УСТРОЙСТВО ДЛЯ ВОССТАНОВЛЕНИЯ СУСТАВА ЧЕЛОВЕКА ИЛИ ЖИВОТНОГО

Группа изобретений относится к медицине, а именно к устройству для лечения сустава человека или животного, причем указанный сустав имеет две суставные поверхности, содержит два суставных элемента и временно устанавливаемый соединительный элемент. Два суставных элемента проявляют относительно друг друга по меньшей мере ограниченные суставные свойства и содержат средства крепления к одной из указанных суставных поверхностей посредством материала, имеющего термопластические свойства, и энергии колебаний. Материал, имеющий термопластические свойства, размещен на внешних сторонах каждого суставного элемента. Временно устанавливаемый соединительный элемент размещен с возможностью отсоединения между двумя указанными элементами или вокруг двух указанных суставных элементов и соединяет указанные два суставных элемента с образованием жесткого, не проявляющего суставные свойства единого элемента. Способ лечения сустава человека или животного по первому варианту, причем указанный сустав имеет две суставные ...

ЭНДОПРОТЕЗ ПРОКСИМАЛЬНОГО МЕЖФАЛАНГОВОГО СУСТАВА КИСТИ

Полезная модель относится к медицине, а именно к хирургии кисти, и может использоваться в замещении проксимальных межфаланговых суставов при их заболеваниях различной этиологии, в частности может применяться в травматологических, ортопедических стационарах для хирургического лечения пястно-фаланговых суставов путем их замещения. Техническим результатом создания полезной модели является улучшение функциональных результатов эндопротезирования проксимальных межфаланговых суставов путем создания эндопротеза с новыми конструктивными свойствами. Технический результат достигается тем, что эндопротез проксимального межфалангового сустава кисти выполнен из инертной керамики и имеет проксимальный компонент, состоящий из проксимальной суставной части и ножки, и дистальный компонент, состоящий из дистальной суставной части и ножки. Ножки эндопротеза имеют коническую форму, гладкую поверхность и скругления на верхушках. При этом суставные части эндопротеза приближены к естественной анатомии, а именно ...

ГИБКОЕ ХИРУРГИЧЕСКИ ИМПЛАНТИРУЕМОЕ УСТРОЙСТВО ИЗ СИЛИКОНА С ПОКРЫТИЕМ ДЛЯ СОЕДИНЕНИЯ ФАЛАНГ ПАЛЬЦЕВ, ПЯСТНО-ФАЛАНГОВЫХ ИЛИ ПЛЮСНЕВО-ФАЛАНГОВЫХ КОСТЕЙ В АРТРОПЛАСТИЧЕСКОЙ ХИРУРГИИ

... 1. Хирургически имплантируемое устройство (1; 10), представляющее собой единое целое, выполненное из инертного эластичного и гибкого материала, предпочтительно, силикона, для соединения фаланг пальцев, пястно-фаланговых или плюснево-фаланговых костей кисти или стопы в артропластической хирургии, в основном состоящее изувеличенной центральной части (2), сформированной утолщенной частью (5) с гладкой дорсальной поверхностью без вмятин или надрезов, с вогнутостью вверх или вниз, и имеющей поперечно проходящий канал (6), в центре которого сформировано углубление (7),двух продолговатых хвостовиков (3, 4), имеющих уменьшенное поперечное сечение и суживающиеся концы, и отходящих от увеличенной центральной части (2) в противоположных направлениях, при этом углубление (7) обеспечивает сближение двух продолговатых хвостовиков (3, 4) при сгибании устройства (1; 10), а увеличенная центральная часть (2) и (или) утолщенная часть (5) действует при этом сближении как шарнир,отличающееся тем, что оно покрыто ...

Prosthesis for joint between two bones - has fixing screw with self-tapping screw thread which centralises

The prostesis is for the joint between two bones. It consists of an anchoring part and a joint bearing surface. The anchoring part (1) is secured by means of a fixing screw (3). The fixing screw (3) is a self-tapping type of screw and the crest dia. of its screw thread is such that it cuts into the bone forming the wall of the bone cavity and in its final position its screw thread bites into the hard cortex of the bone. The screw (3) is thus self-centering and also centralises the anchoring part (1). USE/ADVANTAGE - Bone joint prosthesis with self-centering anchoring part.

DEVICE FOR USE IN THE TREATMENT OF DAMAGED ARTICULAR SURFACES OF HUMAN JOINTS

Prosthesis for finger joints comprises a rotatable disk which is insertable in a socket and is provided on is periphery with a hole for a displaceable extension section of the distal anchoring shaft

The prosthesis for finger joints comprises a rotatable disk (8) which is insertable in a fork-like socket (3) and is provided on is periphery with a hole for a longitudinally displaceable extension section (7) of the distal anchoring shaft (5).

IMPLANT WITH ATTACHMENT SURFACE

PROSTHETIC JOINT

... 1284466 Prosthetic joint CUTTER LABORATORIES Inc 24 Nov 1969 [27 Jan 1969] 57415/69 Heading A5R A prosthetic joint 20, comprises a unitary elastomeric member 10 having two tapering stems 11, 12 joined at their thicker ends to a central portion 13, which is also thickest at its ends 14, 15 and has a thin flexible web 16, transverse to the stems, which are covered by a mesh of threads and adapted to seat in the bones of the joint. The member 10 is made from silicone rubber and is reinforced by a double layer of a reinforced polyester mesh 23 through its horizontal central plane. The thick end sections 14, 15 have a flat shelf 21, 22 around stems 11, 12 respectively to prevent the movement of the prosthesis in the prepared drilled bone cavity. The joint 20 is designed to flex in one forward plane 'by a V-shaped portion 25, but only slightly in the reverse direction as the sides 27, 28 of a narrow notch 26 meet and prevent further rotation of the joint 20. Stitching 29 is used to secure the ...

Flexible finger implant

The invention provides a flexible finger implant 1 of unitary construction. Implant 1 has a first stem 2 to fit the bone canal of the metacarpal bone, and a second stem 4 substantially in line before flexion with the first stem 2 to fit the bone canal of the phalangeal bone. A hinge 6 is formed between an end of the first stem and an end of the second stem, and hinge 6 has a declining thickness in a direction substantially normal to the line of said first and second stem. In use of the implant 1, the hinge 6 allows rotation to the medial side during flexion of a finger. The implant may be formed from silicone.

Co-moulded single-piece prosthetic finger joint made from liquid silicone rubber and polyether ether ketone

An implantable prosthesis made from first and second materials which may be polyetheretherketone (PEEK) and a silicone rubber. The materials may be injection moulded into unitary finger joints and craniomaxillofacial implants (100, figure 12) in a co-moulding process. An exemplary finger joint has a body 20 made of silicone rubber which defines intramedullary shafts 12, 14 and a hinge portion 22. Regions 24, 26 of the body on opposing sides of hinge 22 are over-moulded with a protective reinforcing sleeve of PEEK. The co-moulding process may utilize heat from the first injected material to cure the second injected material.

Systems for bone replacement

Modular proximal interphalangeal joint

Interphalangeal joint implant

A modular proximal interphalangeal joint implant assembly including a first stem component 16, a second stem component 12, and an articulation assembly 14,18. The first stem component 16 includes a first locking device 24' and is implantable in a proximal phalanx bone. The second stem component includes a second locking device 24 and is implantable in a middle phalanx bone. The articulation assembly 14,18 includes a first articulation component 14 removably attachable to the first locking device and a second articulation component 18 removably attachable to the second locking device. The articulation assembly 14,18 can include be semi-constrained with articulated surfaces 40,60 or constrained with a hinge.

Prosthetic finger joint

PROSTHETIC BONE JOINT DEVICES

PROSTHETIC JOINT

Prosthetic joint

A prosthetic joint is comprised of three basic components. A first component is adapted to be associated with a first bone and has an arcuate bearing surface at one end thereof. The first component is constructed such that it may pivot on its bearing surface. A second component is adapted to be associated with a second bone adjacent to the first bone. The second component has a terminal portion at one end facing toward the bearing surface of the first component and has rigid walls defining an open-ended socket. The walls of the second component are connected to the first component in a manner to allow pivoting of the first component with respect to the second component. A third component has an arcuate bearing surface mating with the arcuate bearing surface on the first component. The third component is located in the open-ended socket with its walls embracing the same so that the mating bearing surfaces cooperate to carry the loading forces of the joint in use.

JOINT PROSTHISIS

SCREW-EMBODIED JOINT PROSTHESIS

OPEN-POROUS METALLIZATION FOR JOINT SPARE IMPLANTS AS WELL AS PROCEDURES FOR THE PRODUCTION

ALS SCHARNIER AUSGEBILDETES FINGERGRUNDGELENK-IMPLANTAT

KOCHER ZUR AUFNAHME DES SCHAFTES EINES KNOCHENIMPLANTATES

INSTRUMENTS FOR THE EXECUTION OF AN OPERATIONAL INTERFERENCE AT A JOINT

SCHUTZVORRICHTUNG FUER EINE CHIRURGISCH IMPLANTIERBARE PROTHESE ZUM ERSATZ VON KNOCHENGELENKEN U.DGL.

DIGESTER FOR THE ADMISSION OF THE SHANK OF A BONE IMPLANT

SAFETY DIVICE FOR A FLEXIBLE ONE, OPERATIONAL IMPLANTIERBARE PROSTHESIS

PROTHETI JOINT

BODY-JOINT-REPLACING TITANIUM IMPLANT WITH ONE OR MORE BASES

DEVICE FOR IMPLANTATION INTO HUMAN OR ANIMAL FABRIC

DEVICE FOR THE TREATMENT OF DAMAGED SURFACES OF HUMAN JOINTS.

GELENKPROTHESE

BENDING MEMBER PROSTHESIS.

JOINT PROSTHESIS FOR SMALL JOINTS

ANCHORAGE ELEMENT FOR HOLDING JOINT PROSTHESES FOR A RESTORED JOINT

IMPLANT DEVICE FOR REPLACING THE KARPOMETAKARPALGELENKES HUMAN THUMB

AS HINGE TRAINING FINGER BASIC JOINT IMPLANT

KARPOMETAKARPAL GELENKSPROTHESE ONE

PROSTHESIS FOR THE METACARPAL PHALANGEAL AND INTERPHALANGEALEN OF JOINTS IN HAND AND FOOT

ARTIFICIAL FINGER JOINT

Bone joint implants

A bone joint implant (1) has a proximal part (120) for translational motion over the trapezium in a first carpometacarpal joint and a distal part (110) for intramedullary engagement in the first metacarpal bone. An articulating coupling (103, 121, 123) is for multi-axial motion with translational movement over a bone in one part (120) and rotation in the other part (110) about the articulating coupling (121, 103). A flange (105) extends radially and around the coupling to limit relative rotational motion of the proximal and distal parts about the coupling, and to provide resilience for contact between the proximal and distal parts. The flange has a contoured surface (101) matching an abutting surface (125) of the proximal part (122) upon articulation of the parts in use to extreme positions. The flange (105) is included in an insert (100) in a stem (111) of the distal part (110), the flange extending proximally of the stem (111) and prohibiting contact between the proximal part (120) and ...

Toe joint prosthesis and manufacturing method therefor

A toe joint prosthesis (100) and a manufacturing method therefor. The toe joint prosthesis (100) comprises: a first medullary nail prosthesis (1) and a second medullary nail prosthesis (2) articulated with the first medullary nail prosthesis (1). The first medullary nail prosthesis (1) comprises a first medullary nail (11) arranged in a medullary cavity, and a second medullary nail (12), connected to the first medullary nail (11), and located outside the medullary cavity. The second medullary nail (12) is articulated with the second medullary nail prosthesis (2). A three-dimensional porous structure layer (5) is formed on the outer surface of the first medullary nail (11) and/or the second medullary nail (12) and/or the second medullary nail prosthesis (2), so as to allow better bone infiltration ability and bone crawling ability on the outer surface of the toe joint prosthesis, such that the fixation of the toe joint prosthesis is more stable.

Interpositional biarticular disk implant

Prosthesis for small joints

Applications of diffusion hardening techniques

... - 33 A device, for example a medical implant, and a method of making the same, the device having a metal or metal alloy substrate, for example CoCr, and a diffusion hardened metallic surface, for example a plasma carburized surface, contacting a non-diffusion hardened surface or a diffusion hardened surface having a diffusion hardening species different from that of the opposing surface. ................. *. 0 L) 0 U~ O 0 Lol 0 cr) M~ (% (uoJ10xw) asom imuirf ...

Resorptive intramedullary implant between two bones or two bone fragments

The anatomic replacement prosthesis system in the hand and wrist

Arthroplasty joint assembly

Anatomically neutral joint

Anchoring element supporting prostheses or a joint mechanism for a reconstructed joint

MULTIPART COMPONENT FOR AN ORTHOPAEDIC IMPLANT

The present invention provides an implant for replacing an articulating bone end adjacent a skeletal joint. The implant includes individual subcomponents having different physical and/or mechanical properties joined together into a multipart implant component.

FLEXIBLE DAMPENING INTERVERTEBRAL SPACER DEVICE

A flexible dampening intervertebral spacer (100) to replace a spinal disc comprising upper and lower plates (101,103), an articulation element (102) and optional intermediate members (804,805). The articulation element has a plurality of interposed, concentric ring shaped segments (202) separated by one or more spaces (201) and one or more bridging elements (203) connecting the interposed segments. A first portion of the articulation element, preferably an innermost segment, is preferably fixedly connected to the upper plate while a second portion of the articulation element, preferably the outermost segment, is preferably connected to the lower plate to permit relative movement of the endplates by elastic deflection or flexing of the articulation element without opposed surfaces rubbing against each other.

PROSTHETIC JOINT

PROSTHETIC JOINT A prosthetic joint for replacement of bone joints having a one-piece body of flexible physiologically inert material. The body has an enlarged central portion with two stem portions extending oppositely from the central portion for insertion into the medullary canal of bone. The central portion of the body has a height equal to or greater than its width and a slot extending substantially through the enlarged central portion from the distal end of the dorsal surface of the central portion toward the proximal end of the volar surface of the central portion forming a hinge at the volar surface. The hinge is offset from the center of said central portion toward the proximal end of the central portion.

PROTECTIVE MEMBER FOR IMPLANTABLE PROSTHESIS AND METHOD OF PROTECTING THE PROSTHESIS

IMPLANT FOR USE IN A WEAR COUPLE INCLUDING A SPHERICAL WEAR PARTNER

The invention describes an implant for wear couples in endoprosthetics, the implant having an outer side, with an outer face, and an inner side, and a hemispherical wear region for accommodating a spherical wear partner being formed on the inner side. The aim of the invention is to reduce the height of the implant as much as possible and to ensure that, e.g., the pelvic bone does not have to be milled down as much. According to the invention, the implant is therefore designed in the form of a ring or annular structure and the outer face permits direct implantation in the body. In order to reduce friction between the spherical wear partner and the implant to a minimum, the implant has a specially designed inner geometry.

FIXED BEARING JOINT ENDOPROSTHESIS WITH COMBINED CONGRUENT- INCONGRUENT PROSTHETIC ARTICULATIONS

An orthopedic joint replacement has first and second joint components that can be placed in load-bearing articulation with one another. The first joint component has first and second convex spherical condylar segments defining first and second radii. The second joint component has a spherical first concave condylar segment with a radius equal to the radius of the first convex spherical condylar segment. The second joint component also has a non-spherical second concave condylar segment. The first convex spherical condylar segment of the first joint component is in congruent contact with the first spherical concave condylar segment of the second joint component. The second spherical convex condylar segment of the first joint component is in line contact with the non--spherical concave condylar segment of the second joint component.

BALL AND SOCKET IMPLANTS FOR CORRECTION OF HAMMER TOES AND CLAW TOES

A toe bone implant for correction of toe bone deformities is provided. The toe bone implant includes a first portion having a socket portion. The toe bone implant also includes a second portion having a ball portion operatively connected to the socket portion. The toe bone implant is implanted in a joint such that the ball portion is configured to rotate a predetermined amount respective to the socket portion.

ARTICULAR FINGER PROSTHESIS WITH SHIELD

The invention relates to an articular finger prosthesis - especially metacarpophalangeal or proximal interphalangeal - comprising a proximal implant (5a, 5b) associated with a proximal bone element (1) or (2) and forming a convex articulation surface (7a, 7b) and a distal implant (6a, 6b) associated with a distal bone element (2) or (3) forming a concave articulation surface (8a, 8b) which slides in contact with the convex articulation surface (7a, 7b), wherein each implant comprises a shield (9a, 9b, 11a, 11b), the shape and dimensions of which correspond at least substantially to those of the original cartilage which replaces it, while covering the end (17, 18, 19, 20) of the bone element (1, 2, 3) on or in which it is combined by fitting while retaining the end portions of the bone element (1, 2, 3) for anchoring the ligaments (13a, 13b) and/or the tendons (14a, 14b).

JOINT PROSTHESIS

A joint prosthesis is disclosed. The joint prosthesis is preferably used for small joints, such as finger joints, and comprises at least one distal prosthesis element and at least one proximal prosthesis element. A joint is arranged between the distal and proximal prosthesis elements to allow for articulated movement therebetween. The distal and proximal prosthesis elements are secured to corresponding distal and proximal bone shafts.

JOINT PROSTHESIS

The invention relates to a joint prosthesis intended to be mounted between t wo bones to be joined together. The joint prosthesis comprises a spacer part (1 , 6, 11, 16, 23, 29, 33), intended to be placed between the joint surfaces of the bones to be joined. The spacer part is manufactured of biodegradable polymer, co-polymer, polymer mixture and/or composite. The spacer part is, a t least under tissue conditions, porous and elastic. The joint prosthesis further comprises fixation parts (2, 3; 7, 8; 13a, b, c, 12; 17, 18; 24, 25; 30; 34, 35) which are arranged to fix the spacer part (1, 6, 11, 16, 23, 29, 33) to the bones to be joined, and which are manufactured of biodegradable material.

Dispositif prothétique

Fingergelenkprothese

Endoprosthetic hinge joint

JOINT PROSTHESIS.

JOINT IMPLANT.

Artificial joint

The joint for implantation in the body of a living being comprises two parts (A, B) which are held together by magnetic attraction (110), the magnetic force lines extending essentially perpendicular to the direction of movement of the two parts. ...

Elbow joint prosthesis - has head parts of prosthesis anchored in bone cavities by perforated tubes

An internal prosthesis for a joint, particularly an elbow joint, is intended to be implanted in the bone cavities. The prosthesis consists of a first part, with a convex head (607) which is implanted in the humerus and a second part with a concave head (615) which is implanted in the ulna. Both parts are implanted in their bones by perforated tubular anchoring members (617). These two anchoring members are of similar form and are preferably identical. USE/ADVANTAGE - The perforated tubes provide firm joints for the implants in the humerus and ulna.

CEMENT-FREELY IMPLANTIERBARE SMALL JOINT PROSTHESIS.

Artificial joint.

Orthopedic bone implant.

Thumb saddle joint implant

Die Erfindung betrifft ein Daumensattelgelenk-Implantat (10), umfassend ein distales Gelenkelement (11) mit einer ersten Knochenverbindungsoberfläche (12), ein proximales Gelenkelement (15) mit einer zweiten Knochenverbindungsoberfläche (16) und ein zwischen dem ersten distalen Gelenkelement (11) und dem zweiten proximalen Gelenkelement (15) angeordnetes Zwischenelement (20), wobei das zweite proximale Gelenkelement (15) und das Zwischenelement (20) jeweils eine Gleitfläche (21; 22) aufweisen, die jeweils sattelförmig ausgebildet sind und aufeinander verschiebbar sind, und das Zwischenelement (20) eine von der Gleitfläche (22) abgewandte Kontaktfläche (23) aufweist, die an einer Kontaktfläche (13) des ersten distalen Gelenkelements (11) anliegt, wobei eine Rotationsbewegung des Zwischenelements (20) um eine Zentralachse (A) des Vorsprungs (42) vom Führungsmittel (40) durch eine Verdrehsicherung (30) begrenzt ist.

thumb saddle joint -Implant

Die Erfindung betrifft ein Daumensattelgelenk-Implantat (10), umfassend ein distales Gelenkelement (11) mit einer ersten Knochenverbindungsoberfläche (12), ein proximales Gelenkelement (15) mit einer zweiten Knochenverbindungsoberfläche (16) und ein zwischen dem ersten distalen Gelenkelement (11) und dem zweiten proximalen Gelenkelement (15) angeordnetes Zwischenelement (20), wobei das proximale Gelenkelement (15) und das Zwischenelement (20) jeweils eine Gleitfläche (21; 22) aufweisen, die jeweils sattelförmig ausgebildet sind und aufeinander verschiebbar sind, und das Zwischenelement (20) eine von der Gleitfläche (22) abgewandte Kontaktfläche (23) aufweist, die an einer Kontaktfläche (13) des ersten distalen Gelenkelements (11) anliegt, wobei eine Rotationsbewegung des Zwischenelements (20) um eine Zentralachse (A) durch eine Verdrehsicherung (30) begrenzt ist.

Artificial joint

An artificial joint comprising a first base element (40) and a second base element (50) that are pivotally connected to an intermediate body (30). A first protrusion (41) extends from the first base element (40) and is configured to be press-fitted into a screw device (60) that is anchored to a first bone member (6), and a second protrusion (51 ) extends from the second base element (50) and is configured to be press-fitted into a screw device (70) that is anchored to a second bone member (7). A related kit-of-parts (2) is also described.

Metal implant coated under reduced oxygen concentration with osteoinductive protein

SURGICALLY IMPLANTABLE PROSTHETIC JOINTS

TOGETHER PROSTHETIC MODULAR FOR ARTICULATIONS Of OS COURTS OF the HAND OR the FOOT

INTERPHALANGEAL AND/OR METACARPOPHALANGEAL PROSTHESIS

Joint prosthesis.

JOINT PROSTHESIS

Prothèse articulaire phalangienne.

La prothèse comporte trois parties, deux portions de tige (1, 2), vissées dans les deux diaphyses des deux os à articuler, et un élément intermédiaire (3) d'articulation des deux portions de tige (1, 2). L'élément d'articulation (3) est fixé aux portions de tige (1, 2) à la manière de tenons et de mortaises, par des manchons d'expansion (7') en "alliage métallique mémoire". L'élément intermédiaire (3) est immobilisé en translation par rapport aux diaphyses ainsi réunies. La prothèse de l'invention est appropriée pour remplacer des articulations de la main et du pied implantées dans des zones de tendons.

PROSTHESIS Of ARTICULATION

PROSTHESIS Of ARTICULATION FOR SMALL OS, IN PARTICULAR PROSTHESIS TRAPEZO-METACARPIENNE OR INTER-PHALANGIENNE AND UNIT FORMS BY THE AFOREMENTIONED PROSTHESIS AND INSTRUMENTS Of EXTRACTION OF THE AFORESAID the PROSTHESIS

PROSTHESIS Of IN PARTICULAR DIGITAL ARTICULATION

PROSTHESIS OF PHALANGEAL HEAD

TOTAL PROSTHESIS FOR PHALANGEAL ARTICULATION

... - Prothèse articulaire - La prothèse totale pour articulation phalangienne, du type comprenant deux pièces formant chacune une queue d'engagement et d'immobilisation dans le canal médullaire de l'os correspondant constitutif de l'articulation et, à l'opposé de cette queue une partie de coopération avec celle de la seconde pièce est caractérisée en ce que les parties de coopération (14,24) sont dépourvues de moyens de liaison structurelle entre elles et sont constituées - pour l'une par une tête métallique offrant, à l'opposé de la queue, au moins une surface (15) convexe de contact et de glissement, - pour l'autre, par un siège (25) de contact et de glissement présenté par un plateau métallique (24) et offrant une surface congruente à la surface convexe de la pièce distale. - Application aux prothèses articulaires phalangiennes de la main.

Endoprosthetic bone joint

Prosthesis for replacing articulation between metacarpal bone and carpal trapezius bone of patient's hand, has oblong body whose central cores are made of flexible material with rigidity higher than that another material of body

La présente invention concerne les prothèses pour le remplacement d'une articulation de la main entre un os métacarpien 1 et un os carpien 2. La prothèse est essentiellement caractérisée par le fait qu'elle est constituée d'un bloc 10 en une seule pièce comportant un corps oblong 11 d'axe 12, une patte d'ancrage 14 d'axe 16 solidaire du corps 11 sensiblement en son milieu et de façon que les axes 12, 16 soient perpendiculaires entre eux, un corps oblong 21 d'axe 22, une patte d'ancrage 24 d'axe 26 solidaire du corps 21 en son milieu et de façon que les axes 22, 26 soient perpendiculaires entre eux, des moyens de liaison 30 en forme de tétraèdre sensiblement régulier reliant entre eux les corps 11, 21 en étant agencés de façon que, dans une position de repos du bloc 10, les axes 12, 22 soient orthogonaux, au moins l'un des deux éléments suivants, les corps 11, 21 comporte une âme centrale 42, 43, réalisée en un second matériau ayant une rigidité supérieure à celle du premier matériau. Application ...

PROSTHESIS Of ARTICULATION, IN PARTICULAR Of ARTICULATION METACARPO-PHALANGIENNE

Trapezo-metacarpal joint prosthesis

La prothèse pour l'articulation trapézo-métacarpienne, comprenant un élément (1) apte à être implanté dans le premier métacarpien et un élément (2) apte à être implanté dans le trapèze, est remarquable en ce que l'un des éléments (1) ou (2) reçoit avec capacité d'orientation et d'indexation angulaire, une tête d'articulation sphérique (3) apte à coopérer avec une cavité complémentaire d'un insert (4) que présente l'autre élément (2) ou (1).

Inserts for holding bone implants - fixed mechanically without the use of cement by expanding conical element

Trapezo-metacarpal prosthesis has component substituting for trapezoid bone connected to metacarpal component by articulated joint

La présente invention est relative à une prothèse trapézo-métacarpienne, comprenant un premier élément (2) destiné à être inséré dans le métacarpe de la main d'un patient. Elle comprend un élément (24) substitutif du trapèze de la main, apte à être relié au premier élément par un élément d'articulation (20) relié solidairement au premier élément et, en pivotant, à l'élément substitutif du trapèze.

ARTICULAR IMPLANT Of INTERPOSITION METATARSO-PHALANGIEN OR METACARPO-PHALANGIEN

L'implant (1) comporte un corps (2) qui présente, à l'opposé l'une de l'autre suivant un axe proximo-distal (Z-Z), des faces proximale (4) et distale (6) destinées à être tournées respectivement soit vers le métatarsien (M) et vers la phalange (P) d'une articulation métatarso-phalangienne, soit vers le métacarpien et vers la phalange d'une articulation métacarpo-phalangienne. Le corps délimite, sur sa face proximale, une surface concave (41) d'articulation avec le métatarsien ou le métacarpien. Afin de rendre plus stable en position cet implant, tout en respectant au mieux l'anatomie de l'articulation, le corps délimite, sur sa face distale, une surface (62) de coopération dynamique avec la phalange, qui s'étend tout autour de l'axe proximo-distal, qui présente, en coupe perpendiculaire à l'axe proximo-distal, un contour fermé continûment incurvé, et qui présente, en coupe axiale, un profil concave.

Proximal metacarpophalangeal or interphalangeal joint prosthesis for use in e.g. proximal bone, has pivoting stem whose end has sphere shaped central portion around hole, where portion has thickness less than distance separating side faces

Cette prothèse comprend un premier élément (2) pourvu d'une tige pivotante (6) apte à se déplacer dans une cavité (7) délimitée par deux faces latérales en vis-à-vis. Selon l'invention, - le trou de ladite première extrémité (6a) de la tige (6) présente un diamètre nettement plus important que le diamètre de la broche (8), de sorte qu'il existe un jeu annulaire entre cette broche (8) et la paroi de la tige (6) délimitant ce trou ; - ledit premier élément (2) présente, au niveau des trous qu'il comprend pour recevoir la broche (8), et sur lesdites faces latérales délimitant la cavité (7), deux évidements (9) en forme de calotte sphérique, coaxiaux à ces trous, situés tous les deux dans une même sphère géométrique ; et - ladite première extrémité (6a) de la tige (6) présente, autour du trou que comprend cette première extrémité (6a), une forme en portion centrale de sphère, ayant diamètre légèrement inférieur à celui de ladite sphère géométrique et ayant une épaisseur inférieure à la distance ...

Carpometacarpal (cmc) joint arthroplasty implants and related jigs and methods

Thumb carpometacarpal (CMC) joint implants include a trapezium implant defining an articulating surface and a cooperating first metacarpal implant with a base portion of the first metacarpal defining an articulating surface. The first metacarpal base articulating-surface is configured to articulate against the trapezium implant articulating surface.

Orthopedic implants having gradient polymer alloys

Orthopedic implants having a bone interface member and a water swellable IPN or semi-IPN with a stiffness, hydration, and/or compositional gradient from one side to the other and physically attached to the bone interface member. The invention also includes an orthopedic implant system including an implant that may conform to a bone surface and a joint capsule. The invention also includes orthopedic implants with water swellable IPN or semi-IPNs including a hydrophobic thermoset or thermoplastic polymer first network and an ionic polymer second network, joint capsules, labral components, and bone interface members. The invention also includes a method of inserting an orthopedic implant having a metal portion and a flexible polymer portion into a joint, including inserting the implant in a joint in a first shape and changing the implant from a first shape to a second shape to conform to a shape of a bone.

Inflatable multi-chambered devices and methods of treatment using the same

Inflatable multi-chambered devices are provided for repairing or replacing spinal discs and distracting neighboring vertebral elements. Also included are cushioning devices that may be used in a joint replacement device cushioning system. Further included are kits and systems that include such devices, methods for making such devices, and methods of treating patients in need of such devices. Examples further include cosmetic augmentation and restoration devices.

Arthrodesis implant

The invention relates to an implant ( 1 ) for osseous fusion between two bones, including a first portion ( 20 ) having a longitudinal axis A, for being inserted in the first bone and including a first means ( 24 ) for attaching said implant in said first bone, and a second portion ( 30 ) having a longitudinal axis B, for being inserted in the second bone and including a second means ( 34 ) for attaching said implant in said second bone, said first and second portions ( 20, 30 ) being connected by a central core ( 40 ), said central core being a solid body, the cross-section of which, in a plane perpendicular to said longitudinal axis A, has the shape of a star having at least three points ( 41, 42, 43 ), said first portion having three tabs ( 21, 22, 23 ), each tab extending along said longitudinal axis A from the free end ( 41 a, 42 a, 43 a ) of one of the points of said central core.

Antibiotic delivery system and method for treating an infected synovial joint during re-implantation of an orthopedic prosthesis

An antibiotic delivery system including an intramedullary stem that is adapted to be removably mounted into a medullary canal of a bone. The stem includes a body having an inlet adapted to be in fluid communication with a source of liquid-borne antibiotic and a plurality of outlets disposed along the stem. A channel extends between the inlet and the plurality of outlets for delivering a fluid-borne antibiotic from the inlet to the plurality of outlets so as to distribute the antibiotic along the medullary canal in a controlled fashion. A method of treating an infected joint during a two-stage re-implantation of an orthopedic implant is also disclosed.

ARTIFICIAL JOINT

An artificial joint comprising a first base element and a second base element that are pivotally connected to an intermediate body. A first protrusion extends from the first base element and is configured to be press-fitted into a screw device that is anchored to a first bone member, and a second protrusion extends from the second base element and is configured to be press-fitted into a screw device that is anchored to a second bone member. A related kit-of-parts is also described. 1. An artificial joint comprising:a first base element and a second base element that are pivotally connected to an intermediate body;a first protrusion extending from the first base element and configured to be press-fitted into a first screw device that is anchored to a first bone member; anda second protrusion extending from the second base element and configured to be press-fitted into a second screw device that is anchored to a second bone member, wherein each protrusion comprises protuberances for increasing a grip between the respective protrusion and screw device.2. An artificial joint according to claim 1 , wherein the protuberances are elongated.3. An artificial joint according to claim 1 , wherein the first protrusion and the protuberances of the first protrusion extend in a common direction claim 1 , and the second protrusion and the protuberances of the second protrusion extend in a common direction.4. An artificial joint according to claim 1 , wherein the protuberances are configured to receive an adhesive for allowing the protrusions to adhere to the screw devices when press-fitted therein.5. An artificial joint according to claim 1 , wherein the protuberances have the form of knurls.6. An artificial joint according to claim 1 , wherein the protuberances comprise at least six protuberances on each protrusion.7. An artificial joint according to claim 1 , wherein the protuberances are spaced apart along a circumference of the respective protrusion.8. An artificial joint ...

EXPANDABLE JOINT IMPLANT

An expandable implantable device sized for occupying space in a cavity formed between small bones in a human hand or foot. Comprising a first smooth surface on which a first small bone may slide. May include an opening extending through the device for promoting fibrotic development through the opening from a direction from both thumb metacarpal and trapezium. An inflation cannula and/or needle may be attached to inflation port and inflation valve for introducing expansion fluid into the device. In some embodiments, an implant is inserted in a deflated mode and positioned so that a thumb metacarpal abuts distal side of the device when expanded, and trapezium abuts a proximal side thereof. At least one of distal side and proximal side include a smooth surface for allowing relative movement of thumb metacarpal or/and trapezium with respect to the device. 1. A method for implanting between small bones in a human hand comprising:forming a cavity between at least two of the small bones in the hand by cutting a portion of at least one of thumb metacarpal and trapezium;inserting into said cavity an expandable implantable device comprising a first smooth surface on which a first small bone may slide; andexpanding said device to occupy a space between said at least two small bones, such that said device acts as a cushion between said at least two small bones, to permit full range of thumb motion and to prevent thumb shortening.2. The method of claim 1 , wherein said forming comprises removing bone tissue from part of said at least two small bones.3. The method of claim 1 , wherein said inserting is facilitated through a small perforation in articular capsule in the hand claim 1 , such that said device when expanded is secured within said cavity without dislodging through said perforation.4. The method of claim 1 , comprising inserting said device in a deflated mode and positioning said device so that when expanded said thumb metacarpal abuts distal side of said device and ...

TRAPEZIUM IMPLANT FOR THUMB AND METHOD

An implant for the trapezium of the thumb carpometacarpal (CMC) joint comprising an integral elastomeric member configured to include a body portion having a tapered neck, having extending from one end thereof an elongated, longitudinally extending tapered portion adapted to be embedded into a reamed out-channel in the thumb metacarpal bone. After implantation, in the preferred embodiment of the method according to the invention, a segment of a nearby tendon, for example, the APL or FCR tendons, may be wrapped around the tapered neck of the implant to secure it in position, thereby forming a reinforced structure to inhibit dislocation of the prosthesis. However, in other methods, various other securing elements, including, but not limited to acellular matrices, may be used to retain the implant in position. 1. A method of reconstructing a carpometacarpal (CMC) joint of a thumb of a hand , comprising:a) implanting an implant having an elongated tapered portion and a tapered neck into the CMC joint;b) stripping away a portion of a tendon to leave a distal attachment intact adjacent to the implant;c) wrapping the tendon around the tapered neck of the implant to a point intersecting a remaining tendon at a palm side of the hand; andd) suturing the tendon to the remaining tendon.2. The method of claim 1 , wherein step b) includes stripping away a portion of a flexor carpi radialis (FCR) tendon.3. The method of claim 1 , wherein step b) includes stripping away a portion of an abductor pollicis longus (APL) tendon.4. The method of claim 1 , wherein the elongated tapered portion is inserted into a cavity formed in a metacarpal until an end face of an internal bulge of the implant circumferentially contacts a cortex of the metacarpal.5. The method of claim 4 , wherein the tapered neck is disposed between the internal bulge and an articulation bulge of the implant.6. The method of claim 5 , wherein the tapered neck has a cross-sectional area that is less than a cross- ...

HYDROGEL ARTHROPLASTY DEVICE

An arthroplasty device is provided having an interpenetrating polymer network (IPN) hydrogel that is strain-hardened by swelling and adapted to be held in place in a joint by conforming to a bone geometry. The strain-hardened IPN hydrogel is based on two different networks: (1) a non-silicone network of preformed hydrophilic non-ionic telechelic macromonomers chemically cross-linked by polymerization of its end-groups, and (2) a non-silicone network of ionizable monomers. The second network was polymerized and chemically cross-linked in the presence of the first network and has formed physical cross-links with the first network. Within the IPN, the degree of chemical cross-linking in the second network is less than in the first network. An aqueous salt solution (neutral pH) is used to ionize and swell the second network. The swelling of the second network is constrained by the first network resulting in an increase in effective physical cross-links within the IPN. 1. (canceled)2. An orthopedic implant comprising a hydrogel and having a first surface and a second surface , the hydrogel having an equilibrium water content of at least 15% and a modulus of at least about 1 MPa , and the first surface having a coefficient of friction in aqueous solution of less than 0.2.3. The orthopedic implant of claim 2 , wherein the orthopedic implant is at least 1 mm in thickness.4. The orthopedic implant of claim 2 , wherein the first and second surfaces are different.5. The orthopedic implant of claim 2 , wherein the implant is configured for cartilage replacement in a joint.6. The orthopedic implant of claim 5 , wherein the joint is selected from a hip claim 5 , a shoulder claim 5 , a knee claim 5 , an elbow claim 5 , a finger claim 5 , a joint of the hand and a joint of the foot.7. The orthopedic implant of claim 2 , wherein the implant is a cartilage replacement implant and wherein the first surface is a bearing surface that is adapted to articulate with an additional bearing ...

Arthroplasty Implants

Arthroplasty implants replace an articulating surface of a bone joint such as bone joints of the foot, and is characterized by a three-component device comprising a bone screw, a button, and a cap. The button incorporates knurling on its distal end to fixate onto bone, a center hole, a spherical pocket to mate with the bone screw for stabilization, and a proximal retention structure to mate with the cap. The bone screw incorporates distal bone (cortical) threads or threading, a spherical head, and a drive structure used to insert the bone screw through the hole of the button and into the bone (e.g. a distal segment of the first metatarsal). The cap incorporates a distal mating structure that retains the cap onto the button, a proximal smooth spherical head that mates with the distal surface of the bone (e.g. a phalange bone), and a tang that prevents rotation after implantation. 1. (canceled)2. (canceled)3. (canceled)4. An implant for replacing an articulating surface of a bone joint , the implant comprising:a bone screw having a head with a top and a rounded underside, a shaft extending from the rounded underside of the head, bone threading on an outside surface of the shaft, and a drive structure in the top of the head configured to receive a drive tool for inserting the bone screw into bone of the bone joint;a button having a distal end configured to be received on bone of the bone joint and having an undersurface with knurling to fixate into the bone of the bone joint, a pocket extending from the distal end and having a bore configured to allow the shaft of the bone screw to pass through but retain the underside of the head of the bone screw, and a rim extending about a proximal end of the button, the rim incorporating a retention structure configured to receive a mating retention structure of the implant; anda cap having a proximal surface configured to articulate with a bone joint, and a distal end having a distal retention structure configured to mate with ...

FUSION IMPLANT

Implants, instruments, and methods are presented for fixing adjacent bone portions to promote fusion of the bone portions. 1. A fusion implant for joining first and second bones of the digits of a human hand or foot , the implant comprising:a first component having a body with a first end insertable into a the first bone, a second end, and an intermediate portion between the first and second ends, at least the intermediate portion comprising a plastic material; anda second component having a first end insertable into the second bone and a second end, the second end including a socket operable to receive the second end of the first component in angularly constrained and press fit axial sliding relationship.2. The fusion implant of wherein the intermediate portion is severable to separate the first and second components.3. The fusion implant of wherein the socket receives the second end of the first component in press fit bi-directional sliding relationship.4. The fusion implant of wherein the first component is of a unitary polymer construction.5. The fusion implant of wherein the second component is of a unitary polymer construction.6. The fusion implant of wherein the first and second components are formed by molding.7. The fusion implant of wherein at least one of the first and second components includes at least one outwardly projecting anti-rotation member operable to engage bone surrounding the other component in torque transmitting relationship to resist rotation of the bone surrounding the other component relative to the anti-rotation member.8. A fusion implant for joining first and second bones of the digits of a human hand or foot claim 1 , the implant comprising:a first component having a first end insertable into the first bone and a second end, the second end including a plurality of axially spaced, radially projecting members; anda second component having a first end insertable into the second bone and a second end, the second end including a socket ...

Flexible surgically implantable device, made of coated silicone, for joining phalanxes, metacarpus-phalanx or metatarsus-phalanx bones in arthroplasty surgery

A surgically implantable device ( 1,10 ) made of a single piece of silicone, for joining phalanxes, metacarpus-phalanx or metatarsus-phalanx bones of the hand or foot in arthroplasty surgery, includes 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 the enlarged central portion ( 2 ), one opposed to the other. The 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).

Ionic polymer compositions

The present disclosure pertains to ionic polymer compositions, including semi- and fully interpenetrating polymer networks, methods of making such ionic polymer compositions, articles made from such ionic polymer compositions, and methods of making such articles and packaging for such articles.

PROXIMAL INTERPHALANGEAL JOINT PROTHESIS

An interphalangeal prosthesis () includes a mobile element (), a proximal fixation element (), and a distal fixation element (). The mobile element () includes a proximal portion (42, 62, 94) and a distal portion (), and the proximal portion includes three proximal mobile coupling contiguous surfaces () and a proximal mobile coupling protrusion (), and the distal portion includes a distal coupling mobile surface () and a distal mobile coupling protrusion (), and the proximal portion and the distal portion move relative to each other primarily in an axis of rotation perpendicular to a plane that extends through the proximal mobile coupling protrusion, the three proximal mobile coupling contiguous surfaces, the distal coupling mobile surface, and the distal mobile coupling protrusion in an implanted configuration. The proximal fixation element () couples to the three proximal mobile coupling contiguous surfaces and the proximal mobile coupling protrusion of proximal portion, and couples to a joint bone surface and a bone canal. The distal fixation element () couples to the distal coupling mobile surface and the distal mobile coupling protrusion, and couples to an opposing joint bone surface and a second bone canal. 1. An interphalangeal prosthesis , comprising:a mobile element which includes a proximal portion and a distal portion, and the proximal portion includes three proximal mobile coupling contiguous surfaces and a proximal mobile coupling protrusion, and the distal portion includes a distal coupling mobile surface and a distal mobile coupling protrusion, and the proximal portion and the distal portion are configured to move relative to each other primarily in an axis of rotation perpendicular to a plane that extends through the proximal mobile coupling protrusion, the three proximal mobile coupling contiguous surfaces, distal coupling mobile surface, and the distal mobile coupling protrusion in an implanted configuration;a proximal fixation element which ...

Metacarpal-phalangeal prosthesis

A surgically implantable metacarpal-phalangeal prosthetic replacement device having engaging male and female components. The male and female components each include a conically shaped shank adapted to be inserted into a medullary canal of a bone. The male head portion connected to the first conically shaped shank includes two spaced-apart lateral condyles having convex condylar surfaces and an intercondylar portion juxtaposed between the first and second convex condyles. The intercondylar portion extends outwardly relative to the convex condylar surfaces. The female component has a female head portion connected to the second conically shaped shank. The female head portion includes spaced-apart lateral side portions having concave recessed load-bearing surfaces that are complementary to and moveably engage the convex condylar surfaces of the male component. The lateral sides portions further define an intermediate concave condylar recess that moveably engages the outwardly extending intercondylar portion. The female head portion further includes dorsally positioned and substantially longitudinally aligned first and second protuberances which define a median channel portion for reception of the extensor tendons. 1. A surgically implantable metacarpal-phalangeal prosthetic replacement device comprising: i. a first conically shaped shank adapted to be inserted into a medullary canal of a bone; and', 'ii. a male head portion connected to said first conically shaped shank, said male head portion having two spaced-apart lateral condyles with convex condylar surfaces having a circular arc of greater than 180° around a center of curvature, and an intercondylar portion positioned between said spaced-apart lateral condyles extending outwardly relative to the convex condylar surfaces of the juxtaposed condyles; and, 'a. a male component comprising iii. a second conically shaped shank adapted to be inserted into a medullary canal of a bone; and', 'iv, a female head portion ...

Device to be implanted in human or animal tissue and method for implanting and assembling the device

An implant or endoprosthesis suitable to be implanted in human or animal tissue includes two (or more than two) parts to be joined in situ. Each one of the parts includes a joining location, the two joining locations facing each other when the device parts are positioned for being joined together, wherein one of the joining locations includes a material which is liquefiable by mechanical vibration and the other one of the joining locations includes a material which is not liquefiable by mechanical vibration and a structure (e.g. undercut cavities or protrusions) suitable for forming a positive fit connection with the liquefiable material. The joining process is effected by pressing the two device parts against each other and by applying ultrasonic vibration to one of the device parts when the two parts are positioned relative to each other such that the two joining locations are in contact with each other.

PROCESS FOR CREATING UNIQUE PATTERNS IN BONE FOR CARTILAGE REPLACEMENT

A process and system for performing orthopaedic surgery to create a series of channels with a subject's bone to allow a reduced pressure system to be applied directly to the bone-implant interface to enhance bone healing is provided. The process for to promote healing of a bone of a subject includes creating a three-dimensional model of the bone; preoperatively planning a location of an implant relative to the model; creating a plan for the location of precision channels that reach the bone-implant interface based on the model and the implant; resurfacing the bone to fit the implant into or onto the bone based on the preoperative plan; and milling the precision channels into the bone in the location to promote healing of the bone and/or bone implant interface; and applying a pressure reduction system at the bone-implant interface to promote bone healing. 1. A process for forming a pre-made cartilage replacement implant intended for repair of a cartilage defect in a bone of a subject comprising:receiving scan data of the bone;creating a virtual three-dimensional model of the bone and the cartilage defect;creating a three-dimensional custom shape around the cartilage defect; andshaping a pre-made cartilage replacement implant to match the custom shape in three-dimensions.2. The process of further comprising registering a location of the bone during surgery such that a precise position and orientation of the bone is known by a robot.3. The process of wherein a set of fiducial markers placed into or on the bone assist in determining the precise position and orientation of the bone within a workspace of the robot.4. The process of wherein said set of fiducial markers are formed of a material with an opacity that is different than that of the surrounding bone tissue such that it can be identified in an image.5. The process of wherein said set of fiducial markers are an active device comprising a radio frequency identification (RFID) tag.6. The process of wherein ...

BIONIC ARTIFICIAL INTERPHALANGEAL JOINT

The present invention discloses a bionic artificial interphalangeal joint. The bionic artificial interphalangeal joint includes three sets of proximal prostheses and distal prostheses matched with the proximal prostheses and respectively corresponding to the three joints from the metacarpal bone to the distal phalanx. According to the specific position of the joint to be replaced, the corresponding artificial interphalangeal joint can be selected for replacement. Among them, the bionic artificial interphalangeal joint that can be installed between the metacarpal bone and the proximal phalanx has multiple degrees of freedom, which allows the proximal phalanx to bent in any direction like a real finger, and the bending angle of the proximal phalanx can be up to about 90 degrees when the proximal phalanx is bent toward the inner side of the finger. 1121. A bionic artificial interphalangeal joint , characterized in that the bionic artificial interphalangeal joint includes a proximal prosthesis () and a distal prosthesis () matched with the proximal prosthesis ();{'b': 1', '1', '3, 'wherein, the proximal end of the proximal prosthesis () is fixed on a metacarpal bone or a phalanx, and the distal end of the proximal prosthesis () is provided with a receiving groove (),'}{'b': 2', '2', '4, 'the distal end of the distal prosthesis () is fixed on the phalanx, and the proximal end of the distal prosthesis () is provided with a turning tip (),'}{'b': 5', '3', '4', '4', '5', '5', '3, 'a bowl-shaped gasket () is arranged between the receiving groove () and the turning tip (), and the turning tip () is rotatably fixed on the bowl-shaped gasket (), and the bowl-shaped gasket () is fixed in the receiving groove ().'}2. The bionic artificial interphalangeal joint according to claim 1 , wherein:the bionic artificial interphalangeal joint includes:{'b': 11', '21, 'a first proximal prosthesis () fixed proximally to a middle phalanx, and a first distal prosthesis () fixed distally to a ...

TITANIUM PLASMA COATED MEDICAL GRADE THERMOPLASTIC OR POLYMER PROXIMAL AND DISTAL INTERPHALANGEAL TOE IMPLANT

A medical grade thermoplastic or polymer implant with an osteoconductive coating is provided, specifically for corrections of the distal and proximal interphalangeal toe joints of the foot. The implant can be either straight or angled, and can be either solid or cannulated for insertion. The implant is sized and shaped depending on the specific anatomy and desired correction. 1. An interphalangeal toe implant for deformity correction of a hammer toe , a mallet toe , a claw toe , or an arthritic toe condition , the implant comprising:an implant body having a threaded proximal end section for fixation to a first bone portion, and a distal end section with fixation features for fixing the implant body to a second bone portion,wherein the implant body comprises polyetheretherketone (PEEK),wherein the implant body comprises an osteoconductive coating,wherein the osteoconductive coating provides a surface for promoting bone growth when the implant is implanted in the first and second bone portions, andwherein the implant body is radiolucent.2. The implant of claim 1 , wherein the osteoconductive coating comprises titanium plasma.3. The implant of claim 1 , wherein the osteoconductive coating comprises HAp.4. The implant of claim 1 , wherein the implant body comprises one or more markers viewable under fluoroscopy.5. The implant of claim 1 , wherein the implant body is cannulated.6. The implant of claim 1 , wherein the implant body has a central section shaped such that the proximal end section of the implant body is oriented at a predetermined angle to the distal end section of the implant body.7. The implant of claim 6 , wherein the predetermined angle is an angle for performing an angular correction of the toe deformity.8. The implant of claim 4 , wherein the markers comprise a metal/alloy.9. The implant of claim 4 , wherein the markers comprise a distal marker at the distal end section claim 4 , a proximal marker at the proximal end section claim 4 , and a central ...

Applications of diffusion hardening techniques

A device, for example a medical implant, and a method of making the same, the device having a metal or metal alloy substrate, for example cobalt chrome, and a diffusion hardened metallic surface, for example a plasma carburized surface, contacting a non-diffusion hardened surface or a diffusion hardened surface having a diffusion hardening species different from that of the opposing surface.

IONIC POLYMER COMPOSITIONS

The present disclosure pertains to ionic polymer compositions, including semi- and fully interpenetrating polymer networks, methods of making such ionic polymer compositions, articles made from such ionic polymer compositions, and methods of making such articles and packaging for such articles. 1. A packaged article comprising an orthopedic implant and a divalent-cation-containing solution contained within a sterile package , wherein the orthopedic implant comprises an interpenetrating polymer network (IPN) or semi-IPN that comprises a first polymeric network comprising a hydrophobic thermoset or thermoplastic polymer and a second polymeric network comprising a polymer having carboxylic acid groups , and the divalent-cation-containing solution comprises 0.1 to 5 mM divalent metal cations comprising Ca.2. The packaged article of claim 1 , wherein the IPN or semi-IPN has first and second surfaces claim 1 , wherein the first surface has a composition corresponding to the first polymer and wherein a concentration of the carboxylic acid groups is at a maximum at the second surface and decreases to zero or substantially zero concentration within a bulk of the IPN or semi-IPN claim 1 , and the carboxylic acid groups are underivatized carboxylic acid groups claim 1 , sulfonic-acid-derivatized carboxylic acid groups claim 1 , or a mixture thereof.3. The packaged article of claim 2 , wherein the polymer having carboxylic acid groups comprises one or more monomers selected from acrylic acid claim 2 , methacrylic acid claim 2 , crotonic acid claim 2 , linolenic acid claim 2 , maleic acid claim 2 , and fumaric acid.4. The packaged article of claim 3 , wherein the carboxylic acid groups are underivatized.5. The packaged article of claim 3 , wherein the carboxylic acid groups include sulfonic-acid derivatized carboxylic acid groups.6. The packaged article of claim 5 , wherein the sulfonic-acid-derivatized carboxylic acid groups are amino-sulfonic-acid-derivatized carboxylic acid ...

IONIC POLYMER COMPOSITIONS

The present disclosure pertains to ionic polymer compositions, including semi- and fully interpenetrating polymer networks, methods of making such ionic polymer compositions, articles made from such ionic polymer compositions, and methods of making such articles and packaging for such articles. 1. An orthopedic implant comprising a crosslinked ionic polymer that comprises sulfonic-acid-derivatized groups , wherein the sulfonic-acid-derivatized groups are present at a surface of the implant and extend from the surface into a bulk of the implant by a distance of at least 500 microns.2. The orthopedic implant of claim 1 , wherein the sulfonic-acid-derivatized groups are amino-sulfonic-acid-derivatized groups.3. The orthopedic implant of claim 2 , wherein the implant comprises a measurable amount of an amino sulfonic acid compound of the formula (HN)R(SOH)or a salt thereof claim 2 , where R is an organic moiety claim 2 , x is a positive integer and y is a positive integer.4. The orthopedic implant of claim 3 , wherein R is a hydrocarbon moiety.5. The orthopedic implant of claim 4 , wherein the hydrocarbon moiety is an alkane moiety claim 4 , an alkene moiety claim 4 , an alkyne moiety claim 4 , an aromatic moiety claim 4 , or a hydrocarbon moiety having a combination of two or more of alkane claim 4 , alkene claim 4 , alkyne and aromatic substituents.6. The orthopedic implant of claim 4 , wherein the hydrocarbon moiety is a C-Chydrocarbon moiety.7. The orthopedic implant of claim 2 , wherein the implant comprises a measurable amount of an amino sulfonic acid compound selected from taurine and taurine derivatives.8. The orthopedic implant of claim 1 , wherein the sulfonic-acid-derivatized groups are sulfonic-acid-derivatized carboxylic groups.9. The orthopedic implant of claim 8 , wherein the crosslinked ionic polymer further comprises underivatized carboxylic acid groups.10. The orthopedic implant of claim 9 , wherein the underivatized carboxylic acid groups correspond ...

ARTIFICIAL IMPLANT FOR CARPOMETACARPAL JOINT

An artificial implant for a carpometacarpal (CMC) joint used for replacing a CMC joint surface of the first metacarpal bone is provided and includes: an insert portion having an inserting end for inserting into a bone marrow cavity exposed from an incision of the first metacarpal bone, and a front end; an articular replacement portion connected to the front end of the inserting portion and disposed outside the incision of the first metacarpal bone, and having an articular profile surface to replace the CMC joint surface of the first metacarpal bone; and an attached flange protruded from a peripheral of the articular replacement portion, attached to an outer bone surface of the first metacarpal bone adjacent to the incision, and having at least one suture hole, through which at least one suture passes for assisting to fix an abductor pollicis longus (APL) to the outer bone surface. 1. An artificial implant for a carpometacarpal joint , used for replacing a carpometacarpal joint surface of a first metacarpal bone and comprising:an insert portion having an inserting end for inserting into a bone marrow cavity exposed from an incision of the first metacarpal bone, and a front end;an articular replacement portion connected to the front end of the inserting portion and disposed outside the incision of the first metacarpal bone, and having an articular profile surface to replace the carpometacarpal joint surface of the first metacarpal bone; andan attached flange protruded from a peripheral of the articular replacement portion, attached to an outer bone surface of the first metacarpal bone adjacent to the incision, and having at least one suture hole;wherein at least one suture passes through the suture hole for assisting to fix an abductor pollicis longus to the outer bone surface.2. The artificial implant for the carpometacarpal joint according to claim 1 , wherein the attached flange is integrally connected to the articular replacement portion through a tilting ...

Hard substance multi-hooded enarthrodial joint implant

Multi-hooded enarthrodial joint implant has a hard substance articulating cup including a hard substance head-receiving cup having an articular surface upon which a head of a joint can articulate, and which, in general, has a margin generally about a hemisphere more or less and at least two hoods that are marginally extended continuations of superior one-half or so of cup containment of a sufficient magnitude to reduce an overall dimension of socket outlet to less than a hemisphere, which can embrace and contain the head. The head is made of a hard substance and has a truncated generally circular cross section, a truncated surface with a feature for attachment of the stem, and an opposing articular surface for articulation against the articular surface of the ceramic head-receiving cup. As an ensemble, the cup is combined with the head, typically with a stem, for a total joint implant. The hard substance may be, for example, a composite substance, a metal or a metal alloy. Either the cup or the head, but not both, may be ceramic when employed in an ensemble. 1. A system comprising:a constrained acetabular insert with its perimeter extending beyond hemisphere;a dual mobility liner with its perimeter extending beyond hemisphere; anda femoral head configured to tilt and rotate within the dual mobility liner;wherein the constrained acetabular insert comprises a plurality of tabs;wherein each of the plurality of tabs further comprises a lip;wherein the dual mobility liner comprises screw threads for receiving the lip of each of the plurality of tabs; andwherein when the screw threads are received entirely past the lip of each of the plurality of tabs, the dual mobility liner is free to tilt within the constrained acetabular insert.2. The system of claim 1 , wherein an outer surface of the dual mobility liner is claim 1 , except for the screw threads claim 1 , continuously spherical.3. The system of claim 2 , wherein the screw threads extend across the hemisphere of the ...

Total Arthroplasty of the Carpometacarpal Joint

A prosthesis for the CMC joint of a thumb therefore includes a metacarpal component that has a first articular surface and a stem configured for insertion and anchoring into a metacarpal canal of a thumb metacarpal bone. The stem has a dorsal surface and an opposing volar surface. Each of the dorsal surface and the volar surface is defined by a proximal region and a distal region. The proximal region of the volar surface has a volar taper angle that is greater than distal region of the volar surface and a dorsal taper angle of proximal region of the dorsal surface is less than the volar taper angle of the proximal region of the volar surface. The prosthesis further includes a trapezial component having a second articular surface cooperating with the first articular surface. The trapezial component is configured to be coupled (e.g., anchored) to a trapezium bone. 1. A prosthesis for a carpometacarpal joint of a thumb comprising:a metacarpal component having a first articular surface and a stem configured for insertion into a metacarpal canal of a thumb metacarpal bone to anchor the metacarpal component to the thumb metacarpal bone, the stem having a dorsal surface and an opposing volar surface, each of the dorsal surface and the volar surface being defined by a proximal region and a distal region, wherein the proximal region of the volar surface has a volar taper angle that is greater than distal region of the volar surface and wherein a dorsal taper angle of proximal region of the dorsal surface is less than the volar taper angle of the proximal region of the volar surface; anda trapezial component having a second articular surface cooperating with the first articular surface, the trapezial component being configured to be coupled to a trapezium bone.2. The prosthesis of claim 1 , wherein the metacarpal component further includes a baseplate and an insert that is coupled to the baseplate and wherein the first articular surface is part of the insert.3. The prosthesis ...

OSTEOSYNTHESIS DEVICE

In one embodiment, the present invention includes an intramedullary osteosynthesis or arthrodesis implant including a central body, a first pair of legs extending from the central body to a pair of leg tips, and a second pair of legs extending from the central body, in a direction opposite the first pair of legs, to a pair of leg tips such that the central body, first pair of legs and second pair of legs are positioned alongside a longitudinal axis. 1. (canceled)2. A method for osteosynthesis or arthrodesis of a joint , comprising the steps of:introducing a first end of an implant into a first bone, the first end including a pair of legs, at least two notches on each leg, the at least two notches on one leg extending in a first direction and the at least two notches on the other leg extending in a second direction, the first direction being different from the second direction; andintroducing a second end of the implant into a second bone, the second end including a plurality of notches.3. The method of claim 2 , wherein the plurality of notches on the second end extend in at least one of the first direction and the second direction.4. The method of claim 2 , wherein the second end includes a pair of legs.5. The method of claim 4 , wherein the second end includes at least two notches on each leg.6. The method of claim 5 , wherein the second end includes at least two notches on one leg extending in the first direction and at least two notches on the other leg extending in the second direction.7. The method of claim 6 , further comprising the step of:allowing the pair of legs of the first end to open to a first open position, thereby rigidly gripping the first bone, this step occurring after introducing the first end into the first bone, andallowing the pair of legs of the second end to open to a second open position, thereby rigidly gripping the second bone, this step occurring after introducing the second end into the second bone.8. The method of claim 2 , further ...

Small Bone Orthopedic Implants

Orthopedic implants described herein are used for fractures, inter-digital fusion of the fingers, toes, and other small bones of the body, as well as other procedures. Each implant has first and second drive ends for insertion into bone. The drive ends may be on the same or separate implant component(s) and include external threading. In one form, a single component includes the first and second drive ends, while in another form, a first component has the first drive end and a second component has the second drive end. In the two component version, a head of one component receives an end of the other component to provide coupling or joining of the two components. 1. An orthopedic implant for treating small bones of the hand and foot comprising:a component having a first segment and a second segment;first external threading on the first segment of the component; andsecond external threading on the second segment of the component.2. The orthopedic implant of claim 1 , wherein:the first external threading provides rotation in a first direction;the second external threading provides rotation in a second direction; andthe first and second directions are opposite one another.3. The orthopedic implant of claim 1 , wherein the first segment and the second segment are one member.4. The orthopedic implant of claim 3 , wherein the first segment and the second segment are separated by a break-away portion that allows the first segment to be separated from the second segment.5. The orthopedic implant of claim 1 , wherein the first segment and the second segment are separate first and second members.6. The orthopedic implant of claim 5 , wherein:the first member has a first end and a second end, the first end of the first member having a head; andthe second member has a first end and a second end, the first end of the second member having a boss configured for joining reception with the head of the first end of the first member.7. The orthopedic implant of claim 6 , wherein:the ...

SMALL BONE TAPERED COMPRESSION SCREW

The present invention relates to a device and system for surgical fixation of small bones, small bone fragments, and osteotomies and more particularly to compression screw having an elongated and spiked tapered threaded leading portion which is joined to a section that is free from threads and a threaded trailing portion and more sharply tapered head which has threads that continue from the threads of the leading portion. 1. A tapered compression screw for use in bone comprising:a threaded tapered compression head having a torque driving recess, anda shaft having a threaded first portion joined to the compression head and an unthreaded intermediate second portion and a threaded spiked third portion joined to the unthreaded intermediate second portion and forming a taper angle of from 3° to 15° along the central longitudinal axis of the shaft and being a length of from 25% to 75% of the length of the shaft.2. The tapered compression screw as set forth in wherein the thread of the first section and the second section is a buttress thread.3. The tapered compression screw of wherein the threaded tapered compression screw has a conical section and the threads define a compression head maximum major diameter claim 1 , and the threaded first portion has a thread that defines a first portion major diameter and compression head maximum major diameter is from 1.1 to 1.5 times the value of the first portion major diameter.4. The tapered compression screw of wherein the threaded tapered compression screw has a conical section head with an angle from 5° to 12°.5. The tapered compression screw of wherein the threaded tapered compression screw has a conical section head with an angle which is 8°+/−2°.6. The tapered compression screw of wherein the threaded tapered compression screw has a conical section head with a first length along the longitudinal axis of the screw and the spiked third portion has a second length along the longitudinal axis of the screw and the value of first ...

SMALL BONE ANGLED COMPRESSION SCREW

The present invention relates to a device and system for surgical fixation of small bones, small bone fragments, and osteotomies and more particularly to compression screw having a threaded leading portion which is joined to a section that is free from threads, and which includes an angle or from 12° to 25° in a plane through the longitudinal axis of the screw and a portion which is joined to a head having a configuration that is intended to provide anti-rotational stability and compression through the device. 1. An angled compression screw for use in bone comprising:a first portion having a head having a torque driving recess and a configuration which inhibits rotation relative to the bone,a shaft having a central longitudinal axis and a second portion joined to the head and defining an angle of from 10° to 25° along the central longitudinal axis of the shaft and a third portion joined to the second portion and including a thread and a leading end including a cutting surface.2. An angled compression screw as set forth in wherein the head has a configuration which is a modified triangle.3. An angled compression screw as set forth in wherein the modified triangle head further includes at least one longitudinal flange.4. An angled compression screw as set forth in wherein the modified triangle includes truncated tips of the triangle and the head further includes hemi-cylindrical flanges at the truncated tips.5. The intramedullary implant as set forth in wherein the first portion and the second portion include a thread and the thread of the first portion and of the second portion is a bone thread.6. The intramedullary implant as set forth in wherein the configuration of the head is threaded or radially irregular.7. An angled compression screw having a length n along a central axis and for use in an angled fusion procedure in the intramedullary channel of a bone comprising:a leading portion having a length that is from ¼ to ½ of the value of n, and a cutting tip and a ...

Method of Installing a Percutaneous Device

An intracorporeal portion of a percutaneous device for a joint disarticulation prosthesis or joint replacement prosthesis, the intracorporeal portion having an extracorporeal portion or having means for rigidly coupling directly to an extracorporeal portion, the extracorporeal portion being for location exterior to the skin, the intracorporeal portion having an articulating component for articulating with an articulating surface, wherein the articulating component is intracorporeal when installed in a human or animal subject.

METARSOPHALANGEAL JOINT REPLACEMENT DEVICE AND METHODS

A device for the repair of a phalangeal joint comprises a first anchor, a second anchor, and a flexible spacer connecting the first and second anchors. The flexible spacer comprises a plurality of elongate fibers extending axially or criss-crossed between the first and second anchors and a polymeric matrix interspersed with the plurality of elongate fibers. Specifically, a prosthetic metatarsophalangeal joint device comprises a porous metallic metatarsal bone anchor, a porous metallic phalangeal bone anchor, and a polymeric spacer element comprising parallel or criss-crossed elongate fibers that can connect the metatarsal bone anchor and the phalangeal bone anchor. Methods for manufacturing prosthetic joint devices comprise using three-dimensional printing processes or molding processes. Methods for implanting prosthetic joint devices comprise positioning porous metallic anchor components adjacent resected bones at planar interfaces and between which a polymeric spacer having axial aligned elongate fibers embedded in a matrix can be disposed. 1. A device for the repair of a phalangeal joint , the device comprising:a first anchor;a second anchor; and a plurality of elongate fibers extending between the first and second anchors; and', 'a polymeric matrix interspersed with the plurality of elongate fibers., 'a flexible spacer connecting the first anchor and the second anchor, the flexible spacer comprising2. The device of claim 1 , wherein the flexible spacer and the first and second anchors are integral with each other.3. The device of claim 2 , wherein the first anchor and the second anchor are each comprised of a porous structure.4. The device of claim 3 , wherein:the first anchor is connected to a first end of the flexible spacer via a first interdigitation zone transitioning the porous structure of the first anchor into the plurality of elongate fibers and polymeric matrix of the flexible spacer; andthe second anchor is connected to a second end of the flexible ...

BONE SEGMENT ATTACHMENT SYSTEM AND METHOD

A system for attaching a middle phalanx and a proximal phalanx together may include a middle component and a proximal component. The middle component may have a middle component bone fastener implantable into a first bore formed in the middle phalanx, and a middle component attachment end with a first engagement feature with a first shape. The proximal component may have a proximal bone fastener implantable into a second bore formed in the proximal phalanx, and a proximal component attachment end with a second engagement feature with a second shape. The first engagement feature may be movable into engagement with the second engagement feature along an engagement direction that is generally perpendicular to the middle phalanx and/or the proximal phalanx. The second shape may be complementary to the first shape such that the first engagement feature interlocks with the second engagement feature. 1. A system for attaching a middle phalanx and a proximal phalanx together , the system comprising: a middle bone fastener implantable in a first bore in the middle phalanx; and', 'a middle component attachment end comprising a first engagement feature with a first shape; and, 'a middle component comprising a proximal bone fastener implantable in a second bore in the proximal phalanx; and', 'a proximal component attachment end comprising a second engagement feature with a second shape;, 'a proximal component comprising the first engagement feature is movable into engagement with the second engagement feature along an engagement direction that is generally perpendicular to the middle phalanx and/or the proximal phalanx;', 'the second shape is complementary to the first shape such that the first engagement feature interlocks with the second engagement feature in a manner that restricts withdrawal of the first engagement feature from the second engagement feature along any direction nonparallel to the engagement direction; and', an unlocked configuration in which the first ...

INTERPOSITION IMPLANTS FOR THE HAND

An implant couples a first bone of a hand to a second bone of the hand. The implant includes a body that defines a median plane. The body also defines a first joint surface having a first central region that articulates with the first bone. The body further defines a second joint surface having a second central region that articulates with the second bone, and the second central region is disposed on an opposite side of the median plane of the body relative to the first central region. The first and second central regions correspond to profiles of first and second axial segments, respectively, the first and second axial segments are each one of a cylinder, a cone and a torus and are centered on first and second axes, respectively, and the first and second axes, as projected on the median plane, are substantially perpendicular to each other. 1. (canceled)2. An interposition implant adapted to couple a first bone and a second bone of an anatomical joint of a hand of a subject , the implant comprising a body , which is formed as a single piece of graphite covered with a layer of pyrolytic carbon and which defines:a median plane;a first joint surface having a first central region adapted to articulate with the first bone; anda second joint surface having a second central region adapted to articulate with the second bone, the second central region being disposed on an opposite side of the median plane of the body relative to the first central region;wherein the first central region and the second central region correspond to profiles of a first axial segment and a second axial segment, respectively, the first and second axial segments being each one of a cylinder, a cone and a torus and being centered on a first axis and a second axis, respectively, andwherein the first and second axes, as projected on the median plane, are substantially perpendicular to each other.3. The interposition implant of claim 2 , wherein the first and second axial segments have a cross section ...

Sling suspension system for supporting the thumb of a patient after basal joint arthroplasty

A sling suspension system for supporting the thumb of a patient after basal joint arthroplasty, the sling suspension system comprising: an index metacarpal anchor, a thumb metacarpal anchor and a sling for securing the thumb metacarpal anchor to the index metacarpal anchor; the index metacarpal anchor comprising at least one bone-engaging element for engaging the index metacarpal and a sling-engaging element for capturing the sling to the index metacarpal anchor; the thumb metacarpal anchor comprising at least one bone-engaging element for engaging the thumb metacarpal and a sling-engaging element for capturing the sling to the thumb metacarpal anchor; and the sling comprising an elongated body having a first anchor-engaging element for securing the sling to the sling-engaging element of the index metacarpal anchor, and a second anchor-engaging element for securing the sling to the sling-engaging element of the thumb metacarpal anchor, wherein the second anchor-engaging element is adjustable.

Artificial implant for trapeziometacarpal joint

An artificial implant for a trapeziometacarpal joint is provided. The artificial implant has a joint replacement portion and at least two insertion rods. The insertion rods of the artificial implant can help to decrease the wound area during the implantation of the artificial implant in order to accelerate the speed of tendon reattachment after implanting and to enhance the ability of anti-rotation.

Osteosynthesis Device

In one embodiment, the present invention includes an intramedullary osteosynthesis or arthrodesis implant including a central body, a first pair of legs extending from the central body to a pair of leg tips, and a second pair of legs extending from the central body, in a direction opposite the first pair of legs, to a pair of leg tips such that the central body, first pair of legs and second pair of legs are positioned alongside a longitudinal axis. 1a central body, a first pair of legs extending from the central body to a pair of leg tips, and a second pair of legs extending from the central body, in a direction opposite the first pair of legs, to a pair of leg tips such that the central body, first pair of legs and second pair of legs are positioned alongside a longitudinal axis;the central body having a width;the pair of tips of the first pair of legs having a width in a closed position and a width in an open position, the width in the closed position is less than the width of the central body and the width in the open position is greater than the width of the central body; andthe pair of tips of the second pair of legs having a width in a closed position and a width in an open position, the width in the closed position is less than the width of the central body and the width in the open position is greater than the width of the central body.. An intramedullary osteosynthesis or arthrodesis implant comprising: This application is a continuation of U.S. application Ser. No. 15/802,794, filed Nov. 3, 2017, which is a continuation of U.S. application Ser. No. 13/686,074, filed Nov. 27, 2012, now U.S. Pat. No. 9,839,453, which is a continuation of U.S. application Ser. No. 12/531,577, filed Feb. 1, 2010, now U.S. Pat. No. 8,394,097, which is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/FR2008/050453 filed Mar. 14, 2008, published in French, which claims priority from FR 0702003 filed Mar. 20, 2007, all of which are hereby ...

BONE STABILIZATION DEVICE

A device and method for stabilizing a broken bone while it heals is disclosed. The device preferably has a (a) first (or proximal) section with a driving head, threads and a first diameter, and (b) second (or distal) section that is threaded and has a second diameter. The first section is preferably greater in diameter than the second section so that greater torque can be applied to tighten the device. The device may include one or more self-tapping structures to lessen the torque required to screw it into a bone. 1. (canceled)223.-. (canceled)24. A method of implanting a cannulated intramedullary implant within an intramedullary canal of a metacarpal for fixation of a fracture , the method comprising:inserting a guidewire into the intramedullary canal of the metacarpal;drilling an opening into the metacarpal past a location of the fracture guided by the guidewire;rotatably driving the cannulated intramedullary implant into the intramedullary canal guided by the guidewire, the implant comprising a headless shaft having a trailing end and a leading end, the shaft comprising a thread of a constant pitch along an entire length of the shaft, wherein a first portion of the thread has a greater constant major diameter and a second portion of the thread has a smaller constant major diameter, the first portion of the thread being continuous with the second portion of the thread, and wherein the first portion of the thread engages bone material in a larger distal portion of the metacarpal and the second portion of the thread engages bone material in a narrower proximal and mid portion of the metacarpal such that the cannulated intramedullary implant is anchored in the metacarpal; andremoving the guidewire.25. The method of claim 24 , wherein the cannulated intramedullary implant is inserted with the leading end entering the opening into the intramedullary canal first claim 24 , the second portion of the thread being closer to the leading end than to the trailing end.26. The ...

Prosthetic Element for Bone Extremities Such as Fingers or Toes, or for Teeth, and Corresponding Production Method

Prosthetic element for bone extremities such as fingers or toes, or teeth, comprising a trabecular part () and two end parts or stumps (). 1. Prosthetic element for small bone extremities such as the phalanges of a hand or foot , or for dental implants , comprising a coupling stump disposed at a first end of said prosthetic element , an insertion stump disposed at a second end of the prosthetic element , shaped so as to be inserted into a corresponding seating made inside the bone , an internal core having a structural function and consisting of a solid body , disposed intermediate between said stumps , and a trabecular part , suitable for bone integration , disposed so as to cover and line said internal core , wherein said trabecular part defines the external geometry of said internal core and constitutes mechanical , and structural continuity with it.2. Prosthetic element as in claim 1 , wherein said insertion stump is associated in a single body to said coupling stump by means of said internal core.3. Prosthetic element as in claim 2 , wherein said coupling stump is configured in shape and size so as to define at least a seating for the joint of at least a finger or a toe.4. Prosthetic element as in claim 2 , wherein said coupling stump is configured in shape and size to couple with a dental prosthesis.5. Prosthetic element as in claim 4 , wherein said coupling stump comprises a shaped surface with a configuration chosen between an embedded hexagon shape claim 4 , an external hexagon shape and a conical surface.6. Prosthetic element as in claim 1 , wherein said trabecular part comprises pores claim 1 , the size of which is comprised in a range between 100 microns and 300 microns claim 1 , with an average size comprised between 230 microns and 290 microns.7. Prosthetic element as in claim 6 , wherein said trabecular part is defined by the repetition of a three-dimensional base cell the vertexes of which are not coplanar.8. Method to make a prosthetic element for ...

Suture-locking washer for use with a bone anchor, and method for supporting the thumb of a patient after basal joint arthroplasty, and other novel orthopedic apparatus and other novel orthopedic procedures

The invention provides surgical methods, devices, apparatus, and systems for supporting the thumb of a patient after basal joint arthroplasty. The embodiments of the invention comprise at least one index metacarpal anchor, at least one thumb metacarpal anchor, at least one sling for positioning the thumb metacarpal anchor relative to the index metacarpal anchor, and at least one anchor washer for tightening and securing the sling(s) without the need to tie the suture(s) components of the sling(s) into knots. Index and thumb metacarpal anchors comprise at least one bone-engaging element for engaging the respective metacarpal. The anchor washer may incorporate one or more sling-engagement mechanisms. Increasing the number of sling-engagement mechanisms associated with the anchor washer increases the surface area of the sling(s) and provides multiple sling elements to provide redundancy and increase the pull force of the sling(s) attachment(s) used to affix the thumb and index metacarpal anchors into a position relative to each other. 1. A sling suspension system for supporting the thumb of a patient after basal joint arthroplasty , the sling suspension system comprising:an index metacarpal anchor;a thumb metacarpal anchor; anda sling for securing said thumb metacarpal anchor to said index metacarpal anchor;said index metacarpal anchor comprising at least one bone-engaging element for securing said index metacarpal anchor to an index metacarpal, and a sling-engaging element for attaching said sling to said index metacarpal anchor;said thumb metacarpal anchor comprising at least one bone-engaging element for securing said thumb metacarpal anchor to a thumb metacarpal, and a sling-engaging element for attaching said sling to said thumb metacarpal anchor;wherein at least one of said sling-engaging element of said thumb metacarpal anchor and said sling-engaging element of said index metacarpal anchor comprises a cling-securing mechanism which is configured to provide one- ...

Ball and socket assembly

A ball and socket assembly including a ball component with a notch formed therein. The socket is a one-piece structure including an opening sized to receive the ball component. The ball is a capable of being inserted into the socket when the notch, cavity, or undercut is properly oriented relative to the opening of the one-piece socket.

Non-planar orthopedic implants and methods

Deformable joint implants with a generally hyperbolic paraboloid shape are disclosed, including configurations for delivery into the small joints of the body in the wrists, hands, ankle and feet, such as the first carpo-metacarpal joint, which comprises a double-saddle structure. The center of the implant may be supported, or supported and configured as a central opening. Implants with supported center regions may have a uniform or non-uniform thickness. A region of non-uniform, reduced thickness may be circular, oval or ring-like in shape, with a central support that may have an increased thickness relative to the perimeter region of the implant.

ARTIFICIAL JOINT

An artificial joint is characterized by: having a first member including a caput part on which a prescribed curved surface is formed, and a second member including a fossa part having a surface which abuts the prescribed curved surface of the caput part; the second member being rotatable in a flexing direction of a joint with a prescribed point on the caput part being the center of rotation; and the prescribed curved surface of the caput part being defined by a curve which depicts a convex arc toward the side abutting the fossa part when the caput part is viewed from the axial direction of the rotation, and in which, when two arbitrary points are taken on the curve, the radius of curvature of the point positioned further toward the flexing side of the joint on the curve is smaller than the radius of curvature of the other point. 1. An artificial joint used by being implanted in a human body , comprising:a first member including a bone head portion on which a predetermined curved surface is formed and a first stem portion implanted in a first bone; anda second member including a bone fossa portion having a surface in contact with the predetermined curved surface of the bone head portion and a second stem portion implanted in a second bone adjacent to the first bone,wherein the second member is configured to pivot in a bending and stretching direction of a joint about a predetermined point on the bone head portion as a rotation center, andthe predetermined curved surface of the bone head portion is defined by a curve that draws a convex arc toward a side abutting on the bone fossa portion when the bone head portion is viewed from an axial direction of the pivoting movement and has, when two arbitrary points are taken on the curve, a curvature radius at a point located closer to a bending side of the joint on the curve which is smaller than a curvature radius at another point.2. The artificial joint according to claim 1 , wherein the curve is a curve constituting a ...

Ionic polymer compositions

The present disclosure pertains to ionic polymer compositions, including semi.- and fully interpenetrating polymer networks, methods of making, such ionic polymer compositions, articles made from such ionic polymer compositions, and methods of making such articles and packaging, for such articles.

ORTHOPAEDIC PROSTHESIS FOR AN INTERPHALANGEAL JOINT AND ASSOCIATED METHOD

An orthopaedic prosthesis is disclosed. The orthopaedic prosthesis includes a frame including a plurality of beams defining an open-cell structure and a shell applied to the frame. The frame includes a proximal arm, a distal arm, and a central body connecting the proximal arm to the distal arm. The shell extends over the proximal arm, the distal arm, and the central body of the frame. A method of implanting an orthopaedic prosthesis is also disclosed. 1. An orthopaedic prosthesis comprising:a frame including a plurality of beams defining an open-cell structure, the frame including:a proximal arm and a distal arm,a central body connecting the proximal arm to the distal arm, the central body including a first groove and a second groove positioned opposite the first groove to permit flexion motion between the proximal arm and the distal arm, anda shell that encases the frame, the shell extending over the proximal arm, the distal arm, and the central body of the frame.2. The orthopaedic prosthesis of claim 1 , wherein the plurality of beams defines a plurality of tessellated polyhedrons.3. The orthopaedic prosthesis of claim 2 , wherein the plurality of polyhedrons includes edge-transitive convex polyhedrons.4. The orthopaedic prosthesis of claim 2 , wherein the plurality of polyhedrons includes rhombic dodecahedrons.5. The orthopaedic prosthesis of claim 1 , wherein the shell is a silicone coating applied to the frame.6. The orthopaedic prosthesis of claim 5 , wherein the frame is a single claim 5 , monolithic component formed of silicone.7. The orthopaedic prosthesis of claim 1 , wherein:the central body includes a first arcuate section and a second arcuate section that include a plurality of openings and partially define the first groove, anda third arcuate section positioned opposite the first and second arcuate sections that includes a plurality of openings and partially defines the second groove.8. The orthopaedic prosthesis of claim 7 , wherein:the central body ...

ARTHRODESIS IMPLANT

The invention relates to an implant for the osteosynthesis of the PIP arthrodesis or the DIP arthrodesis of small joints and for the osteosynthesis and stabilisation of fractures of small bones of the human skeleton, said implant being resorbable by the human body. The implant consists of two shafts placed against each other. At least one fixing aid is located between the shafts, said fixing aid protruding beyond the diameter of the shaft. Each shaft can optionally have longitudinal grooves and transverse grooves. The implant consists of a magnesium-based material which can be resorbed by the human body. The invention provides an implant which has an extremely high tensile strength, excellent stability, optimal healing properties, and an optimally adapted resorption speed. 1. An implant for the osteosynthesis of the PIP arthrodesis or the DIP arthrodesis of small joints and for the osteosynthesis and stabilisation of fractures of small bones of the human skeleton , wherein the implant comprises{'b': 1', '2, 'claim-text': {'b': 1', '2', '4, 'wherein each shaft (, ) has at least one longitudinal groove (), and'}, 'a proximal shaft () and a distal shaft (), which are connected together at an angle of 155 to 175 degrees,'}{'b': 3', '1', '2', '1', '2, 'at least one fixing aid () between the shafts (, ), which protrudes beyond the diameter of the shaft (, ), and wherein'}{'b': 1', '2', '1', '2', '3', '3', '1', '2, 'the length of the shafts (, ) is in each case 5.00 to 75.00 mm, the diameter of the shafts (, ) is 1.50 to 20.00 mm, the thickness of the fixing aids () is 0.10 to 2.00 mm, and the overhang of the fixing aids () over the diameter of the shafts (, ) is 0.25 to 4.00 mm, and'}the implant comprises a magnesium-based alloy which is resorbable by the human body and comprises 0.10 to 2.50 wt. % zirconium, 0.01 to 0.80 wt. % zinc, 1.50 to 5.00 wt. % yttrium and 2.50 to 5.00 wt. % other rare earth metals, and the copper and aluminium content in each case is less than 0. ...

Internal joint stabilizer device, system and method of use

A stabilization device is provided including an axle and a portion that can be affixed to a bone. The device is used to stabilize a joint while allowing motion of the joint along its natural trajectory and it is placed internally in order to prevent pin tract problems. Additionally, methods for using the device are provided that include, in various sequences, inserting the axle into a bone of a joint, adjusting the geometry of the device and attaching the fixable portion to another bone of the joint. The device can be provided as part of a system including an axis trajectory guide useful for locating the axis of rotation of the joint prior to insertion, adjustment and attachment of the device.

Prosthesis including ball and socket arrangement

A two-piece socket for a ball-and-socket arrangement, including a base and a cap. The socket includes a leg on one of the cap or base of the socket and a receiving groove on the other of the cap or base of the socket, wherein there is at least one opening in the leg which lines up with a corresponding opening in the groove for a fastener to extend through these openings to releasably secure the cap to the base of the socket. The orientation of the fastener is such that the fastener is under shear loading when the cap is pulled apart from the base.

INTERPOSITION IMPLANTS FOR THE HAND

An implant couples a first bone of a hand to a second bone of the hand. The implant includes a body that defines a median plane. The body also defines a first joint surface having a first central region that articulates with the first bone. The body further defines a second joint surface having a second central region that articulates with the second bone, and the second central region is disposed on an opposite side of the median plane of the body relative to the first central region. The first and second central regions correspond to profiles of first and second axial segments, respectively, the first and second axial segments are each one of a cylinder, a cone and a torus and are centered on first and second axes, respectively, and the first and second axes, as projected on the median plane, are substantially perpendicular to each other. 1. (canceled)2. A method for coupling a first bone of a hand of a patient to a second bone of the hand of the patient , the method comprising:providing an implant comprising a body defining:a median plane;a first joint surface having a first central region adapted to articulate with the first bone;a second joint surface having a second central region adapted to articulate with the second bone, the second central region being disposed on an opposite side of the median plane of the body relative to the first central region, wherein the first central region and the second central region correspond to profiles of a first axial segment and a second axial segment, respectively, the first and second axial segments being each one of a cylinder, a cone and a torus and being centered on a first axis and a second axis, respectively, the first and second axes, as projected on the median plane, being substantially perpendicular to each other; anda peripheral surface connecting the first joint surface and the second joint surface, the peripheral surface defining a peripheral groove;forming a cavity between the first bone and the second bone; ...

IMPLANT FOR A BONE JOINT

An implant () for a mammalian bone joint () for spacing a first bone () of the joint from a second bone () of the joint while allowing translational movement of the second bone in relation to the first bone is described. The implant comprises (a) a distal part () configured for intramedullary engagement with an end of the second bone, (b) a proximal part () having a platform () configured for non-engaging abutment of an end of the first bone and translational movement thereon, and (c) an articulating coupling () provided between the distal and proximal ends allowing controlled articulation of the first and second bones. The bone-abutting platform is shaped to conform to and translate upon the end of the first bone. A kit for assembly to form the implant of the invention, and the use of the implant to treat osteoarthritis in a bone joint, are also described. 130532131634151016. An implant ( , ) for a mammalian first carpometacarpal joint () for spacing a trapezium bone () of the joint from a first metacarpal bone () of the joint while allowing translational movement of the first metacarpal bone in relation to the trapezium bone , the implant comprising (a) a distal part ( , ) configured for intramedullary engagement with an end of the first metacarpal bone , (b) a proximal part () having a curved saddle-shaped platform () configured for non-engaging abutment of an end of the trapezium bone and translational movement thereon , and (c) an articulating coupling ( , ) provided between the distal and proximal parts allowing controlled articulation of the trapezium and first metacarpal bones.21016. An implant according to in which the articulating coupling is a ball and socket joint ( claim 1 , ).31631. An implant according to in which the socket () is contained within the intermedullary distal part ().41631. An implant according to in which the socket () is offset towards a volar side of the intermedullary distal part ().5. An implant according to in which the distal part ...

DEVICE FOR ASSISTING IN THE PLACEMENT OF A TRAPEZIOMETACARPAL PROSTHESIS

Disclosed is a device for assisting in the placement of a trapeziometacarpal prosthesis including a cup to be fixed in the trapezium of a patient and a stem to be fixed in the patient's first metacarpal. The device includes a first guide to be interposed between the trapezium and the first metacarpal, the first guide including a first body having a first surface to be positioned on the articular surface of the trapezium, the first surface congruent with the articular surface of the trapezium and a second surface to face the articular surface of the first metacarpal before resection, the second surface preferably being congruent with the articular surface of the first metacarpal so as to be positionable on the articular surface of the first metacarpal. The first guide also includes locating members carried by the first body and arranged to define resection lines for the first metacarpal. 114624628844844866208226aaaaba. Device () for assisting in the placement of a trapeziometacarpal prosthesis comprising a cup intended to be fixed in the trapezium () of a patient and a stem intended to be fixed in the patient's first metacarpal () , wherein said device comprises a first guide () able to be interposed between the trapezium () and the first metacarpal () , said first guide () comprising a first body () having a first surface () intended to be positioned on the articular surface () of the trapezium () , said first surface () being congruent with said articular surface () of the trapezium () , and a second surface () intended to face the articular surface () of the first metacarpal () before resection , and locating members () carried by said first body () and arranged to define resection lines () for the first metacarpal ().28826666baa. Assistance device as claimed in claim 1 , wherein the second surface () of the first body () of the first guide () is congruent with the articular surface () of the first metacarpal () so as to be suitable to be positioned on said ...

SURGICAL IMPLANTS

A surgical implant having a plastic (e.g., PEEK) component having an exposed surface, wherein at least a portion of the exposed surface has a plurality of parallel microgrooves that (i) enhance bone growth and osseointegration with adjacent bone and, after the osseointegration, (ii) increase pull-out force of the surgical implant from the adjacent bone. In certain embodiments, the microgrooves have widths of less than or equal to 12 micrometers, depths of less than or equal to 12 micrometers, crests of less than or equal to 12 micrometers, and a periodicity of less than or equal to 24 micrometers. 1. A surgical implant comprising a plastic component having an exposed surface , wherein at least a portion of the exposed surface has a plurality of parallel microgrooves that enhance bone growth and osseointegration with adjacent bone and , after the osseointegration , increase pull-out force of the surgical implant from the adjacent bone , wherein the microgrooves have widths of less than or equal to 12 micrometers , depths of less than or equal to 12 micrometers , crests of less than or equal to 12 micrometers , and a periodicity of less than or equal to 24 micrometers.2. The surgical implant of claim 1 , wherein the plastic component is the surgical implant.3. The surgical implant of claim 1 , wherein the surgical implant further comprises a non-plastic component connected to the plastic component.4. The surgical implant of claim 1 , wherein the plastic component is made of polyetheretherketone (PEEK).5. The surgical implant of claim 1 , wherein claim 1 , after the surgical implant has been implanted claim 1 , the portion of the exposed surface having the plurality of parallel microgrooves is in direct contact with bone.6. The surgical implant of claim 5 , wherein the plurality of parallel microgrooves are oriented perpendicular to the pull-out direction from the bone.7. The surgical implant of claim 5 , wherein:a second portion of the exposed surface has a second ...

METHOD AND DEVICE FOR PRODUCING AN IMPLANT

The invention relates to a method and a device for producing an implant, wherein a natural bone microstructure of a natural bone region is detected (S), an implant region in the natural bone region is marked (S), the detected bone microstructure in the marked implant region is analysed to determine reproduction parameters (S), and on the basis of the determined reproduction parameters, an artificial microstructure for producing the implant is created (S). 1. Method A method for producing an implant , comprising the steps of:{'b': '1', 'a) capturing (S) a natural bone microstructure (nKM) of a natural bone area;'}{'b': '2', 'b) marking (S) an implant area (IB) in the natural bone area;'}{'b': '3', 'b) analysing (S) the captured bone microstructure (3D-mKM) in the marked implant area to ascertain reproduction parameters; and'}{'b': 4', '14', '1, 'c) constructing (S) an artificial microstructure () on the basis of the ascertained reproduction parameters to produce the implant ().'}2. The method according to claim 1 , wherein a multiplicity of 2D sectional views (nKMto nKM) is generated by a high-resolution peripheral quantitative computed tomography method (HR-pQCT) when capturing the natural bone microstructure.3. The method according to claim 1 , wherein a multiplicity of disc parameters or a multiplicity of trabecular parameters are ascertained as reproduction parameters (RP) when analysing.414. The method according to claim 1 , wherein constructing the artificial microstructure () is realized by means of a 3D printing method.514. The method according to claim 1 , wherein the artificial microstructure () is an artificial stacked-disc structure or an artificial trabecular structure.61. The method according to claim 1 , wherein the implant () is a rod-shaped joint implant for new tissue formation at a joint claim 1 , which has a hydrophobic surface for facilitating chondrocyte differentiation of mesenchymal stem cells.7. The method according to claim 1 , wherein the ...

JOINT REPLACEMENT SPACERS

Devices and methods are disclosed for joint replacement. 1. A spacer for (a) replacing a removed portion of a first bone , and (b) articulating with a second bone , the spacer comprising:an articulating surface sized and shaped to articulate with an articular surface of the second bone; and the spacer defines first axis and a second axis not parallel to the first axis;', a first portion with a first radius of curvature; and', 'a second portion with a second radius of curvature not equal to the first radius of curvature;, 'in a cross-section of the spacer perpendicular to the first axis, the stabilizing surface defines a first curve including, a third portion with a third radius of curvature; and', 'a fourth portion with a fourth radius of curvature not equal to the third radius of curvature; and, 'in a cross-section of the spacer perpendicular to the second axis, the stabilizing surface defines a second curve including, 'the second and fourth radii of curvature are not equal., 'a stabilizing surface sized and shaped to conform to a cut surface of the first bone, wherein2. The spacer of wherein the first and third radii of curvature are equal to each other claim 1 , and equal to the radius of a curved cutting blade of a bone-shaving instrument.3. The spacer of wherein the second curve further includes a fifth portion with a fifth radius of curvature that is (a) not equal to the third radius of curvature and (b) not equal to the fourth radius of curvature.4. The spacer of wherein the fifth portion is substantially flat.5. The spacer of wherein the first axis is perpendicular to the second axis.6. The spacer of wherein the stabilizing surface is (a) convex claim 1 , (b) concave claim 1 , or (c) saddle-shaped.7. The spacer of wherein the perimeter of the spacer is substantially (a) elliptical claim 1 , (b) circular claim 1 , (c) trapezoidal claim 1 , or (d) toroidal.8. The spacer of wherein the spacer further comprises a bump protruding from the stabilizing surface.9. ...

ARTHRODESIS PLATE

The invention relates to an arthrodesis plate for the stiffening of joints, in particular finger joints, comprising a proximal and distal anchoring region which are connected to one another in a mechanically rigid manner, characterised in that at least one outer contour of one of the two anchoring regions has a cross-section which is undulating, for example roof-shaped, or is provided with alternating crests and troughs by means of coating, and/or has a transversal-sagittal cross-section. 1. An arthrodesis plate for the stiffening of joints , in particular finger joints , comprising a proximal and distal anchoring region which are connected to one another in a mechanically rigid manner , characterised in that at least one outer contour of one of the two anchoring regions has an undulating sagittal and/or transversal cross-section.2. The arthrodesis plate according to claim 1 , characterised in that the anchoring regions are configured for anchoring by way of a press fit in a flat slot in each of the two bone ends of a joint defect intended for arthrodesis by means of the arthrodesis plate claim 1 , the respective anchoring region having a thicker cross-section than the respective slot.3. The arthrodesis plate according to claim 1 , characterised in that the top side and bottom side of the anchoring regions have an undulating sagittal and/or transversal cross-section.4. The arthrodesis plate according to claim 1 , characterised in that the undulating sagittal and/or transversal cross-section of the top side and bottom side extend parallel to one another at least in sections.5. The arthrodesis plate according to claim 1 , characterised in that the undulating sagittal and/or transversal cross-section is zigzag-shaped with straight rising sides and straight falling sides.6. The arthrodesis plate according to claim 1 , characterised in that at least regions of the two anchoring regions have a transversal cross-section which is wider than it is high and/or is rectangular. ...

Guide tool for bone and/or cartilage repair or joint remodeling

A guide tool for guiding surgical instrumentation and facilitating insertion of surgical implants for repair of cartilage and/or bone damage and/or for remodeling of a joint surface for improved mobility in a finger or toe joint is disclosed. The guide tool includes an attachment part including a patient specific contact surface adapted to fit the proximal phalanxes or metatarsal bones in a toe or the distal-, middle-, or proximal phalanxes or metacarpal bones in a finger and further including a directing flange. A design model designing a guide tool described above and the use of the instruments are also disclosed.

High density fibrous polymers suitable for implant

This invention includes malleable, biodegradable, fibrous compositions for application to a tissue site in order to promote or facilitate new tissue growth. One aspect of this invention is a fibrous component that provides unique mechanical and physical properties. The invention may be created by providing a vessel containing a slurry, said slurry comprising a plurality of natural or synthetic polymer fibers and at least one suspension fluid, wherein the polymer fibers are substantially evenly dispersed and randomly oriented throughout the volume of the suspension fluid; applying a force, e.g., centrifugal, to said vessel containing said slurry, whereupon said force serves to cause said polymer fibers to migrate through the suspension fluid and amass at a furthest extent of the vessel, forming a polymer material, with said polymer material comprising polymer fibers of sufficient length and sufficiently viscous, interlaced, or interlocked to retard dissociation of said polymer fibers.

Devices and methods for metatarsophalangeal arthroplasty procedures

A device for use during an arthroplasty procedure of a joint of a patient, the joint extending between a first joint end of a first bone and an abutting second joint end of a second bone of the patient. The device includes first and second components that can be mated together. The first component includes an attachment fitting configured for disposing over the first joint end of the first bone and a stem extending from the attachment fitting and suitable for extending along an intra-medullary canal of the first bone. The second component includes an end plate configured to mate with the attachment fitting and a longitudinal plate extending from the end plate and configured for disposing along a medial, longitudinal surface of the first bone. The device also includes at least one fastener for coupling the longitudinal plate to the first bone.

BIO-MECHANICAL PROSTHETIC IMPLANT

There is disclosed a finger prosthetic implant assembly. In an embodiment, the assembly includes a distal phalanges. The implant includes a medial phalanges having an operable connection with the distal phalanges. The implant includes a proximal phalanges having an operable connection with the medial phalanges. The implant includes an adjustment mechanism configured to provide a desired length between the distal phalanges and the proximal phalanges. The implant may optionally include a flexor and extensor ligament component having an operable connection with at least one of the medial phalanges and the proximal phalanges, and the flexor and extensor ligament component configured for attachment to metacarpal bone in a hand. Other embodiments are also disclosed. 1. A finger prosthetic implant assembly , comprising:a distal phalanges;a medial phalanges having an operable connection with the distal phalanges;a proximal phalanges having an operable connection with the medial phalanges;an adjustment mechanism configured to provide a desired length between the distal phalanges and the proximal phalanges; anda flexor and extensor ligament component having an operable connection with at least one of the medial phalanges and the proximal phalanges, and the flexor and extensor ligament component configured for attachment to metacarpal bone in a hand.2. The assembly of claim 1 , wherein the proximal phalanges has a proximal end configured to anchor into metacarpal bone.3. The assembly of claim 1 , wherein the distal phalanges claim 1 , and the proximal phalanges are configured for disposal within a skin of a patient.4. The assembly of claim 1 , wherein the distal phalanges claim 1 , medial phalanges claim 1 , and the proximal phalanges are configured for growing skin cells placed thereon.5. The assembly of claim 1 , wherein the adjustment mechanism configured to provide the desired length between the distal phalanges and the proximal phalanges includes an upper medial phalanges ...

BIO-MECHANICAL PROSTHETIC FULL FINGER

There is disclosed a prosthetic full finger assembly. In an embodiment, the assembly includes a distal phalanges. The assembly further includes a middle phalanges having an operable connection with the distal phalanges. The assembly includes a proximal phalanges ring having an operable connection with the middle phalanges. The assembly includes a proximal phalanges yoke having an operable connection with the proximal phalanges ring. The assembly includes a metacarpal back place having an operable connection with the proximal phalanges yoke and an operable connection with the proximal phalanges ring. The assembly includes an anchoring portion having an operable connection with the metacarpal back plate at a location proximal of the operable connection of the proximal phalanges ring. Other embodiments are also disclosed. 1. A prosthetic full finger assembly , comprising:a distal phalanges;a middle phalanges having an operable connection with the distal phalanges;a proximal phalanges ring having an operable connection with the middle phalanges;a proximal phalanges yoke having an operable connection with the proximal phalanges ring;a metacarpal back place having an operable connection with the proximal phalanges yoke and an operable connection with the proximal phalanges ring; andan anchoring portion having an operable connection with the metacarpal back plate at a location proximal of the operable connection of the proximal phalanges ring.2. The assembly of claim 1 , wherein the anchoring portion includes a thumb strap.3. The assembly of claim 2 , wherein the thumb strap includes a grommet anchor.4. The assembly of claim 1 , wherein the operable connection of the middle phalanges with the distal phalanges includes a pair of distal hinges and a proximal pulling hinge.5. The assembly of claim 1 , wherein the operable connection of the proximal phalanges ring with the middle phalanges includes a pair of proximal hinges.6. The assembly of claim 1 , wherein the operable ...

BIO-MECHANICAL PROSTHETIC THUMB

There is disclosed a prosthetic thumb assembly. In an embodiment, the assembly includes a distal phalanges. The assembly includes a proximal phalanges having an operable connection with the distal phalanges. The assembly includes a thumb strap ring having an operable connection with the distal phalanges. The assembly includes a proximal phalanges yoke having an operable connection with the thumb strap ring. The assembly includes an anchoring portion having an operable connection with the thumb strap ring. Other embodiments are also disclosed. 1. A prosthetic thumb assembly , comprising:a distal phalanges;a proximal phalanges having an operable connection with the distal phalanges;a thumb strap ring having an operable connection with the distal phalanges;a proximal phalanges yoke having an operable connection with the thumb strap ring; andan anchoring portion having an operable connection with the thumb strap ring.2. The assembly of claim 1 , wherein the anchoring portion includes a thumb strap.3. The assembly of claim 1 , wherein the operable connection of the proximal phalanges with the distal phalanges includes a pair of distal hinges and a proximal pulling hinge.4. The assembly of claim 1 , wherein the operable connection of the thumb strap ring with the proximal phalanges includes a pair of proximal hinges.5. The assembly of claim 1 , wherein the operable connection of the thumb strap ring with the proximal phalanges yoke is a hinge adjacent a distal end of the thumb strap ring and adjacent a distal end of the proximal phalanges yoke.6. A prosthetic full finger assembly claim 1 , comprising:a distal phalanges having an operable connection at a proximal end thereof;a metacarpal back plate having an operable connection adjacent a distal end thereof and an anchor adjacent a proximal end thereof; andarticulation components configured between the metacarpal back plate and the distal phalanges;wherein the metacarpal back plate is configurable for placement on a back ...

PROSTHESIS FOR THE RESTORATION OF A JOINT BETWEEN TWO BONES, AND ANCILLARY TOOL FOR THE ASSEMBLY THEREOF

A prosthesis includes a first and second plate; elements for mounting the plates to pivot about an axis, which include a flexible hinge including a cylindrical plane flexible strip with two cylindrical swellings respectively associated with two edges of the strip, the dimension of the cross-sections of the swellings, taken in a direction perpendicular to the plane containing the pivot axis and passing through the swellings, being greater than the thickness of the strip taken in the same direction, a hole in each plate of shape complementary to the swellings and opening out in a first face of the corresponding plate; a slot made in each plate and opening out into the hole of that plate, in a second of its faces, and in the first face, the hinge and plates being mounted to so that the swellings and the strip are situated respectively in the two holes and slots. 112. A prosthesis for restoring a joint between first and second bones (O , O) , the prosthesis comprising:{'b': '11', 'a first plate ();'}{'b': 12', '11', '1, 'means () for associating this first plate () with a resected end of the first bone (O);'}{'b': '21', 'a second plate ();'}{'b': 22', '21', '2, 'means () for associating this second plate () with a resected end of the second bone (O); and'}{'b': 30', '11', '21', '31, 'means () for mounting the two plates (, ) pivotally relative to each other about a pivot axis ();'}{'b': 30', '11', '21', '31, 'the prosthesis being characterized by the fact that the means () for mounting the two plates (, ) pivotally relative to each other about the pivot axis () are constituted by{'b': '40', 'claim-text': [{'b': '41', 'a plane flexible strip () of substantially cylindrical shape;'}, {'b': 42', '43, 'two oblong swellings (, ) of substantially cylindrical shape; and'}, {'b': 42', '43', '41', '31', '42', '43', '31', '41, 'means for associating these two oblong swellings (, ) respectively with two opposite edges of said flexible strip () so that the generator lines of the ...

PROSTHESIS

A prosthesis for primary artrodhesis can be used for artroplasty and a prosthesis for artroplasty comprises members for artrodhesis. The prosthesis () for primary artrodhesis comprises a locking member () with an attachment portion () which is insertable into a hole () in a first attachment member () of the prosthesis for location of the locking member therein, and a lockable member () integral with a second attachment member () of the prosthesis. The lockable member () is configured for adjustable setting thereof relative to the locking member () and for fixation thereof, in set position, to the locking member. Alternatively, the lockable member comprises an attachment portion which is insertable into a hole in the second attachment member for location of the lockable member therein. At the prosthesis for artroplasty, the hole in the first screw-like attachment member is partly configured to define a press fit with an attachment pin of a socket member and partly threaded to permit, after removal of the socket member, during artrodhesis, securing by screwing in the hole of the locking member for cooperation with a lockable member which is configured for adjustable setting thereof relative to the locking member and for fixation thereof, in set position, to the locking member. 110-. (canceled)11. Prosthesis for replacement of a joint (arthroplasty) ,{'b': 1', '2', '3, 'wherein the prosthesis () comprises two prosthesis members (, ) which each is configured for attachment thereof to at least one of the bones at the joint,'}{'b': 2', '4', '3', '5, 'wherein one of the prosthesis members () comprises a first screw-like attachment member () which is configured for location in at least one of the bones at the joint and the other prosthesis member () a second screw-like attachment member () which is configured for location in at least one other bone at the joint,'}{'b': 2', '6', '3', '7, 'wherein said one prosthesis member () originally comprises a socket member () and said ...

IMPLANT FOR A BONE JOINT

An implant () for a mammalian bone joint () for spacing a first bone () of the joint from a second bone () of the joint while allowing translational movement of the second bone in relation to the first bone is described. The implant comprises (a) a distal part () configured for intramedullary engagement with an end of the second bone, (b) a proximal part () having a platform () configured for non-engaging abutment of an end of the first bone and translational movement thereon, and (c) an articulating coupling () provided between the distal and proximal ends allowing controlled articulation of the first and second bones. The bone-abutting platform is shaped to conform to and translate upon the end of the first bone. A kit for assembly to form the implant of the invention, and the use of the implant to treat osteoarthritis in a bone joint, are also described. 1. An implant for a mammalian first carpometacarpal joint for spacing a trapezium bone of the joint from a first metacarpal bone of the joint while allowing translational movement of the first metacarpal bone in relation to the trapezium bone , the implant comprising (a) a distal part configured for intramedullary engagement with an end of the first metacarpal bone , (b) a proximal part having a curved saddle-shaped platform configured for non-engaging abutment of an end of the trapezium bone and translational movement thereon , and (c) an articulating coupling provided between the distal and proximal parts allowing controlled articulation of the trapezium and first metacarpal bones.2. An implant according to in which the articulating coupling is a ball and socket joint.3. An implant according to in which the socket is contained within the intermedullary distal part.4. An implant according to in which the socket is offset towards a volar side of the intermedullary distal part.5. An implant according to in which the distal part comprises an intramedullary stem configured for interference fit in a medullary cavity. ...

ARTHRODESIS IMPLANT AND INSTRUMENT FOR GRIPPING SUCH AN IMPLANT

The invention concerns an arthrodesis implant () allowing promoting the bone fusion of two bones, said implant () comprising: 11231. An arthrodesis implant () allowing promoting the bone fusion of a first bone () with a second bone () , said implant () comprising:{'b': 4', '1', '2', '4', '6', '2', '7, 'a substantially rigid and non-deformable anchoring body (), designed to ensure the anchoring of the implant () in the first bone (), the anchoring body () extending between an end () for penetration in said first bone () and an opposite base end (), and'}{'b': 5', '1', '3', '5', '9', '10', '11', '4', '7', '9', '10', '11', '3, 'a deformable portion () designed to ensure the anchoring of the implant () in the second bone (), said deformable portion () comprising at least two anchoring arms (, , ) which protrude beyond the anchoring body () from the base end () of the latter, the anchoring arms (, , ) being separated from each other by a free space (E) so as to be able to be brought closer to each other by deformation of said anchoring arms under the action of the second bone ().'}{'b': 9', '10', '11', '22', '9', '10', '11', '20, 'and being characterized in that at least one of the anchoring arms (, , ) is provided with a longitudinal reinforcing fin () protruding beyond the anchoring arm (, , ) from a lateral side () of the latter.'}21591011. The implant () according to the preceding claim , characterized in that the deformable portion () is formed by three anchoring arms ( , , ).31910115. The implant () according to any one of the preceding claims , characterized in that the anchoring arms ( , , ) are substantially parallel to each other , so that the deformable portion () has an external contour with a substantially cylindrical or prismatic general shape.419101121910112191011. The implant () according to any one of the preceding claims , characterized in , that at least one of the anchoring arms ( , , ) has a reduced section area () so as to promote the deformation of ...

Prosthesis for replacing joint in a human hand or foot

A prosthesis for replacing a joint between a first bone and a second bone in a human hand or foot includes first and second rigid blocks (110, 120) interconnected by a flexible bridging structure (130). In certain embodiments, the flexible bridging structure employs a helical spring oriented with its central axis aligned with a central axis of a bone anchor portion of the first rigid block. One or more shear-limiting element (101, 140) is deployed within an internal volume of the helical spring (130) to limit an extent of shear deformation applied to the helical spring. Other aspects of the invention relate to adjustable bone-abutment flanges, an alternative bridging structure employing a helically-twisted leaf spring, and a structure and method for bridging between the first metacarpal and the scaphoid in case of removal of the trapezium from the hand.

Drive device

A finger joint drive device includes a first base section disposed on a back of a hand, a second base section rotatable with respect to the first base section, a drive section adapted to rotate the second base section, and an attachment mechanism. Further, the attachment mechanism is provided with a first curved portion having contact with a palm of the hand in an attached state, and a second curved portion and a third curved portion adapted to connect the first curved portion to the first base section. The first curved portion is arranged along a life line in the attached state. Therefore, the finger joint drive device can stably be fixed to the hand, and the degree of freedom of the fingers can sufficiently ensured.

Orthopaedic Implants Having Self-Lubricated Articulating Surfaces Designed to Reduce Wear, Corrosion, and Ion Leaching

An orthopaedic implant can replace a joint in a patient. The orthopaedic implant includes a first component having a first component surface and a second component having a second component surface. The first component surface and the second component surface mate at an interface. The first component surface includes a metal substrate, a nanotextured surface, a ceramic coating, and a transition zone. The nanotextured surface is disposed directly upon the metal substrate and has surface features in a size of 10meters. The ceramic coating conforms to the nanotextured surface and includes a plurality of bio-active sites configured to attract and retain calcium and phosphorous cations. The transition zone is disposed between the metal substrate and the ceramic coating. The transition zone includes a concentration gradient transitioning from the metal substrate to the ceramic coating and there is no distinct interface between the metal substrate and the ceramic coating. 1. An orthopaedic implant to replace a joint in a patient , the orthopaedic implant comprising:a first component having a first component surface; and a metal substrate;', {'sup': '−9', 'a nanotextured surface disposed directly upon the metal substrate having surface features in a size of 10meters;'}, 'a ceramic coating conforming to the nanotextured surface and including a plurality of bio-active sites configured to attract and retain calcium and phosphorous cations; and', 'a transition zone disposed between the metal substrate and the ceramic coating, wherein the transition zone includes a concentration gradient transitioning from the metal substrate to the ceramic coating and wherein there is no distinct interface between the metal substrate and the ceramic coating., 'a second component having a second component surface, wherein the first component surface and the second component surface are configured to mate at an interface, wherein the first component surface includes2. The orthopaedic implant ...

ORTHOPAEDIC PROSTHESIS FOR AN INTERPHALANGEAL JOINT AND ASSOCIATED METHOD

An orthopaedic prosthesis is disclosed. The orthopaedic prosthesis includes a frame including a plurality of beams defining an open-cell structure and a shell applied to the frame. The frame includes a proximal arm, a distal arm, and a central body connecting the proximal arm to the distal arm. The shell extends over the proximal arm, the distal arm, and the central body of the frame. A method of implanting an orthopaedic prosthesis is also disclosed. 1. A method of implanting an orthopaedic prosthesis , comprising:removing a portion of a first phalangeal bone of a patient, a portion of second phalangeal bone, and a natural joint between the first phalangeal bone and the second phalangeal bone,inserting a proximal end of an orthopaedic prosthesis into the first phalangeal bone, andinserting a distal end of the orthopaedic prosthesis into the second phalangeal bone,wherein the orthopaedic prosthesis includes an inner frame comprising a plurality of tessellated polyhedrons and an outer shell that encases the inner frame.2. The method of claim 1 , wherein inserting the proximal end of the orthopaedic prosthesis includes engaging the outer shell of the orthopaedic prosthesis with the patient's tissue.3. The method of claim 1 , wherein inserting the distal end of the orthopaedic prosthesis includes engaging the outer shell of the orthopaedic prosthesis with the patient's tissue.4. The method of claim 1 , further comprising making the inner frame via a stereolithographic process.5. The method of claim 4 , further comprising coating the inner frame with the outer shell.6. The method of claim 1 , wherein the plurality of tessellated polyhedrons includes rhombic dodecahedrons.7. The method of claim 1 , wherein the orthopaedic prosthesis further includes a central joint connecting the proximal end and the distal end claim 1 , wherein the central joint includes a palmar groove extending from a palmar opening formed in a palmar end of the central body claim 1 , wherein the ...

DEVICE TO BE IMPLANTED IN HUMAN OR ANIMAL TISSUE AND METHOD FOR IMPLANTING AND ASSEMBLING THE DEVICE

An implant or endoprosthesis suitable to be implanted in human or animal tissue includes two (or more than two) parts to be joined in situ. Each one of the parts includes a joining location, the two joining locations facing each other when the device parts are positioned for being joined together, wherein one of the joining locations includes a material which is liquefiable by mechanical vibration and the other one of the joining locations includes a material which is not liquefiable by mechanical vibration and a structure (e.g. undercut cavities or protrusions) suitable for forming a positive fit connection with the liquefiable material. The joining process is effected by pressing the two device parts against each other and by applying ultrasonic vibration to one of the device parts when the two parts are positioned relative to each other such that the two joining locations are in contact with each other.

WHOLLY PATIENT-SPECIFIC ORTHOPEDIC IMPLANTS AND IMPLANTING APPRATUSES, SYSTEM AND MANUFACTURE THEREOF

The present invention involves orthopedic implants of small joints in human, in particular a truly patient-specific bone implanting system comprising the implant and surgical tools fabricated by additive manufacturing techniques based on the inputs conforming to each patient's anatomy and obtainable from a wide range of existing 3-dimensional imaging and image processing technologies, which offers a substantial progress in logistics, efficiency of surgical operation, and functionality of treated bones. 182-. (canceled)83. A computer-based method of designing a customized patient-specific implant of a small-joint bone , wherein said implant comprises a head and a stem , wherein said small joint bone comprises a shaft and an intramedullary cavity , and wherein said method comprises steps of—obtaining a three-dimensional anatomic information of a patient in a form of images, individual points (point-cloud data), surfaces, or solid bodies;measuring morphological parameters of the patient's bone;identifying anatomic landmarks;generating, based on the morphological parameters and anatomic landmarks, a three-dimensional model of the head, wherein said three-dimensional model of the head comprises a contour and a solid body; andgenerating, based on the morphological parameters and anatomic landmarks, a three-dimensional model of the stem, wherein said three-dimensional model of the stem comprises an orthopedically compatible object for insertion into the intramedullary cavity,wherein said small-joint bone is selectable from a group consisting of elbow, shoulder, wrist, hand, finger, ankle, foot, and toe bones.84. A computer-based method of claim 83 , further comprising a step of compensating a thickness of an articular cartilage claim 83 , wherein said step further comprises steps of—computing a three-dimensional cartilage information of the relevant bone from at least one of a bone database and a patient's CT arthrogram data, wherein said bone database and arthrogram data ...

FUSION IMPLANT

Implants, instruments, and methods are presented for fixing adjacent bone portions to promote fusion of the bone portion. 120.-. (canceled)21. A method of fusing a bone joint , the method comprising:inserting a first end of a first component into a first bone with a second end of the first component projecting from the first bone;inserting a first end of a second component into a second bone adjacent the first bone, the second component having a second end including a socket, the socket having a smooth inner wall free of discrete axially spaced features;inserting the second end of the first component into the socket in a continuously adjustable axial sliding relationship; andadjusting the axial position of the first and second components by axially sliding the second end of the first component along the smooth inner wall of the socket to a desired axial position.22. The method of claim 21 , further comprising:separating the first and second components by axially sliding the first and second components apart.23. The method of claim 21 , wherein at least one of the first and second components includes a polymer portion claim 21 , the method further comprising:separating the first and second components by cutting through the polymer portion.24. The method of claim 21 , wherein at least one of the first and second components includes at least one outwardly projecting anti-rotation member claim 21 , the method further comprising:engaging the at least one anti-rotation member with the bone surrounding the other of the first and second components in a torque transmitting relationship to resist rotation of the bone surrounding the other of the first and second components relative to the anti-rotation member.25. The method of claim 21 , wherein adjusting the axial position of the first and second components comprises adjusting the first and second components to leave a space between the first and second bones claim 21 , the method further comprising:placing bone graft ...

CARPOMETACARPAL (CMC) IMPLANTS AND METHODS

Implants suitable for use in a carpometacarpal joint includes an upper surface, a lower surface, and sidewalls extending between the upper surface and the lower surface. The implant includes hydrogel material such as polyvinyl alcohol (PVA) hydrogel. Kits can include systems for preparing an implantation site, creating a cavity, and/or deploying the implant. Methods of treating a carpometacarpal joint include deploying an implant in a recess in a carpometacarpal bone. 1. An implant comprising: [ a first peak;', 'a second peak;', 'a first trough laterally between the first peak and the second peak; and', 'a second trough laterally between the first peak and the second peak, the first peak laterally between the first trough and the second trough, the second peak laterally between the first trough and the second trough;, 'an upper surface comprising a saddle shape including, 'a planar lower surface opposite the upper surface; and', 'sidewalls extending between the upper surface and the lower surface., 'a hydrogel body comprising2. The implant of claim 1 , wherein the upper surface is contoured to correspond to an outer surface of a trapezium.3. The implant of claim 1 , wherein the body has a diameter between 4 mm and 8 mm.4. The implant of claim 1 , configured to be placed in a carpometacarpal joint.5. The implant of claim 1 , wherein the lower surface is configured to be placed in a cavity in a first metacarpal bone and wherein the upper surface is configured to abut a trapezium.6. The implant of claim 1 , wherein a distance between at least one of the first peak and the second peak and the planar lower surface is between 10% and 20% greater than a distance between at least one of the first trough and the second trough and the planar lower surface.7. A method of positioning an implant in a carpometacarpal joint claim 1 , the method comprising: an introducer comprising first alignment indicia; and', 'a plunger comprising second alignment indicia; and, 'aligning an ...

ARTIFICIAL IMPLANT FOR CARPOMETACARPAL JOINT

An artificial implant for a carpometacarpal (CMC) joint used for replacing a CMC joint surface of the first metacarpal bone is provided and has: an insert portion having an inserting end for inserting into a bone marrow cavity exposed from an incision of the first metacarpal bone, and a front end; an articular replacement portion connected to the front end of the inserting portion and disposed outside the incision of the first metacarpal bone, and having an articular profile surface to replace the CMC joint surface of the first metacarpal bone; and an attached flange protruded from a peripheral of the articular replacement portion, attached to an outer bone surface of the first metacarpal bone adjacent to the incision, and having at least one suture hole, through which at least one suture passes for assisting to fix an abductor pollicis longus (APL) to the outer bone surface. 1. An artificial implant for a carpometacarpal joint , used for replacing a carpometacarpal joint surface of a first metacarpal bone and comprising:an insert portion having an inserting end for inserting into a bone marrow cavity exposed from an incision of the first metacarpal bone, and a front end;an articular replacement portion connected to the front end of the inserting portion and disposed outside the incision of the first metacarpal bone, and having an articular profile surface to replace the carpometacarpal joint surface of the first metacarpal bone; andan attached flange protruded from a peripheral of the articular replacement portion, attached to an outer bone surface of the first metacarpal bone adjacent to the incision, and having at least one suture hole;wherein an interval is formed between the attached flange and the first metacarpal bone, and at least one suture passes through the interval and the suture hole, and the suture is knotted with an abductor pollicis longus for assisting to fix the abductor pollicis longus to the outer bone surface;wherein the articular profile ...

ATTACHMENT MEMBER AND CONNECTING MEMBER FOR A CARPOMETACARPAL THUMB JOINT PROSTHESIS AND CARPOMETACARPAL THUMB JOINT PROSTHESIS

The invention relates to an attachment member () and a connecting member () for a carpometacarpal thumb joint prosthesis () as well as to said thumb joint prosthesis. The attachment member () comprises a screw-like part () for attachment by screwing into the second meta-carpal bone and a locking device () for locking the screw-like part to the connecting member (). The connecting member comprises an elongated, arcuate element () which at one end portion () thereof is configured with a hole () for connection to the attachment member () for the second metacarpal bone and which at the opposite end portion () thereof is configured with a hole () for connection to an attachment member () for the first metacarpal bone. The joint prosthesis () comprises said attachment member () for the second metacarpal bone, an attachment member () with a screw-like part () for attachment by screwing into the first metacarpal bone and with an articulating ball element () as well as a corresponding articulating socket element (), and said connecting member (). 1. Attachment member for a carpometacarpal thumb joint{'b': 2', '4', '2', '8', '16', '3', '1, 'wherein the attachment member () comprises a screw-like part () which is configured for attachment by screwing into the second metacarpal bone (M) and a locking device () which is configured for locking the screw-like part to a connecting member () of the joint prosthesis for connecting the attachment member for the second metacarpal bone to an attachment member () for the first metacarpal bone (M), and'}{'b': 8', '11', '11', '4', '11', '14', '16', '17, 'i': a', 'b, 'wherein the locking device () comprises a locking pin () of which one end portion () is attached to the screw-like part () and of which the opposite end portion () is configured for insertion into a hole () in the connecting member (), and a locking means () which is configured for locking the locking pin to the connecting member.'}211114a. Attachment member according to claim ...

ARTHRODESIS IMPLANT AND SURGICAL KIT COMPRISING SUCH AN IMPLANT

The invention concerns an arthrodesis implant () for promoting the osseous fusion of a first bone () with a second bone (), said implant () comprising a primary component () including a primary anchoring body () and a male connector (), and a secondary component () including a secondary anchoring body () and a female connector (), said female connector () comprising: 112314567899. An arthrodesis implant () for promoting the osseous fusion of a first bone () with a second bone () , said implant () comprising a primary component () including a primary anchoring body () and a male connector () , and a secondary component () including a secondary anchoring body () and a female connector () , said female connector () comprising:{'b': 10', '11', '8', '12', '14', '11', '12, 'a main body () which extends longitudinally between a rear end () linked to said secondary anchoring body () and an opposite front face (), and which has a lateral wall () linking said rear end () to said front face (),'}{'b': 15', '10', '6', '4', '7, 'a housing () formed within said main body () and configured to receive said male connector () in order to link together said primary () and secondary () components,'}{'b': 9', '18', '10', '15', '12', '14', '6', '15', '18, 'said female connector () further comprising an opening () which is formed in said main body (), in communication with said housing (), and which extends continuously on both said front face () and said lateral wall (), and which is sized and configured to enable a lateral introduction of the male connector () into said housing () via said opening (),'}{'b': 4', '6', '5', '8', '4', '2', '7', '3, 'each of said primary () and secondary () components forming an integral part made in one piece, and said primary () and secondary () anchoring bodies being respectively designed to ensure the insertion and anchoring of the primary component () into the first bone (), and of the secondary component () into the second bone (), by impaction or by ...

IMPLANT FOR A BONE JOINT

An implant () for a mammalian bone joint () for spacing a first bone () of the joint from a second bone () of the joint while allowing translational movement of the second bone in relation to the first bone is described. The implant comprises (a) a distal part () configured for intramedullary engagement with an end of the second bone, (b) a proximal part () having a platform () configured for non-engaging abutment of an end of the first bone and translational movement thereon, and (c) an articulating coupling () provided between the distal and proximal ends allowing controlled articulation of the first and second bones. The bone-abutting platform is shaped to conform to and translate upon the end of the first bone. A kit for assembly to form the implant of the invention, and the use of the implant to treat osteoarthritis in a bone joint, are also described. 120.-. (canceled)21. An implant for a mammalian first carpometacarpal joint for spacing a scaphoid bone of the joint from a first metacarpal bone of the joint while allowing translational movement of the first metacarpal bone in relation to the scaphoid bone , the implant comprising:(a) a distal part configured for intramedullary engagement with an end of the first metacarpal bone,(b) a proximal part having a platform configured for non-engaging abutment of an end of the scaphoid bone and translational movement thereon, and(c) an articulating coupling provided between the distal and proximal parts, allowing controlled articulation of the scaphoid and first metacarpal bones, wherein the articulating coupling is connected to the distal part at a location offset from a longitudinal axis of the distal part.22. The implant according to claim 21 , wherein the articulating coupling is a ball and socket joint.23. The implant according to claim 22 , wherein a socket of the ball and socket joint is contained within the distal part.24. The implant according to claim 21 , wherein the platform is configured to conform to a ...

Implant Device(s) Including Tapered Protrusions and Method(s) for Inserting the Same into Bone

An example implant device includes a base having a surface that mates with bone, and a plurality of tapered protrusions positioned on the base and extending from the surface of the base that mates with bone. A surface of the plurality of tapered protrusions includes a textured surface to increase area for bone growth. An example method for inserting the implant device into bone includes forcing the plurality of tapered protrusions of the implant device into the bone, and securing the implant device in place without cement due to the plurality of tapered protrusions cutting into the bone for fixation of the implant device. 1. An implant device comprising:a base having a surface that mates with bone; anda plurality of tapered protrusions positioned on the base and extending from the surface of the base that mates with bone, wherein a surface of the plurality of tapered protrusions includes a textured or porous surface to increase area for bone growth.2. The implant device of claim 1 , wherein the textured surface includes one of a porous structure or coating claim 1 , a sintered surface claim 1 , a bead blasted surface claim 1 , a thermal/plasma spray.3. The implant device of claim 1 , wherein the plurality of tapered protrusions have a height between about 1 mm to about 5 mm claim 1 , a length between about 2 mm to about 4 cm claim 1 , and a width between about 0.5 mm to about 2.5 mm.4. The implant device of claim 1 , wherein the plurality of tapered protrusions vary in height among each other.5. The implant device of claim 1 , wherein the plurality of tapered protrusions are arranged as trapezoidal blades.6. The implant device of claim 1 , wherein the plurality of tapered protrusions comprise side walls that taper inward up to about 20°.7. The implant device of claim 1 , wherein the plurality of tapered protrusions comprise:a bottom portion with approximately parallel side walls; anda top portion connected to the bottom portion, the top portion having a tapered tip. ...

BONE JOINT IMPLANTS

Bone joint implants are described herein. The bone joint implants may comprise a metallic proximal platform configured for translational motion on the trapezium bone; a distal stem configured for intramedullary engagement with an end of the first metacarpal bone; an articulating coupling between the proximal platform and distal stem; and a proximal non-metallic wear surface and a distal non-metallic wear surface. 120.-. (canceled)21. A bone joint implant for a mammalian first carpometacarpal joint , comprising:a proximal part configured for translational motion on the trapezium bone, the proximal part including a platform;a distal part configured for intramedullary engagement with an end of the first metacarpal bone, the distal part including a stem and an insert extending into a proximal end of the stem, the insert including a flange extending proximal of the proximal end of the stem; andan articulating coupling between the proximal and distal parts, andthe flange including a proximal end surface limiting movement between the proximal part and the distal part.22. The bone joint implant as claimed in claim 21 , wherein the insert is non-metallic and the platform is metallic.23. The bone joint implant as claimed in claim 22 , wherein the proximal end surface of the flange has a concave curvature.24. The bone joint implant as claimed in claim 23 , wherein the platform includes a distal end surface having a convex curvature.25. The bone joint implant as claimed in claim 24 , wherein the flange is annular.26. The bone joint implant as claimed in claim 21 , wherein the articulating coupling is a ball and socket coupling claim 21 , and the proximal part includes the ball claim 21 , and the insert includes the socket.27. The bone joint implant as claimed in claim 26 , wherein the ball extends distally of the flange.28. A bone joint implant for a mammalian first carpometacarpal joint claim 26 , comprising:a proximal part configured for translational motion on the trapezium ...

METACARPAL ROD ANCHOR FOR A TRAPEZOMETACARPAL PROSTHESIS

In one embodiment, the present invention is an anchoring rod that is elongated and tapered, the rod extends from a distal end toward a proximal end, the shape including a palmate side, a dorsal side and lateral sides, is the shape being flared on its palmate side without flaring on its dorsal side and flares on its lateral sides so as to form a flared proximal portion, said flared proximal portion having a substantially trapezoidal cross-section, with a dorsal face larger than the palmate face. 1. A metacarpal anchoring rod , particularly for a trapezo-metacarpal prosthesis , comprising an elongated and tapered shape extending from a distal end toward a proximal end , the shape including a palmate side , a dorsal side and lateral sides , is the shape being flared on its palmate side without flaring on its dorsal side and flares on its lateral sides so as to form a flared proximal portion , said flared proximal portion having a substantially trapezoidal cross-section , with a dorsal face larger than the palmate face.2. The rod according to claim 1 , wherein said palmate face has a curvature extending from an area near its distal end up to the edges of its proximal end.3. The rod according to claim 2 , wherein the shape has a rounded boss on its palmate side claim 2 , in proximity to its distal end.4. The rod according to one of claim 1 , wherein the proximal side of said flared proximal portion includes more than one rounded ridge situated between the dorsal claim 1 , palmate and lateral faces.5. The rod according to claim 4 , wherein the rounded ridges which separate each lateral face and the palmate face rejoin one another on the palmate side of the anchoring rod claim 4 , such that said palmate face has claim 4 , seen in cross-section claim 4 , a rounded shape on the proximal side of said flared proximal portion.6. The rod according to one of claim 1 , wherein said lateral faces include grooves claim 1 , wherein each groove delimits claim 1 , on its side turned ...

HYDROGEL ARTHROPLASTY DEVICE

An arthroplasty device is provided having an interpenetrating polymer network (IPN) hydrogel that is strain-hardened by swelling and adapted to be held in place in a joint by conforming to a bone geometry. The strain-hardened IPN hydrogel is based on two different networks: (1) a non-silicone network of preformed hydrophilic non-ionic telechelic macromonomers chemically cross-linked by polymerization of its end-groups, and (2) a non-silicone network of ionizable monomers. The second network was polymerized and chemically cross-linked in the presence of the first network and has formed physical cross-links with the first network. Within the IPN, the degree of chemical cross-linking in the second network is less than in the first network. An aqueous salt solution (neutral pH) is used to ionize and swell the second network. The swelling of the second network is constrained by the first network resulting in an increase in effective physical cross-links within the IPN. 1. A cartilage replacement prosthesis having a first surface and a lubricious second surface , the prosthesis comprising a covalently cross-linked hydrophilic polymer network and a polyurethane network , the hydrophilic polymer network forming a composition gradient within the polyurethane network such that the hydrophilic polymer network content of the prosthesis is at a maximum at the second surface and decreases with distance from the second surface towards the first surface , the prosthesis comprising polyurethane at all distances from the second surface to the first surface , the prosthesis comprising water , wherein the water forms a continuous hydration gradient within the hydrophilic polymer network and the polyurethane network.2. The prosthesis of wherein the covalently cross-linked hydrophilic polymer network comprises an ionic polymer network.3. The prosthesis of wherein the ionic polymer network comprises carboxylic acid groups and/or sulfonic acid groups.4. The prosthesis of wherein the ionic ...

TRAPEZIOMETACARPAL JOINT IMPLANT AND ASSOCIATED METHODS

A trapeziometacarpal joint implant includes a body defining a median plane, a metacarpal joint surface, and a trapezium joint surface. A first central region of the metacarpal joint surface is situated on an opposite side of the median plane from a second central region of the trapezium joint surface. The first and second central regions correspond to profiles of a first axial segment and a second axial segment, respectively. The first and second axial segments are one of a cylinder, a cone and a torus and are centered on a first axis and a second axis, respectively, where the first and second axes, as projected on the median plane, are substantially perpendicular to each other. 1. (canceled)2. A method of interposing an implant in a trapeziometacarpal joint , the method comprising:accessing an articular area between a metacarpal and a trapezium of a patient; andpositioning the implant in the articular area between the metacarpal and trapezium of the patient, the implant defining a median plane, a metacarpal joint surface, and a trapezium joint surface, the metacarpal joint surface having a first central region and the trapezium joint surface having a second central region, the first central region being situated on an opposite side of the median plane from the second central region, the first and second central regions corresponding to profiles of a first axial segment and a second axial segment, respectively, the first and second axial segments being one of a cylinder, a cone and a torus and being centered on a first axis and a second axis, respectively, the first and second axes, as projected on the median plane, being substantially perpendicular to each other; andorienting the implant in the articular area such that the metacarpal joint surface of the implant is directed toward the metacarpal and the trapezium joint surface of the implant is directed toward the trapezium.3. The method of claim 1 , further comprising applying a tensile force in a longitudinal ...

Resorptive Intramedullary Implant Between Two Bones or Two Bone Fragments

The invention relates to a resorptive intramedullary implant between two bones or two bone fragments. The implant includes a single-piece body () having a generally elongate shape and having, at each end, areas for anchoring to the bone portions in question, characterized in that one of said areas (A) has a cylindrical cross-section while the other area (A) has a flat cross-section.

IMPLANT FOR FUSION BETWEEN ADJACENT BONE BODIES

The invention relates to three-dimensional implants to facilitate fusion between two adjacent bone bodies and methods of manufacture thereof. 1. A three-dimensional implant for fusing two adjacent bone bodies , comprising:a body;at least one raised ridge along at least one surface of the body; anda raised stop along a length of the body, wherein the body, the at least one raised ridge, and the raised stop comprises at least a biocompatible material.2. The three-dimensional of claim 1 , wherein the raised stop is at an approximate midline of the body of the implant.3. The three-dimensional of claim 1 , wherein the raised stop is at approximately one third of a length of the body of the implant.4. The three-dimensional of claim 1 , wherein the at least one raised ridge is irregularly spaced on the body of the implant.5. The three-dimensional of claim 1 , wherein the at least one raised ridge is regularly spaced on the body of the implant.6. The three-dimensional implant of claim 1 , wherein the implant is angled at the raised stop.7. The three-dimensional implant of claim 6 , wherein an angle of the implant at the raised stop is between about 0 degrees to about 15 degrees.8. The three-dimensional implant of claim 7 , where the cross-sectional area of the implant on one side of the raised stop may be the same or greater than the cross sectional area of the implant on the other side of the raised stop.9. The three-dimensional implant of claim 1 , wherein a material of the implant is bone.10. The three-dimensional implant of claim 9 , wherein the bone comprises at least one of cortical bone claim 9 , and cancellous bone.11. The three-dimensional bone implant of claim 9 , wherein the bone is fully demineralized.12. The three-dimensional bone implant of claim 9 , wherein the bone is partially demineralized.13. The three-dimensional bone implant of claim 9 , wherein the bone is fully mineralized.14. The three-dimensional bone implant of claim 9 , wherein the bone is at ...

PROSTHESIS

A prosthesis for primary artrodhesis can be used for artroplasty and a prosthesis for artroplasty comprises members for artrodhesis. The prosthesis () for primary artrodhesis comprises a locking member () with an attachment portion () which is insertable into a hole () in a first attachment member () of the prosthesis for location of the locking member therein, and a lockable member () integral with a second attachment member () of the prosthesis. The lockable member () is configured for adjustable setting thereof relative to the locking member () and for fixation thereof, in set position, to the locking member. Alternatively, the lockable member comprises an attachment portion which is insertable into a hole in the second attachment member for location of the lockable member therein. At the prosthesis for artroplasty, the hole in the first screw-like attachment member is partly configured to define a press fit with an attachment pin of a socket member and partly threaded to permit, after removal of the socket member, during artrodhesis, securing by screwing in the hole of the locking member for cooperation with a lockable member which is configured for adjustable setting thereof relative to the locking member and for fixation thereof, in set position, to the locking member. 1. Prosthesis for replacement of a Joint (arthroplasty) ,{'b': 1', '2', '3, 'wherein the prosthesis () comprises two prosthesis members (, ) which each is configured for attachment thereof to at least one of the bones at the Joint,'}{'b': 2', '4', '3', '6, 'wherein one of the prosthesis members () comprises a first screw-like attachment member () which is configured for location in at least one of the bones at the joint and the other prosthesis member () a second screw-like attachment member () which is configured for location in at least one other bone at the joint, and'}{'b': 2', '6', '3', '7, 'wherein said one prosthesis member () comprises a socket member () and said other prosthesis member ...

CARPOMETACARPAL (CMC) IMPLANTS AND METHODS

Implants suitable for use in a carpometacarpal joint includes an upper surface, a lower surface, and sidewalls extending between the upper surface and the lower surface. The implant includes hydrogel material such as polyvinyl alcohol (PVA) hydrogel. Kits can include systems for preparing an implantation site, creating a cavity, and/or deploying the implant. Methods of treating a carpometacarpal joint include deploying an implant in a recess in a carpometacarpal bone. 1. An implant comprising: [ a first peak;', 'a second peak;', 'a first trough laterally between the first peak and the second peak; and', 'a second trough laterally between the first peak and the second peak, the first peak laterally between the first trough and the second trough, the second peak laterally between the first trough and the second trough;, 'an upper surface comprising a saddle shape including, 'a planar lower surface opposite the upper surface; and', 'sidewalls extending between the upper surface and the lower surface., 'a hydrogel body comprising2. The implant of claim 1 , wherein the upper surface is contoured to correspond to an outer surface of a trapezium.3. The implant of claim 1 , wherein the body has a diameter between 4 mm and 8 mm.4. The implant of claim 1 , configured to be placed in a carpometacarpal joint.5. The implant of claim 1 , wherein the lower surface is configured to be placed in a cavity in a first metacarpal bone and wherein the upper surface is configured to abut a trapezium.6. The implant of claim 1 , wherein a distance between at least one of the first peak and the second peak and the planar lower surface is between 10% and 20% greater than a distance between at least one of the first trough and the second trough and the planar lower surface. The present application is a divisional application of co-pending U.S. patent Application Ser. No. 15/085,796, filed on Mar. 30, 2016, which claims priority benefit of U.S. Provisional Patent App. No. 62/141,186, filed on ...

MEDICAL ARTHRODESIS IMPLANT

The medical implant () according to the present invention comprises a first, generally elongate portion () extending along the longitudinal axis A, intended to be inserted into the first bone (P) and comprising first attachment means (), and a second, also elongate, portion () following another longitudinal axis B, intended to be inserted into the second bone (P) and comprising second attachment means (), wherein said first and second portions () are connected together via a connecting bridge () which is centered about the orthonormal axes X, Y, Z of said implant (), providing for at least one axial offset of the second portion () with respect to the first portion () such that the longitudinal axis B of the second portion () is positioned in at least one direction forming an angle (α) relative to the longitudinal axis A of the first portion () and is offset by at least a certain distance along at least one of the axes XX′, YY′ and ZZ′ of the connecting bridge () in order to avoid any offset between the outer upper portions of the first bone (P) and the second bone (P). 11122012430234203040401302030204021. Medical implant () intended to allow bone fusion between a first bone (P) and a second bone (P) , the said implant comprising a first , elongated part () , extending along the longitudinal axis A , intended to be inserted into the first bone (P) and comprising first attachment means () and a second , also elongated part () on another longitudinal axis B , intended to be inserted into the second bone (P) and comprising second attachment means () , said first and second parts ( , ) being connected by a connecting bridge () , characterized in that the said connecting bridge () is centered around orthonormal axes X , Y , Z of the said implant () , creating at least one axial offset of the second part () with regard to the first part () so that the longitudinal axis B of the second part () is positioned in at least one direction , titled at an angle (α) with regard to ...

BONE JOINT IMPLANTS

Bone joint implants are described herein. The bone joint implants may comprise a metallic proximal platform configured for translational motion on the trapezium bone; a distal stem configured for intramedullary engagement with an end of the first metacarpal bone; an articulating coupling between the proximal platform and distal stem; and a proximal non-metallic wear surface and a distal non-metallic wear surface. 1. A bone joint implant for a mammalian first carpometacarpal joint , comprising:a metallic proximal platform configured for translational motion on the trapezium bone;a distal stem configured for intramedullary engagement with an end of the first metacarpal bone; andan articulating coupling between the proximal platform and distal stem, the articulating coupling including one or more wear members forming a proximal non-metallic wear surface and a distal non-metallic wear surface; anda proximal non-metallic wear surface and a distal non-metallic wear surface.2. The bone joint implant as claimed in claim 1 , wherein the proximal non-metallic wear surface forms a buffer surface that prohibits contact between the proximal platform and the stem during articulation.3. The bone joint implant as claimed in claim 1 , wherein the proximal non-metallic wear surface includes a concave curvature.4. The bone joint implant as claimed in claim 1 , wherein the proximal platform includes a distal end surface having a convex curvature.5. The bone joint implant as claimed in claim 1 , wherein the proximal non-metallic wear surface forms an annular surface.6. The bone joint implant as claimed in claim 1 , wherein the distal non-metallic wear surface is spherically shaped.7. The bone joint implant as claimed in claim 1 , further including a unitary non-metallic wear member claim 1 , and the proximal non-metallic wear surface and the distal non-metallic wear surface are formed on the unitary wear member.8. The bone joint implant as claimed in claim 7 , wherein the unitary non- ...

Artificial joint

Artificial human joint with reduced friction between its articulated joint components (10, 18) by virtue of lubricating layer of a ferrofluid (16) retained between the components. The layer is constantly retained in place by magnetic field produced by magnetic insert (12) located within at least one of the joint components.

Implant with electrical transponder marker

A passive transponder may be encoded with a number or code of up to 64 binary bits and then mounted to virtually any prosthesis implanted in a human, such as a breast implant. After implantation, the transponder's code may be conveniently read with a hand held electromagnetic reader which may merely be brought within proximity of the transponder. The encoded transponder may thus be read in a non-invasive procedure and without the use of any sophisticated or potentially harmful medical equipment or technology such as X-ray. The information encoded in the transponder may correspond to patient demographics and implant data to aid in tracking the implant's manufacturer and use for medical as well as legal reasons.

Finger joint prosthesis comprises a ball-and-socket joint in which the rotatable part is a ball-like disk with a peripheral opening in which a distal shaft extension is borne in a movable manner

Finger joint prosthesis comprises a ball-and-socket joint in which the rotatable part is a ball-like disk (8) whose side surfaces each have a groove (9) for assembling the joint and a hole (10) for engaging the disk on lugs on the side surfaces of the socket (3) and the disk has a peripheral opening in which an extension (7) of the distal shaft is borne in a movable, especially longitudinally movable, manner. Finger joint prosthesis comprises two halves that can be joined together, each comprising an anchoring shaft for insertion into the medullary canal of the proximal or distal bone, where the proximal shaft has a forked socket with an opening for joining the halves together in a mounting position and the distal shaft has a rotatable part and the socket has two side surfaces that are parallel to the longitudinal axis of the proximal shaft and have bearings for receiving the rotatable part. The rotatable part is a ball-like disk (8) whose side surfaces each have a groove (9) for assembling the joint and a hole (10) for engaging the disk on lugs on the side surfaces of the socket (3) and the disk has a peripheral opening in which an extension (7) of the distal shaft is borne in a movable, especially longitudinally movable, manner.

Artificial joint

An artificial joint for implantation in humans and animals, the joint comprising a joint body (305) arranged between two base elements (301,302) which are adapted to be connected to adjoining bone parts. The two base elements comprises horizontal and vertical retaining members, respectively, that hold the joint body between them. The joint body comprises curved surfaces (306) arranged to make sliding contact to corresponding curved surfaces (325) of at least one base element. The joint body this way distributes the applied forces over a large surface to withstand the load initiated by the patient. The joint body is kept into position using pins (307,308,310) held by retaining members at the base elements. The angle of motion can be predetermined by the design of the implant body to mimic the movement of a normal finger.

Finger joint prosthesis

Arthroplasty implant

Computer-assisted surgery planner and intra-operative guidance system

An apparatus for facilitating the implantation of an artificial component in one of a hip joint, a knee joint, a hand and wrist joint, an elbow joint, a shoulder joint, and a foot and ankle joint. The apparatus includes a pre-operative geometric planner and a pre-operative kinematic biomechanical simulator in communication with the pre-operative geometric planner.

System and method for prosthetic fitting and balancing in joints

Artificial joints with magnetic attraction or repulsion

An artificial joint for implantation into the living body comprises a head portion adapted to be anchored in one bone of the body and a socket portion adapted to be anchored in another bone. One of the head and socket portions includes a permanent magnet and the other portion either a magnetizable element or another permanent magnet. The two interacting magnetic elements may be polarized for either attraction or repulsion. The head and socket portions are shaped to permit translatory movements relative to each other in addition to rotary movements of the head portion about at least one axis of rotation.

Prosthesis for part of a joint, with an expandable shaft

The invention relates to a prosthesis for part of a joint, in particular for a finger joint, comprising either a proximal or distal component and a shaft that points away from this component and is to be fitted in a bone. According to the invention, the shaft (4) is designed at least partially as an expansion sleeve (7).

Joint prosthetic with an anti-twist device

The prosthesis (1) has a proximal component (2) or a distal component and a shank (4) that is supported in bone by the component, where the shank is rotationally symmetric. The shank is formed with a fin-like anti-rotating unit (8), which is arranged on a lateral surface (6), and radially extends from the lateral surface. The anti-rotating unit partially extends in a longitudinal direction of the shank, where the shank is made of plastic. The anti-rotating unit and the shank are formed as a single part, where the anti-rotating unit is formed to be thicker than the shank.

Polymeric joint complex and methods of use

The invention describes a variety of implantable artificial joint complexes adapted for implantation within a target joint space within a human body. The joint complexes comprise: an expandable joint segment adapted to fit within the target joint space; and at least one of a first cannulated anchor adapted to engage the expandable joint segment and adapted to engage a bony structure adjacent the target joint space; and a second anchor adapted to engage the expandable joint segment and adapted to engage a bony structure adjacent a target joint space. The invention also discloses methods of implanting a patient specific artificial joint complex. The methods include the steps of: accessing a target joint space by creating an access hole through an adjacent bony structure; inserting a joint complex device having a cannulated anchor and an expandable joint segment through the access hole with the expendable joint segment being positioned between the surfaces forming the joint; injecting material into the expandable joint segment; and sealing access to the target joint space.

joint prosthesis

Gelenkprothese, vorzugsweise für ein Fingergrundgelenk, bestehend aus einem Drehgelenk und zwei Verankerungsstegen, wobei die Verankerungsstege als profilierte Markraumstifte (1, 2) ausgebildet sind und an einem Markraumstift (2) ein schalenförmiger Reiter (8) und zentrisch dazu ein kugelförmiges Teil (7) befestigt sind, dadurch gekennzeichnet, daß der Reiter kugelkalottenförmig ausgebildet ist und an dem anderen Markraumstift (1) eine geneigte Teilkugel (5) befestigt ist, die einen Schlitz und einen kugelförmigen Hohlraum aufweist. Joint prosthesis, preferably for a basic finger joint, consisting of a swivel joint and two anchoring webs, the anchoring webs being designed as profiled medullary canal pins (1, 2) and a bowl-shaped tab (8) on a medullary canal pin (2) and a spherical part (7) centrally to it are fastened, characterized in that the rider is designed in the form of a spherical cap and an inclined partial ball (5) is fastened to the other medullary canal pin (1) and has a slot and a spherical cavity.