained graft material through the hollow center or central passage of the implant and the implant's frictional load bearing or contact area with e.g., adjacent vertebral bones. Application of this invention to a spinal implant provides an improved integration and integration rate of the graft material or the fusion of the adjacent vertebral bone structures. The ratio between implant load bearing surface area and implant central opening area maximizes implant internal volume and allows a large passage disposed medial laterally to allow for radiographic verification of fusion growth.
Proprietary roughened titanium surface technology, designed to promote bone growth and otherwise actively participate in the fusion process, applied to and sold as an integral component of interbody orthopedic spinal implants comprised of artificial material, namely, orthopedic fixation devices used in orthopedic transplant and/or implant surgery
69.
INTERBODY SPINAL IMPLANT HAVING INTERNALLY TEXTURED SURFACES
An interbody spinal implant including a body, the body comprising: a top surface; a bottom surface; opposing lateral sides; and opposing anterior and posterior portions; the top surface, bottom surface, opposing lateral sides, internal wall surface, and opposing anterior and posterior portions defining a substantially hollow center having a single vertical aperture defining an internal wall surface, the single vertical aperture (a) extending from the top surface to the bottom surface, (b) having a size and shape predetermined to maximize the surface area of the top surface and the bottom surface available proximate the anterior and posterior portions while maximizing both radiographic visualization and access to the substantially hollow center, and (c) defining a transverse rim, wherein at least a portion of the internal wall surface has a roughened surface topography.
A61L 27/44 - Composite materials, i.e. layered or containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
70.
Composite interbody spinal implant having openings of predetermined size and shape
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and a single vertical aperture. The single vertical aperture extends from the top surface to the bottom surface, has a size and shape predetermined to maximize the surface area of the top surface and the bottom surface available proximate the anterior and posterior portions while maximizing both radiographic visualization and access to the substantially hollow center, and defines a transverse rim. The body may be non-metallic and may form one component of a composite implant; the other component is a metal plate disposed on at least one of the top and bottom surfaces of the body.
This present invention relates to interbody spinal implants and methods of using such implants. Certain embodiments of the present invention are particularly suitable for placement using an anterior surgical approach. Certain embodiments of the present invention include a body having a top surface, a bottom surface, opposing lateral sides, and opposing anterior and posterior portions. Interbody spinal implants, as now taught, further include roughened surface topography on at least a portion of its top surface and/or bottom surface. Preferred embodiments of the interbody spinal implant are substantially hollow and have a generally oval-shaped transverse cross-sectional area. Preferred embodiments of further include at least one aperture that extends the entire height of the implant body. This vertical aperture also defines a transverse rim having greater posterior thickness than anterior thickness. Certain embodiments also preferably include at least one aperture that extends the entire transverse length of the implant body.
This present invention relates to interbody spinal implants and methods of using such implants. Certain embodiments of the present invention are particularly suitable for placement using an anterior surgical approach. Certain embodiments of the present invention include a body having a top surface, a bottom surface, opposing lateral sides, and opposing anterior and posterior portions. Interbody spinal implants, as now taught, further include roughened surface topography on at least a portion of its top surface and/or bottom surface. Preferred embodiments of the interbody spinal implant are substantially hollow and have a generally oval-shaped transverse cross- sectional area. Preferred embodiments of further include at least one aperture that extends the entire height of the implant body. This vertical aperture also defines a transverse rim having greater posterior thickness than anterior thickness. Certain embodiments also preferably include at least one aperture that extends the entire transverse length of the implant body.
