摘要:
A cylindrical, fibrous, porous joint spacer is provided, having excellent properties, flexibility of formation, and operability, which is intended to be implanted as a prosthesis between bones (8,9) to be joined together. The joint spacer of the present invention can be formed from a strip of fabric (1), which is comprised of bioabsorbable fibers and made by a knitting, weaving, non-woven or other technique. The fabric (1) is typically relatively narrow (e.g. 1 to 10 mm wide) and thin (e.g. 0.1 to 1.0 mm thick), depending on the intended application of the prosthetic device to be formed from the fabric (1). The joint spacer of the present invention is made by wrapping said fabric (1) to yield a cylindrical body (2); and fixing the free end of the fabric (1) to the surface of the cylindrical body (2) so formed. The joint spacer of the present invention can be implanted in conjunction with one or more fixation parts (14',14''), to hold the joint spacer in place between the bones (15,16) to be joined.
摘要:
A bone cap implant (10) of the type used to cover a remaining portion of a resected bone, such as metatarsal, metacarpal or phalangeal bones. The bone cap serves as an articulation surface for the proximal phalanx in the metatarsophalangeal, metacarpophalangeal or interphalangeal joints. A method of making the bone cap by forming an existent tubular sleeve (12) made of expanded PTFE integrally bonded to non-expanded PTFE (14) without the use of adhesives. A method of forming a structure onto an existent structure, such as one made of expanded PTFE, by sintering without the use of adhesives.
摘要:
Cet implant d'arthrodèse interphalangienne (2) comprend une partie d'ancrage proximale (6) destinée à être engagée et ancrée dans le canal médullaire d'une première phalange sectionnée selon un premier plan d'ostéotomie, la partie d'ancrage proximale (6) comportant une pluralité de branches d'ancrage proximales (12) pourvues chacune d'au moins un élément d'ancrage osseux (13) ; et une partie d'ancrage distale (8), reliée à la partie d'ancrage proximale (6), destinée à être engagée et ancrée dans le canal médullaire d'une deuxième phalange sectionnée selon un deuxième plan d'ostéotomie, la partie d'ancrage distale (8) comportant une pluralité de branches d'ancrage distales (18) pourvues chacune d'au moins un élément d'ancrage osseux (19). La partie d'ancrage distale (8) comprend une portion de butée (16) comportant une surface de butée (17) destinée à prendre appui contre une surface sectionnée de la première phalange s'étendant selon le premier plan d'ostéotomie.
摘要:
The invention comprises an implant having a first end section and a second end section, where the first end has a cancellous thread for implantation in a first section of bone and the second end includes expansion slots and barbs or wings, that that resist movement out of a second section of bone. These anchors expand outwardly when a rigid wire, such as a k-wire is fed through a central cannulation in the implant and either the wire expands in diameter or the cannulation decreases in diameter. The implant also includes a collar intermediate to the first and second section which includes one or more surfaces to allow the first section to be screwed into a first bone section.
摘要:
A surgically implantable device (1;10) is described, made of a single piece of silicone, for joining phalanxes, metacarpus -phalanx or metatarsus-phalanx bones of the hand or foot in arthroplasty surgery, comprising an enlarged central portion (2) formed by a thickened portion (5) having a rounded profile and provided with a canal (6) extending transversally in which a depression (7) is centrally formed, and by two elongated stem portions (3,4) which extend from said enlarged central portion (2), one opposed to the other, characterised in that said device (1,10) is coated completely with at least one layer of turbostratic pyrolytic carbon less than or equal to 10 microns thick obtained by Physical Vapour Deposition (PVD).
摘要:
The invention concerns an arthroplasty implant for providing a joint between first and second members of the body, such as a metatarsophalangeal (MTP) joint, a metacarpophalangeal (MCP) joint or a proximal interphalangeal (PIP) joint. The implant of the invention includes a first component (10) defining a concave surface (14), a second component (20) defining a convex surface (24) and an intermediate component (32) which is located between the first and second components. The intermediate component has a convex surface (36) which is slidable on the concave surface of the first component to allow articulation between the first component and the intermediate component and a concave surface slidable on the convex surface of the second component to allow articulation between the second component and the intermediate component. A means (16, 38; 50, 60) is provided to prevent the intermediate component from separating laterally from at least one of the first and second components.
摘要:
L'implant (94 ; 95 ; 96) selon l'invention est destiné à servir de pièce d'interposition entre des surfaces osseuses d'un patient. Il est caractérisé en ce qu'il est conçu en un matériau comprenant du pyrocarbone, et en ce qu'il est dépourvu de tout moyen de fixation, de telle sorte que l'implant reste libre par rapport aux surfaces osseuses lorsqu'il est introduit dans le patient.
摘要:
A cylindrical, fibrous, porous joint spacer is provided, having excellent properties, flexibility of formation, and operability, which is intended to be implanted as a prosthesis between bones (8, 9) to be joined together. The joint spacer can be formed from a strip of fabric (1), which is comprised of bioabsorbable fibers and made by a knitting, weaving, non-woven or other technique. The fabric (1) is typically relatively narrow (e.g. 1 to 10 mm wide) and thin (e.g. 0.1 to 1.0 mm thick), depending on the intended application of the prosthetic device to be formed from the fabric (1). The joint spacer is made by wrapping said fabric (1) to yield a cylindrical body (2); and fixing the free end of the fabric (1) to the surface of the cylindrical body (2) so formed. The joint spacer can be implanted in conjunction with one or more fixation parts (14', 14'), to hold the joint spacer in place between the bones (15, 16) to be joined.
摘要:
A bone cap implant (10) of the type used to cover a remaining portion of a resected bone, such as metatarsal, metacarpal or phalangeal bones. The bone cap serves as an articulation surface for the proximal phalanx in the metatarsophalangeal, metacarpophalangeal or interphalangeal joints. A method of making the bone cap by forming an existent tubular sleeve (12) made of expanded PTFE integrally bonded to non-expanded PTFE (14) without the use of adhesives. A method of forming a structure onto an existent structure, such as one made of expanded PTFE, by sintering without the use of adhesives.