A multi-polarization waveguide horn array antenna, according to an embodiment of the present invention, comprises: a single horn antenna arranged at each pair of coordinates consisting of natural numbers in X-Y coordinates comprising 16 columns along the X-axis and eight rows along the Y-axis; and a power distribution line for providing power to each single horn antenna, wherein the single horn antenna has a septum polarizer for separating a vertically polarized wave and a horizontally polarized wave, and has a first septum polarizer additionally connected to the foremost tip of the power distribution line, and the septum polarizer and the first septum polarizer are connected such that the phases thereof are in opposite directions.
This invention relates to a face recognition system and method capable of updating a registered face template. The system comprises: a registered template DB in which registered face templates are stored; an authenticated template DB for storing authenticated face templates; and a controller for storing the authenticated face template in the authenticated template DB according to the user's face authentication, obtaining a similarity degree between each of a plurality of the authenticated face templates by using the plurality of the authenticated face templates stored in the authenticated template DB after a predetermined period has elapsed, obtaining the value of an average similarity degree for each of the plurality of authenticated face templates by using the values of the similarity degree, selecting as a new registered face template the authenticated face template having the value of the largest average similarity degree among the values of the average similarity degree and updating the registered face template by storing the new registered face template in the registered template DB.
Provided is a pattern matching method using an image, the method comprising the steps of: receiving an input of a reference image; setting the input reference image as a first level, extracting feature points at preset intervals from the reference image, and acquiring feature data of each of extracted feature points; if the number of extracted feature points satisfies a preset reference, reducing the size of the input reference image by a preset reference ratio and setting the reduced image as a second level; and checking the size of the reference image of the second level, and if the size of the reference image satisfies a preset reference size, extracting feature points at preset intervals from the reference image of the second level, and acquiring feature data of each of the extracted feature points.
The present invention relates to a facial recognition system and method capable of updating a registered facial template. The facial recognition system according to the present invention may provide: a registered template DB in which a registered facial template is stored; an authenticated template DB for storing authenticated facial templates; and a control unit, which: stores an authenticated facial template in the authenticated template DB according to a user's facial authentication; after passage of a predetermined period, obtains mutual similarities for each of multiple authenticated facial templates stored in the authenticated template DB, by using the multiple authenticated facial templates; obtains average similarity values of the multiple authenticated facial templates by using the values of the mutual similarities; and selects, as a new registered facial template, an authenticated facial template having the largest average similarity value among the average similarity values, and stores the selected authenticated facial template in the registered template DB so as to update the registered facial template. Therefore, the registered facial template can be automatically updated.
05 - Pharmaceutical, veterinary and sanitary products
Goods & Services
Capsules having radiopaque markers for use in X-ray examinations (diagnostic aid); Diagnostic preparations for medical or veterinary purposes; Indicators for medical diagnosis.
A stent delivery device is disclosed. The stent delivery device comprises: a housing having a hollow space formed in the lengthwise direction thereof; a body part coupled to one side of the housing and having a predetermined length; and a handle part extending through and coupled to the body part to be slidable along the lengthwise direction of the body part, wherein a stopper is formed in a partial area of the outer circumferential surface of the body part to limit a sliding movement of the handle part, and when the handle part is rotated to a predetermined angle along the circumferential direction of the outer circumferential surface, movement limitation by the stopper is released to allow the sliding movement of the handle part.
A61F 2/966 - Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
The present invention relates to a drug-releasing biodegradable stent. The drug-releasing biodegradable stent includes: a first stent structure configured to have a plurality of cells by means of the wire crossing pattern of a woven structure and be provided in a hollow cylindrical shape by weaving a metal wire made of a shape-memory alloy in a specific pattern on a jig; and a second stent structure formed as a 3D print that is provided to have a plurality of cells by means of the wire crossing pattern of a printed structure and also have a hollow cylindrical shape by performing 3D printing using a printing material including a biodegradable polymer and a drug, and disposed such that it covers the outer circumferential surface of the first stent structure or the outer circumferential surface thereof is covered with the first stent structure.
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
A61F 2/82 - Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
A61L 31/16 - Biologically active materials, e.g. therapeutic substances
B29C 67/00 - Shaping techniques not covered by groups , or
B33Y 80/00 - Products made by additive manufacturing
B33Y 70/00 - Materials specially adapted for additive manufacturing
A61L 31/14 - Materials characterised by their function or physical properties
A61F 2/852 - Two or more distinct overlapping stents
A61F 2/86 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure
The present invention relates to a multi-hole stent for digestive organs, the multi-hole stent including: a body configured to form a plurality of cells through the intersection of wires and to be provided in a hollow cylindrical shape; and a film configured to be installed in contact with the inner surface of the body; wherein one or more discharge holes are formed in the film. The multi-hole stent for digestive organs is placed in a stenotic region in a biliary track, and can thus secure a discharge path by restoring a narrowed diameter. Furthermore, the film is installed on the inner surface of the body, and can thus prevent the entry of a lesion into the stent and re-stenosis attributable to the growth of the lesion and can thus provide discharge paths for body fluids generated from side branches through the discharge holes formed in the film.
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
A61F 2/91 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
A61F 2/852 - Two or more distinct overlapping stents
A61F 2/04 - Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
The present invention relates to a stent and a method for manufacturing the same. The stent includes: a first hollow cylindrical body portion formed by weaving a metal wire; a second hollow cylindrical body portion formed by weaving a metal wire, and configured to surround the first body portion; an expanded portion configured to form two adjacent ends of the first body portion and the second body portion integrally; and a membrane inserted between the first body portion and the second body portion, and configured to surround the outside of the first body portion. According to the present invention, there is no risk of the film being torn when the stent is bent, an additional connection wire is not required, the process of manufacturing the stent is simple, and the costs required for the manufacture of the stent are not high.
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
The present invention relates to a connection stent and a method of manufacturing the stent. The connection stent includes: a body configured to form a plurality of cells through the intersection of wires, and provided in a hollow cylindrical shape; an upper head formed to extend from one end of the body to have a diameter larger than that of the body; and a lower head formed to extend from a remaining end of the body to have a diameter larger than that of the body. The upper head and the lower head are respectively placed to come into contact with insides of heterogeneous tissues. Accordingly, according to the present invention, there can be manufactured a stent which can connect heterogeneous tissues and form a bypass and which can provide sufficient expansion force and minimum axial force for the maintenance of the bypass formed as described above.
A61B 17/11 - Surgical instruments, devices or methods, e.g. tourniquets for closing wounds, or holding wounds closed, e.g. surgical staples; Accessories for use therewith for performing anastomosis; Buttons for anastomosis
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
A61F 2/88 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
The present invention relates to a method for manufacturing a stent, the method using a jig in which detachable protruding pins are installed at all respective location points at which circumference division lines and length division lines intersect each other, the method forming cells through intersection of wire by setting any one of the location points as a start point and repeatedly bending and moving the wire from the start point upward and downward to pass over the protruding pins located in diagonal directions, wherein a first stent woven such that intersection portions formed through the intersection of a wire are spaced apart from each other in a diagonal direction and arranged one for each length division line and a second stent woven to maintain the structural stability of the first stent and to prevent the first stent from being twisted can be provided as a single stent.
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
A61F 2/86 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure
A61F 2/852 - Two or more distinct overlapping stents
A61F 2/915 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
The present invention relates to a drug-releasing biodegradable stent comprising: a first stent structure having metal wires, which are formed from a shape memory alloy material, woven into a particular pattern on a jig, and thus having a plurality of cells by means of the crossing wires of the woven structure and formed in the shape of a hollow trunk; and a second stent structure which covers the outer peripheral side of the first stent structure or of which the outer peripheral side is covered by means of the first stent structure. The second stent structure is a 3D printed product which is formed in the shape of a hollow trunk and has a plurality of cells by means of crossing wires of a printed structure formed by means of 3D printing using a printing material comprising a biodegradable polymer and a drug.
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
B29C 67/00 - Shaping techniques not covered by groups , or
A61L 31/14 - Materials characterised by their function or physical properties
A61L 31/16 - Biologically active materials, e.g. therapeutic substances
B33Y 70/00 - Materials specially adapted for additive manufacturing
B33Y 80/00 - Products made by additive manufacturing
14.
BIODEGRADABLE STENT HAVING DRUG STORED IN MICROPORES
The present invention relates to a biodegradable stent, having a drug stored in micropores, comprising: a first stent structure having metal wires, which are formed from a shape memory alloy material, woven into a particular pattern on a jig, and thus having a plurality of cells by means of the crossing wires of the woven structure and formed in the shape of a hollow trunk; and a second stent structure which has a plurality of cells by means of crossing wires of a printed structure formed by means of 3D printing using a printing material comprising a biodegradable polymer, has a plurality of drug-storing micropores formed on the entire surface thereof, and, as a 3D printed product formed in the shape of a hollow trunk, covers the outer peripheral side of the first stent structure or of which the outer peripheral side is covered by means of the first stent structure, wherein a drug coating procedure is performed on the surface of the second stent structure after the 3D printing and then a drug is stored in the plurality of drug-storing micropores.
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
The present invention relates to a multi-hole stent for digestive organs, which comprises: a body having a hollow cylindrical shape and having a plurality of cells formed by intersections between wires; and a film installed to contact the inner surface of the body, wherein the film has at least one discharging hole formed therein. Accordingly, the multi-hole stent for digestive organs is installed on a stenotic region in the biliary tract to restore a diameter that has narrowed, thereby securing a bile discharge pathway. At the same time, the film installed on the inner surface of the body can prevent entry into the stent and re-stenosis due to the growth of a lesion such as a malignant tumor on the stenotic region, and can also provide a discharge pathway for bodily fluid produced from side branches around the biliary tract through the plurality of discharging holes formed in the film.
A61F 2/91 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
A61F 2/852 - Two or more distinct overlapping stents
The present invention relates to an ultrasonic water treatment apparatus for causing a reforming change in an oscillated ultrasonic wave, thereby enabling water treatment to be more effectively performed. The ultrasonic water treatment apparatus according to the present invention comprises: at least one oscillator for generating vibrational energy; and a reversible pipe in through which fluid, to be water-treated, passes. Particularly, the reversible pipe is made from an amorphous material, and is formed such that the vibrational energy is incident to the reversible pipe and is transmitted through the reversible pipe to the fluid to be water-treated.
The present invention relates to a stent and a method for manufacturing the same. The stent includes: a first hollow cylindrical body portion formed by weaving a metal wire; a second hollow cylindrical body portion formed by weaving a metal wire, and configured to surround the first body portion; an integral portion configured to form two adjacent ends of the first body portion and the second body portion integrally; and a membrane inserted between the first body portion and the second body portion, and configured to surround the outside of the first body portion. According to the present invention, there is no risk of the film being torn when the stent is bent, an additional connection wire is not required, the process of manufacturing the stent is simple, and the costs required for the manufacture of the stent are not high.
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
The present invention relates to a connection stent and a method of manufacturing the stent. The connection stent includes: a body configured to form a plurality of cells through the intersection of wires, and provided in a hollow cylindrical shape; an upper head formed to extend from one end of the body to have a diameter larger than that of the body; and a lower head formed to extend from a remaining end of the body to have a diameter larger than that of the body. The upper head and the lower head are respectively placed to come into contact with insides of heterogeneous tissues. Accordingly, according to the present invention, there can be manufactured a stent which can connect heterogeneous tissues and form a bypass and which can provide sufficient expansion force and minimum axial force for the maintenance of the bypass formed as described above.
A61B 17/11 - Surgical instruments, devices or methods, e.g. tourniquets for closing wounds, or holding wounds closed, e.g. surgical staples; Accessories for use therewith for performing anastomosis; Buttons for anastomosis
A61F 2/88 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
The present invention relates to a connecting stent that comprises: a body part having a hollow cylindrical shape that has a plurality of cells formed by crossing metal wires; a head part extending from one end of the body part and having a diameter larger than that of the body part; and a film surrounding the inner or outer surfaces of the metal wires from the head part to a portion of the body part, wherein an opposite end of the body part and the head part are located inside heterogeneous organs of a human body, respectively. Therefore, according to the present invention, it is possible to manufacture a stent that can interconnect heterogeneous organs of a human body to form a bypass passage and can provide a sufficient expansion force and a minimal axial force in order to maintain the bypass passage formed in this way.
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
A61F 2/86 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure
A61F 2/82 - Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
The present invention relates to a method for manufacturing a stent and, more particularly, to a method for manufacturing a stent, in which a jig, having a detachable protrusion pin installed at all transition points at which circumference-dividing lines and length-dividing lines cross one another, is used, the circumference-dividing lines and the length-dividing lines being set by equally dividing the circumference (W) and length (L) of a cylinder having the same diameter (R) and length (L) as the stent to be manufactured, and in which cells are formed by intersecting of wires while bending and moving the wires in upward and downward directions such that the wires start from any one reference transition point serving as a starting point and pass through the protrusion pin located in the diagonal direction, wherein a first stent, which is woven such that intersections formed by intersecting of the wires are arranged one by one on each of the length-dividing lines so as to be spaced apart from each other in the diagonal direction, and a second stent, which is woven for the structural stability and warpage prevention of the first stent, may be provided as a single stent.
A61F 2/86 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
The present invention relates to a linking stent and to a production method for same, and the invention comprises: a main body which is provided in the shape of a hollow cylinder, and in which a plurality of cells are formed by means of intersection through wires; an upper head which is formed extending from one end of the main body, with a diameter that expands more than the diameter of the main body; and a lower head which is formed extending from the other end of the main body, with a diameter that expands more than the diameter of the main body, characterized in that the upper head and the lower head are provided so as to respectively abut inside two different types of tissue. Consequently, the present invention makes it possible to produce a stent which forms a bypass by linking between two different types of tissue, and which is able to impart minimal axial force and sufficient expansion force to maintain the bypass formed.
The present invention relates to a catheter for a stent operation. The catheter for a stent operation according to the present invention comprises: a solid bar of which one end is coupled to the side of a handle; an outer tube into which the solid bar is inserted, having an insertion hole through which a guide wire can be inserted from the outside to the inside, and of which one end is coupled to the side of the body; a guide tip coupled to the side of the solid bar, and guiding the guide wire by having a through-hole through which the guide wire passes; a connection tube for connecting and coupling the guide tip to the solid bar, wherein the solid bar has an accommodation groove, for preparing a space capable of accommodating the guide wire, formed in a predetermined section of a region to be connected to the connection tube, such that the guide wire can be accommodated inside of the outer tube. According to the present invention, the length of the guide wire is short but the structure is simple due to the rod-shaped solid bar, and thus there are effects of improving productivity by having a simple assembly and reducing the defect rate, and preventing operation defects.
Provided is a method for controlling a stimulation apparatus, which includes detecting a control input of a user, determining an operation mode and an operation strength based on the control input, generating an electrical stimulation signal corresponding to the operation mode and the operation strength, determining a state of the stimulation apparatus, providing an electrical stimulation corresponding to the electrical stimulation signal to the user through the electrode, when the stimulation apparatus is in the first state, and discharging residual charges of the stimulation apparatus according to a preset period, when the stimulation apparatus is in the second state. Here, the state of the stimulation apparatus may include a first state in which an electrode is electrically connected to the stimulation apparatus and a second state in which an electrode is not electrically connected to the stimulation apparatus.
The present invention relates to a stent comprising: a hollow tube-shaped stent body in which multiple metal wires having a plurality of curves are cross-linked to each other; and a coating film formed so as to cover the surface of the stent body, wherein silver (Ag) particles for inhibiting bacterial growth in a lesion region may be added in the coating film. According to the present invention, the silver particles contained in the coating film have an anti-bacterial effect which prevents the growth of bacteria in a lesion region, the coating film of the stent prevents a direct contact between a lesion region in the biliary tract and a blood vessel and substances passing through the stent, and the contact surface of the coating film formed on the stent supports the inner wall of the biliary tract and the blood vessel, thereby preventing in-stent restenosis of the biliary tract and the blood vessel, which is caused by neointima penetrating into the stent.
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
Provided is a transcutaneous electrical nerve stimulation (TENS) apparatus, which includes an electric signal generator configured to generate an electrical stimulation signal, an electrode configured to transmit an electrical stimulation corresponding to the electrical stimulation signal generated by the electric signal generator to a user, and a connection unit configured to connect the electric signal generator to the electrode, wherein the electrode includes a pair of annular contact points for an electrical connection with the electric signal generator. Here, the connection unit may include magnetic material.
INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY (Republic of Korea)
Inventor
Kwon, Hyuck Moon
Han, Jong Hyeon
Park, Hun Kuk
Jang, Bong Seok
Yun, Ho
Abstract
A stent for a confluent blood vessel of the present invention comprises: a plurality of first wires which consist of a number of rows in one direction and of which the shape is maintained inside a human body; a plurality of second wires which intersect with the first wires and are formed as a number of rows; and a connector which connects the portion where the first wires and the second wires intersect with each other, wherein a plurality of hollows are formed by the first wires and the second wires, and at least one of the plurality of second wires is decomposed after a predetermined time inside the human body. Accordingly, the following effects are anticipated: when removing the stent, removal is easy because the second wires consisting of the biodegradable polymer are gradually decomposed by bodily fluids; and a stent insertion effect can be expected to be sustained for a long time because the shape of the stent is maintained over a predetermined time. In addition, as drugs are sequentially released during the decomposing process of the second wires, there is an effect of drugs being continuously released.
A61F 2/89 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
A61L 27/58 - Materials at least partially resorbable by the body
A61L 27/54 - Biologically active materials, e.g. therapeutic substances
The present invention relates to a stent comprising: a stent body, in a tube form, which has metal wires intersect so as to form a net in a lattice or a mesh form and which has a hollow inside thereof; and a coating film which is formed by covering the surface of the stent body, wherein the coating film can be formed as a coating solution in which a silicone polymer, provided in a solution form, and hydrophobic polymer particles, having lower coefficient of friction than the silicone polymer, are stirred. The present invention has the advantages of: by means of a coating film having low frictional force, preventing material that passes through a lesion site from being deposited on the surface of a stent; the coating film of the stent preventing lesion cites of a bile duct or a blood vessel from coming in direct contact with material that passes through the stent; by having a contact surface of the coating film formed on the stent support the inner walls of the bile duct and the blood vessel, preventing restenosis of the bile duct and the blood vessel generated due to the proliferation of neointima inside the stent; and being applied to various lesion cites by having wear resistance and flexibility of the existing silicone coated stent maintained as much as possible.
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
A61L 27/50 - Materials characterised by their function or physical properties
INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY (Republic of Korea)
Inventor
Kwon, Hyuck Moon
Han, Jong Hyeon
Kim, Eun Jin
Park, Hun Kuk
Jang, Bong Seok
Yun, Ho
Kim, Sun Jong
Abstract
A stent for blood vessels, comprising a drug-impregnated biodegradable coating film, according to one embodiment of the present invention, comprises: a cylindrical stent main body in which a plurality of shape memory alloy wires having a plurality of bents are cross-connected, and having a cavity therein; and a coating film formed such that the stent main body is encompassed with a biodegradable polymer, wherein the coating film can be impregnated with a drug for inhibiting restenosis caused by neointimal hyperplasia of a lesion region. According to the present invention, a drug for inhibiting neointimal hyperplasia is impregnated in a coating film formed such that a stent is encompassed, and formed from a biodegradable polymer, and thus there are effects of preventing the restenosis of blood vessels by continuously delivering a drug to a lesion region during the degradation of a biodegradable polymer, and enabling the control of a drug release period according to the composition of a biodegradable polymer and the composition ratio thereof.
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
A61L 27/54 - Biologically active materials, e.g. therapeutic substances
The present invention relates to a stent and a method for manufacturing same. A stent comprises: a hollow and cylindrical first body portion which is formed by weaving metal wires; a hollow and cylindrical second body portion which is formed by weaving metal wires and surrounds the first body portion; an expanding tube portion which integrally forms both ends of the first body portion and the second body portion; and coating which is inserted between the first body portion and the second body portion and covers the outer side of the first body portion. A stent according to the present invention has no risk of coating being torn even when the stent is bent, does not require a separate connecting wire, and is simple and inexpensive to manufacture.
A61F 2/86 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
The present invention relates to a stent comprising: a hollow tubular stent body in which metal wires cross each other to form a lattice or mesh form of net; a first coating layer formed to surround the surface of the stent body; and a second coating layer formed on the surface of the first coating layer, wherein the second coating layer may be formed of a polymer solution having a lower frictional coefficient than the first coating layer in order to prevent a substance passing through a site of lesion from being attached to the surface of the first coating layer. According to the present invention, thanks to the coating layer having a low frictional force, a substance passing through a site of lesion can be prevented from sticking to the surface of the stent, and the coating layer of the stent can prevent sites of lesion of a bile passage and a blood vessel from making a direct contact with a substance passing through the stent. In addition, the contact surface of the coating layer formed on the stent can support the inner walls of the bile passage and the blood vessel, thereby preventing restenosis of the bile passage and the blood vessel caused by neointima penetrating into the stent.
A61F 2/90 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
The present invention relates to a cylindrical structure having a lumen inserted into the human body. According to the cylindrical structure having a lumen inserted into the human body of the present invention, a coating layer is formed at least partially on the inner surface of at least one of the end portions of the structure, and the coating layer contains a polymer and a bioactive material for controlling discharge.
The present invention relates to an identity verification apparatus. According to the present invention, a portion of a CCD to be used for a part other than iris recognition is minimized, thus enabling the CCD to be efficiently used. According to the present invention, the amount of unnecessary data among CCD images which may not be used in iris recognition is reduced, thus enabling the apparatus to be used in a more efficient manner. According to the present invention, the size of the image of the iris formed in the CCD may increase compared to conventional techniques, thus improving the resolution of the image.
A device for setting the position of an anchor on a subject, the anchor having a stimulating electrode of an electrode system for stimulating a cranial nerve inserted therein, comprises: a perpendicular shaft which is correctly positioned on the target location on the subject; an electrode fixing module, which is coupled to the lower end of the shaft, for fixing the stimulating electrode; and an anchor position setting module for gripping the anchor, which is coupled to the electrode fixing module to slide vertically with respect to the electrode fixing module, so as to move the anchor that is gripped closer to the target location on the subject.
An apparatus for fixing an anchor, into which a stimulating electrode of an electrode system for stimulating a cranial nerve is inserted, onto a target location on the skull, comprising: an anchor support portion including an anchor holder which is formed with a hollow portion for inserting a portion of the anchor therein, and an insertion portion which bends and is extended from the anchor holder; and an anchor moving portion having a slit, which is formed on one end for inserting the insertion portion of the anchor support portion so as to be attachable/detachable, for setting the position of the anchor that is inserted into the anchor support portion on the desired position on the skull of the subject. The apparatus further comprises a cover gripping portion, which is formed so that an insulation cover for the anchor can be inserted, and which can be attached to the other end of the anchor moving portion.
An electrode system for stimulating a cranial nerve comprises a stimulating electrode for electrically stimulating a specific area inside the skull of a subject, and an anchor which is fixed to the surface of the skull of the subject. The anchor comprises a flange portion, the bottom surface of which is fixed to the skull of the subject, which is provided with a through-groove into which the stimulating electrode is inserted, and an electrode holder, which is integrally formed with the flange portion at the upper portion of the flange portion, which is provided with an insertion groove that perpendicularly communicates with the through-groove of the flange portion. The stimulating electrode is inserted via the insertion groove on the electrode holder and the through-groove on the flange portion so as to reach the specific area. Also, the electrode system for stimulating a cranial nerve further comprises electrode support members, which are coupled to both sides of the electrode holder, for supporting from both sides the stimulating electrode that is inserted into the insertion groove on the electrode holder, and a connector, which is coupled to one side of the electrode holder by means of the electrode support member, for conveying current to the stimulating electrode.
The invention relates to an electro-optrode neural interface, comprising an optical fiber which is elongated so as to be insertable into a body, and which is located at a core portion so as to form an optical electrode portion, and a liquid crystal polymer (LCP) sample encircling the optical fiber. The LCP sample has an adhesive sheet, and an LCP electrode layer encircling the adhesive sheet, wherein the adhesive sheet and the LCP electrode layer are coupled to each other. The electro-optrode neutral interface is formed by combining, into a single unit, an electrical interface in which an electrode for stimulating deep brain or measuring neural signals from deep brain is arranged in a liquid crystal polymer and an optical interface such as an optical fiber, a waveguide and an endoscope. The electro-optrode interface of the present invention may enable an electro-optrode to be inserted into a body while electrically or optically monitoring the position of the electro-optrode in real time, and may be mass produced.
The present invention relates to an identification apparatus, and more particularly, to a portable identification apparatus which is manufactured to be portable to enable a user to identify the identities of others. According to the present invention, an image of an indicator which guides the user to an operating region of the identification apparatus is provided to the user together with an image of an objective person under identification, thus enabling the user to identify the identity of the objective person in an easier manner. According to the present invention, in addition to the identification of others, the user may provide his/her own image in accordance with the guiding image of the indicator when there is a need to identify his/her own identity, thus enabling the user to identify his/her own identity in an easier manner.
Disclosed herein is a micro-electrode array package including a micro-electrode array comprising: a substrate section including a liquid crystal polymer; an electrode section collecting and transferring bio-signals; and a cover section insulating and protecting the electrode section and including a liquid crystal polymer, wherein the electrode section is disposed in contact with one surface of the substrate section, the cover section is adhered in contact with the surface of the substrate section on which the electrode section is disposed, and a space independent from the external environment is formed between the substrate section and the cover section adhered thereto. Disclosed herein too is a method for manufacturing a micro-electrode array package, including: forming alignment holes in a substrate section including a liquid crystal polymer and a cover section including a liquid crystal polymer; forming site window holes for an electrode section-exposure in the cover section; forming an electrode section on one surface of the substrate section; aligning the substrate section and the cover section by the alignment holes, and adhering the substrate section and the cover section with each other; and cutting the substrate section and the cover section adhered thereto to provide an outer shape.
The invention relates to a transmitter for transmitting data in bio-implantable medical devices, comprising: an activation unit which transmits, to a receiver, a predetermined number of frame bits which indicate the start of data transmission so as to activate the receiver; a preamble state notification unit which transmits, at the state where the receiver is activated or during data transmission to the receiver, a preamble data signal for turning the receiver into a preamble state; and a synchronization unit which transmits synchronization data for synchronization between the transmitter and the receiver in the preamble state.
The present invention relates to an apparatus for measuring interfacial impedance between the body and a stimulating electrode, comprising: a first electrode connected to some cells in the body; a second electrode connected to other cells in the body so as to provide a current which is applied by a stimulator to the first electrode through the cells; a measurement unit for selectively extracting voltages loaded on the first and second electrodes according to currents applied to the first and second electrodes; a charge storage unit to which a relative potential corresponding to a voltage difference between the first and second electrodes is stored; an A/D conversion unit for converting the signal corresponding to the relative potential into a digital signal and for outputting the digital signal; and an impedance calculation unit for calculating the interfacial impedance between the first and second electrodes according to the digital signal outputted from the A/D conversion unit and the current applied to the second electrode. Therefore, according to the present invention, interfacial impedance between the body and a stimulating electrode implanted to the brain or muscle of the body can be measured by using the difference in voltages loaded on each electrode.
According to the present invention, an apparatus for manufacturing a multichannel electrode array for cranial nerve stimulation comprises: an electrode support (100) supporting a plurality of electric wires, and having a plurality of platinum rings inserted therein; a frame member (200) including a base (210), a pair of vertical frames (220), and a horizontal frame (240) to fix the electrode support (100); a rotating member (600) into the center of which the electrode support (100) is inserted, and which rotates such that electric wires are twisted, pair by pair, at the electrode support (100) so as to form a grid, when bobbins (700) that are wound with the electric wires slide; an elevating plate (500) rotatably and slidably supporting the rotating member (600); and a pair of left-side and right-side control units (800) and (900) which rotate the rotating member (600) such that the rotating member (600) slides along a length equal to that the grid. A multichannel electrode array manufactured according to the apparatus and method of the present invention can withstand unexpected forces and shocks as two pairs of electric wires (one disposed vertically and the other horizontally) move downward while alternately rotating so as to be twisted and form a grid, while a plurality of electric wires are vertically supported.
The electrode system for cranial nerve stimulation of the present invention comprises: a support-attachment part (42) for attaching a support (20); an electrode holder (40) which is formed with a stimulating-electrode-insertion part (44) formed for the attachment of a stimulating electrode (6) on the vertically bottom part of the support-attachment part (42), and which is formed so as to allow the attachment of a connecting wire (22) for supplying electricity to the stimulating electrode (6); and an anchor (60) for securing to the cranium of the subject, which is formed with an electrode-holder-insertion part (62) whereby the electrode holder (40), with the connecting wire (22) attached, is inserted into a hollow part (64). The electrode system of the present invention has a relatively straightforward structure and allows experiments to be carried out in a reliable fashion as the stimulating electrode is stably secured for the duration of the test even if the subject is moving freely.
Disclosed is an actuator. The actuator for enabling an object to enter or exit from a frame, comprises a support bracket installed at the frame; a movable bracket on which the object is mounted, and which is coupled to the support bracket such that the movable bracket is slidable in the entry/exit direction of the object; a winding wheel which is rotatably installed on the movable bracket, and which has an outer surface with a first winding portion and a second winding portion; a first wire having one end fixed at the exit side of the object and the other end wound in one direction onto the first winding portion; and a second wire having one end fixed at the entry side of the object and the other end wound in one direction onto the second winding portion. Thus, an actuator with a simple configuration which causes no mechanical friction can be obtained. In addition, manufacturing costs and noises of the actuator can be minimized.
A47B 21/00 - Tables or desks specially adapted for use at individual computer workstations, e.g. for word processing or other manual data entry; Tables or desks specially adapted for typing; Auxiliary devices for attachment to such tables or desks
F16H 7/00 - Gearings for conveying rotary motion by endless flexible members
F16H 9/00 - Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
Provided is an actuator for moving an object into or out of a frame, which comprises: a supporting bracket mounted to the frame; a movable bracket which is coupled with the supporting bracket and able to slide in the moving direction of an object, wherein the object is mounted thereon; a movable pulley mounted to the supporting bracket and able to move in the moving direction of the object; an elastic element interposed between the supporting bracket and the movable pulley; and a wire which has one end fixed to the supporting bracket, passes through the movable pulley, and has the other end fixed to the movable bracket. According to the actuator, noise, mechanical failure, malfunction and the like may be minimized, and the entire size of the actuator may be minimized by securing strokes by means of the movable pulley.
A47B 21/03 - Tables or desks specially adapted for use at individual computer workstations, e.g. for word processing or other manual data entry; Tables or desks specially adapted for typing; Auxiliary devices for attachment to such tables or desks characterised by adjustable parts, e.g. universally adjustable leaves, arm rests, wrist supports or mouse platforms the parts being horizontally adjustable, e.g. extensible, only
A47B 21/00 - Tables or desks specially adapted for use at individual computer workstations, e.g. for word processing or other manual data entry; Tables or desks specially adapted for typing; Auxiliary devices for attachment to such tables or desks
F16H 9/00 - Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
F16F 9/02 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only
45.
METHOD FOR INCREASING SENSITIVITY USING LINKER AND SPACER IN CARBON NANOTUBE-BASED BIOSENSOR
SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION (Republic of Korea)
M.I.TECH CO., LTD. (Republic of Korea)
Inventor
Sim, Sang Jun
Kim, Jun Pyo
Abstract
The present invention relates to a method for detecting a trace of a target material by mixing a linker and a spacer in a proper ratio in a carbon nanotube-based biosensor and then immobilizing the mixture on the surface of the carbon nanotube. Since the method can detect a specific material on a femtomol level, detection limits of conventional carbon nanotube transistor sensors can be substantially lowered, so a trace of a target material can be detected. Therefore, the method can be used as an innovative analysis method used in a medical sensor for disease diagnosis or an environmental sensor.
Disclosed is a strapless backless seamless adhesive brassiere without waterproofing and a manufacturing method thereof, in which an inner layer, an intermediate layer and an outer layer are sequentially laminated, adhered together using an adhesive agent, heat-pressed in a one-piece form, and then cut in a shape of brassiere cups and an adhesive region using ultrasonic waves, after which adhesiveness is applied only to the adhesive region of the brassiere other than brassiere cups to attach the brassiere to the skin of a wearer, wherein the adhesive layer uniformly infiltrates to a depth of about 1/2 of the thickness of the intermediate layer through the inner layer and is securely fixed using a solidification process through rapid cooling or high-temperature treatment. A dam is formed at an edge of the adhesive layer so that the adhesive layer is neither shoved nor squashed by external force, or an adhesive surface requiring adhesiveness is provided in a discontinuous form including a net or lattice form so as to ensure air permeability.
Provided is a filter bracket. The filter bracket includes: a filter; a hemispherical filter housing; a guide; and a '?'-shaped handle. The filter is attached and detached in a straight line sliding manner due to rotation of the handle so that a filter attaching and detaching work can be easily performed, a damage of an O-ring that is interposed between the filter and the adaptor caused by conventional rotation manner combination and sealing deterioration can be prevented.
The present invention provides a stent that allows a simple surgical operation for affected parts of a lumen in a human body, and particularly reduces a medical side effect by contact or friction between the inside of the lumen and the outside of the stent when the stent is removed from the lumen. The stent includes a cylindrical wire structure having an internal passage and wires that are bent along the internal passage to have peaks and valleys, and a cover film that covers the wire structure. In particular, the cover film covers the wires such that the wires are embedded at the outside of the wire structure and exposed at the inside.
A stent for securing a passageway of a body lumen in a constricted portion of the body lumen is disclosed. The stent includes a first cylindrical band body formed in a zigzag shape having a plurality of straight sections interconnected by first peaks and first valleys and having opposite ends that are integrally formed, a second cylindrical band body having a same structure as the first cylindrical band body, the second cylindrical band body being disposed such that second valleys of the second cylindrical band body face the respective first peaks of the first cylindrical band body and second peaks of the second cylindrical band body face the respective first valleys of the first cylindrical band body with a plurality of predetermined gaps of a first row, thereby defining a plurality of rhombus spaces of a first row, at least one first link member that is provided in at least one rhombus spaces of the first row to interconnect the first and second band bodies, at least one second link members that are provided in at least one rhombus spaces of the second row to interconnect the second and third band bodies.
A61F 2/91 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
A61F 2/915 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
