МЕДИЦИНСКОЕ УСТРОЙСТВО И СПОСОБ

FIELD: medicine. SUBSTANCE: group of inventions relates to medicine. A prosthesis receptor is made in the form of a cup, which has the upper first part and the lower second part. The said first and second parts have different radii. Centres of the radii of the first and second parts are located from each other at the first distance, measured along the butt end edge of the cup, and at the second distance, measured along the cup axis. The system of prosthesis elements contains the said receptor and a head for connection with the receptor. EFFECT: inventions provide the prevention of a possibility of distortion of the head spherical surface and impairment of properties of the supporting surface. 21 cl, 12 dwg

Orthopaedic implant having an articulating surface with a conforming and translational surface

KUENSTLICHES HUEFTGELENK.

KUENSTLICHE HUEFTGELENKSPFANNE.

Endoprosthetic bone joint devices

An endoprosthetic bone joint device of ball-and-socket form has a socket component with a compound concave surface therein including a cup bounded by an annular trough, the co-operating ball normally seating in the cup but being alternatively seatable in the trough when dislocation would otherwise occur.

Prosthesis for cervical and lumbar spine

The present invention relates to an intervertebral disc prosthesis for the total replacement of an intervertebral disc of the cervical or lumbar spine. The prosthesis provided by the invention is intended for coupled physiological motion within the disc space. The design of the disclosed prosthesis is based on an inlay positioned within the articulation area of two adjacent sliding partners and provides the advantage of comprising a ball and socket shaped articulation area, which enables limitation of rotation around the sagittal, frontal and longitudinal axis. The inlay is protected against luxation due to its position within a recess of one of the adjacent sliding partners. An additional protuberance going through the inlay is protecting against luxation of the adjacent sliding.

МЕДИЦИНСКОЕ УСТРОЙСТВО И СПОСОБ

1. Приемник для вмещения сопрягаемого с ним элемента, содержащий:первую часть, которой придана форма, обеспечивающая ее соприкосновение с сопрягаемым элементом при нормальной эксплуатации;вторую часть, которой придана форма, обеспечивающая отсутствие соприкосновения с сопрягаемым элементом при нормальной эксплуатации, отличающийся тем, что первая часть имеет несферическую поверхность.2. Приемник для вмещения сопрягаемого с ним элемента, содержащий:первую часть, которой придана форма, обеспечивающая ее сопряжение с сопрягаемым элементом при нормальной эксплуатации;вторую часть, которой придана форма, обеспечивающая отсутствие сопряжения с сопрягаемым элементом при нормальной эксплуатации, причем первая часть имеет несферическую поверхность, которой придана форма, обеспечивающая возможность протекания текучей среды между приемником и сопрягаемым с ним элементом.3. Приемник по п.1 или 2, в котором указанная первая часть дополнительно имеет сферическую поверхность.4. Приемник для вмещения сопрягаемого с ним элемента, содержащий:первую часть, которой придана форма, обеспечивающая ее соприкосновение с сопрягаемым элементом при нормальной эксплуатации;вторую часть, которой придана форма, обеспечивающая отсутствие соприкосновения с сопрягаемым элементом при нормальной эксплуатации, причем первая часть имеет асимметричную поверхность.5. Приемник для вмещения сопрягаемого с ним элемента, содержащий:первую часть, которой придана форма, обеспечивающая ее сопряжение с сопрягаемым элементом при нормальной эксплуатации;вторую часть, которой придана форма, обеспечивающая отсутствие сопряжения с сопрягаемы�

HIP JOINT PAN

SIX DEGREE SPINE STABILIZATION DEVICES AND METHODS

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

KUGEL- UND PFANNE-GELENKPROTHESE MIT GERINGEM VERSCHLEISS

MEDICAL DEVICE AND METHOD

A receptacle for receiving a mating member in an orthopaedic joint, wherein the receptacle comprises: a first portion shaped so as to contact with the mating member, in normal use; a second portion shaped so as to not contact with the mating member, in normal use, wherein the first portion comprises a non-spherical surface. A mating member for being received by a receptacle, wherein the mating member comprises: a first portion shaped so as to contact with the receptacle, in normal use; a second portion shaped so as to not contact with the receptacle, in normal use, wherein the first portion comprises a non-spherical surface. Also disclosed are receptacles and heads of generally elliptical shape.

ORTHOPAEDIC IMPLANT HAVING AN ARTICULATING SURFACE WITH A CONFORMING AND TRANSLATIONAL SURFACE

The invention is directed to an orthopaedic implant for implantation into a bone at a joint. The orthopaedic implant 10 includes an articulating surface 20 f or mating with a complementary implant 30. The orthopaedic implant includes a body 12 defining the articulating surface. The articulating surface 20 includes a conforming surface 22 bounded by a translational surface 24. The conforming surface 22 allows rotational movement between the articulating surface and the complementary implant, and the translational surface 24 allows rolling and translational movement between t he articulating surface and the complementary implant. The conforming surface 22 is tangent at a periphery thereof to the translational surface 24.

prótese de disco intervertebral

KUENSTLICHES HIP JOINT

KUENSTLICHES HUEFTGELENK

KUENSTLICHES HUEFTGELENK

ARTIFICIAL HIP JOINT

ARTIFICIAL HIP JOINT The invention relates to an artificial hip joint, in which the surfaces of both the socket and the ball of the joint are in the form of rotational bodies (rotational surfaces) deviating from the normal spherical shape. The rotational surfaces are in the form of Pascal's curve or screw rather than being spherical. In addition, provision is made such that an angular deviation .alpha. is present between the axis of the femoral throat of the thigh and the rotary axis of the ball of the joint when viewed from the top, such deviation preferably equal to 10.7.degree. ? 3.degree..

FEMORAL PROSTHESIS CERAMIQUE/CERAMIQUE OF SMALL DIAMETER

Orthopädisches Implantat mit einer von einer translatorischen Teilfläche umgebenen angepassten Teilfläche bestehenden Gelenkfläche

Orthopaedic implant having an articulating surface with a conforming area surrounded by a translational area

Orthopaedic implant having an articulating surface with a conforming and translational surface

FEMORAL PROSTHESIS CERAMIQUE/CERAMIQUE OF SMALL DIAMETER

Une prothèse fémorale comporte une tête fémorale (11) adaptée à être emmanchée sur une tige fémorale (12) destinée à être solidarisée à un fémur d'un patient, et une cupule (13) destinée à être solidarisée au bassin de ce patient, la tête étant montée en sorte de pouvoir glisser en rotation dans une cavité ménagée à l'intérieur de la cupule, cette tête fémorale étant au moins dans sa partie extérieure réalisée en un matériau céramique et ayant une surface extérieure sphérique de diamètre sensiblement égal à 22 mm, et cette cupule étant au moins dans sa partie interne réalisée en un matériau céramique et ayant une surface interne sphérique de diamètre sensiblement égal à 22 mm.

Aspherical hip bearing couple

A joint prosthesis device (10) comprises a head (14) configured to fit within a cup (12). The cup includes a concave cup surface (22) defined by at least one radius of curvature RC. The head includes a convex head surface (24) defined by at least one radius of curvature RH. The convex head surface is configured to engage the concave cup surface. The convex head surface provides an articulation zone (A) where the head surface engages the cup surface. RC differs from RH in the articulation zone by a first amount. The convex head surface also provide a peripheral zone (P) outside of the articulation zone. RC differs from RH in the peripheral zone by a second amount that is greater than the first amount. The peripheral zone generally extends over an area subtended by a minimum angle having a vertex (33) at a centre of the head.

HÜFTGELENKPFANNE

PROSTHETIC DEVICES

Acetabular cup

LOW-WEAR BALL AND CUP JOINT PROSTHESIS

A ball (14) and cup (18) prosthesis is provided with articulating metal surfaces (25, 24), the surfaces (25, 24) having an area of intimate contact () in which the surfaces (25, 24) are formed on radii (R3, R1) which differ by at most 50 micrometers. The area of intimate contact () has a surface area that ranges from 0.12'pi'R32 to 1.65'pi'R32, and the centerline average surface roughness of the metal articulating surfaces (25, 24) in the area of intimate contact () preferably is not greater than 0.1 micrometers.

Non-spherical ball and socket joint

A receptacle for receiving a mating member, wherein the receptacle comprises: a first portion shaped so as to contact with the mating member, in normal use; a second portion shaped so as to not contact with the mating member, in normal use, wherein the first portion comprises a non-spherical surface. A mating member for being received by a receptacle, wherein the mating member comprises: a first portion shaped so as to contact with the receptacle, in normal use; a second portion shaped so as to not contact with the receptacle, in normal use, wherein the first portion comprises a non-spherical surface.

ORTHOPAEDIC IMPLANT HAVING AN ARTICULATING SURFACE WITH A CONFORMING AND TRANSLATIONAL SURFACE

The invention is directed to an orthopaedic implant for implantation into a bone at a joint. The orthopaedic implant 10 includes an articulating surface 20 for m ating with a complementary implant 30. The orthopaedic implant includes a body 12 defining the articulating surface. The articulating surface 20 includes a conforming surface 22 bounded by a translational surface 24. The conforming surface 22 allows rotatio nal movement between the articulating surface and the complementary implant, and the translational surface 24 allows rolling and translational movement between the a rticulating surface and the complementary implant. The conforming surface 22 is tangent at a periphery thereof to the translational surface 24.

Six Degree Spine Stabilization Devices and Methods

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

Medical device and method

Orthopaedic implant

An orthopaedic implant for implantation into a bone at a joint. The orthopaedic implant 10 includes an articulating surface 20 for mating with a complementary implant (30). The orthopaedic implant includes a body 12 defining the articulating surface. The articulating surface 20 includes a conforming surface 22 bounded by a translational surface 24. The conforming surface 22 allows rotational movement between the articulating surface and the complementary implant, and the translational surface 24 allows rolling and translational movement between the articulating surface and the complementary implant. The conforming surface 22 is tangent at a periphery thereof to the translational surface 24.

Universal disc prosthesis

A disc prosthesis designed to effectively replace a damaged intervertebral disc, enabling the various normal movements between two adjacent vertebral bodies and controlling these movements and their extent within the same physiological limits that determine the relative motions of two adjacent vertebrae separated by a healthy intervertebral disc.

Method of Implanting Aspheric Hip Bearing Couple

In one embodiment a method of implanting a prosthetic includes implanting a first member including a concave articulation surface portion defined by a first radius of curvature in a first bone, implanting in a second bone a second member including a first convex articulation surface portion defined by a second radius of curvature and a second convex articulation surface defined by a third radius of curvature, wherein the second convex articulation surface is defined by the lemon portion of a spindle torus and each of the second radius of curvature and the third radius of curvature has a length that is different from the length of the first radius of curvature by less than 0.05 millimeters and wherein the origin of the second radius of curvature is not coincident with the origin of the third radius of curvature, and bringing the first member into slidable contact with the second member

Orthopaedic implant having an articulating surface with a conforming and translational surface

The invention is directed to an orthopaedic implant for implantation into a bone at a joint. The orthopaedic implant 10 includes an articulating surface 20 for mating with a complementary implant 30. The orthopaedic implant includes a body 12 defining the articulating surface. The articulating surface 20 includes a conforming surface 22 bounded by a translational surface 24. The conforming surface 22 allows rotational movement between the articulating surface and the complementary implant, and the translational surface 24 allows rolling and translational movement between the articulating surface and the complementary implant. The conforming surface 22 is tangent at a periphery thereof to the translational surface 24.

Non-spherical ball and socket joint

A receptacle for receiving a mating member, wherein the receptacle comprises: a first portion shaped so as to contact with the mating member, in normal use; a second portion shaped so as to not contact with the mating member, in normal use, wherein the first portion comprises a non-spherical surface. A mating member for being received by a receptacle, wherein the mating member comprises: a first portion shaped so as to contact with the receptacle, in normal use; a second portion shaped so as to not contact with the receptacle, in normal use, wherein the first portion comprises a non-spherical surface.

NON-SPHERICAL BALL AND SOCKET JOINT

Artificial acetabular cup

The socket is made with a bowl having a spherical cap in the polar region and a part-spherical section which extends from the spherical cap on a larger diameter. The two sections join together at a distance from the top of the bowl socket which is 1/3 the diameter of the spherical cap while the diameter of the part-spherical section is from 1.02 to 1.10 times the diameter of the spherical cap. The diameters of the spherical cap and the part-spherical section intersect the axis of symmetry of the socket body, one on the equatorial plane and the other below the equatorial plane.

Orthopädisches Implantat mit einer von einer translatorischen Teilfläche umgebenen angepassten Teilfläche bestehenden Gelenkfläche

SIX DEGREE SPINE STABILIZATION DEVICES AND METHODS

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

Aspheric hip bearing couple

A joint prosthesis device comprises a head configured to fit within a cup. The cup includes a concave cup surface defined by at least one radius of curvature RC. The head includes a convex head surface defined by at least one radius of curvature RH. The convex head surface is configured to engage the concave cup surface. The convex head surface provides an articulation zone where the head surface engages the cup surface. RC differs from RH in the articulation zone by a first amount. The convex head surface also provide a peripheral zone outside of the articulation zone. RC differs from RH in the peripheral zone by a second amount that is greater than the first amount. The peripheral zone generally extends over an area subtended by a minimum angle having a vertex at a center of the head.

Aspheric hip bearing couple

A joint prosthesis device comprises a head configured to fit within a cup and in one embodiment includes a first member for attachment to a first bone in a joint and including a first articulation surface portion defined by a first radius of curvature and a second member for attachment to a second bone in the joint and including a second articulation surface portion defined by a second radius of curvature and a third articulation surface defined by a third radius of curvature, wherein each of the second radius of curvature and the third radius of curvature has a length that is different from the length of the first radius of curvature by less than 0.05 millimeters and wherein the origin of the second radius of curvature is not coincident with the origin of the third radius of curvature.

HÜFTGELENKPFANNE

Artificial hip joint

The socket is made with a bowl having a spherical cap in the polar region and a part-spherical section which extends from the spherical cap on a larger diameter. The two sections join together at a distance from the top of the bowl socket which is 1/3 the diameter of the spherical cap while the diameter of the part-spherical section is from 1.02 to 1.10 times the diameter of the spherical cap. The diameters of the spherical cap and the part-spherical section intersect the axis of symmetry of the socket body, one on the equatorial plane and the other below the equatorial plane.

LOW-WEAR BALL AND CUP JOINT PROSTHESIS

Artificial hip joint

The invention relates to an artificial hip joint, in which the joint surfaces 3, 4 as well as those of the joint cup 2 and the joint head 1, are designed as rotational bodies (rotational surfaces) deviating from a spherical shape. A further invention proposes that there should be, between the axis of the femoral neck 11 and the axis of rotation 10 of the joint head 1 (seen in the plan view), an angular deviation , preferably of 10.7° ± 3°. ...

Orthopädisches Implantat mit einer von einer translatorischen Teilfläche umgebenen angepassten Teilfläche bestehenden Gelenkfläche

Artificial hip joint

The socket is made with a bowl having a spherical cap in the polar region and a part-spherical section which extends from the spherical cap on a larger diameter. The two sections join together at a distance from the top of the bowl socket which is 1/3 the diameter of the spherical cap while the diameter of the part-spherical section is from 1.02 to 1.10 times the diameter of the spherical cap. The diameters of the spherical cap and the part-spherical section intersect the axis of symmetry of the socket body, one on the equatorial plane and the other below the equatorial plane.

ACETABULAR CUP

Six degree spine stabilization devices and methods

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

TRANSFORAMINAL PROSTHETIC SPINAL DISC APPARATUS

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate.

COMBINED SEMI-LIMITING MULTIPOLAR ARTIFICIAL WRIST JOINT

The present invention discloses a combined semi-limiting multipolar artificial wrist joint, or “semi-limiting bipolar artificial wrist joint”, and be selected and assembled based on the specific pathological conditions of wrist bone destruction. For instance, the metacarpal bone articular surface is shown to be complete and the bone quality is good, and most of the far carpal bones (including small polyangular bones and head bones) can be preserved, while the proximal carpal bones (scaphoid and lunate) and the articular surface of the carpal radius are broken, and the proximal carpal bones are to be excised. The artificial wrist joint can also be assembled in another way, which is called “semi-limiting multipolar artificial wrist joint”, wherein the pathologically damaged double carpal bones are excised to form an inter-matching assembly of palm, wrist and radius joints.

ACETABULAR CUP

A prosthetic joint is described consisting of an acetabular cup (10) and a femoral component having a spherical head (12) of radius R1. The surface (14) of the socket in the acetabular cup (10) is defined by an "alpharabola". The alpharabola geometry is described by: 'alpha'x2 + y2 + z2 = 2R2x, 0 < 'alpha' < 1, where R2 is the desired minimum radius of curvature; x is a Cartesian coordinate representing distance from the point of minimum radius of curvature (30) along the normal to the surface at that point; and y and z are the remaining Cartesian coordinates. The alpharabola surfaces are surfaces of revolution about the x axis. When R2 is less than R1, a pool of fluid (22) is trapped at the pole of the apharabola and there is an annular contact ring (24) between the two surfaces (14, 16) which serves to trap the fluid. When R1 is equal to R2, in place of an annular contact ring (24), there is an enlarged contact area (26). Both arrangements contribute to more effective squeeze film lubrication ...

LOW-WEAR BALL AND CUP JOINT PROSTHESIS

A ball (14) and cup (18) prosthesis is provided with articulating metal surfaces (25, 24), the surfaces (25, 24) having an area of intimate contact () in which the surfaces (25, 24) are formed on radii (R3, R1) which differ by at most 50 micrometers. The area of intimate contact () has a surface area that ranges from 0.12'pi'R32 to 1.65'pi'R32, and the centerline average surface roughness of the metal articulating surfaces (25, 24) in the area of intimate contact () preferably is not greater than 0.1 micrometers.

PROSTHESIS FOR CERVICAL AND LUMBAR SPINE

The present invention relates to an intervertebral disc prosthesis for the total replacement of an intervertebral disc of the cervical or lumbar spine. The prosthesis provided by the invention is intended for coupled physiological motion within the disc space. The design of the disclosed prosthesis is based on an inlay positioned within the articulation area of two adjacent sliding partners and provides the advantage of comprising a ball-and socket shaped articulation area, which enables limitation of rotation around the sagittal, frontal and longitudinal axis. The inlay is protected against luxation due to its position within a recess of one of the adjacent sliding partners. An additional protuberance going through the inlay is protecting against luxation of the adjacent sliding partners.

TRANSFORAMINAL PROSTHETIC SPINAL DISC APPARATUS

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate. 1. A method for stabilizing spinal elements comprising: a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having a protrusion;', 'a second endplate having a first portion and a second portion, the first portion includes a first surface configured to substantially engage with a second vertebral body and a second surface configured to receive the protrusion of the first endplate,', 'wherein the second endplate is formed by coupling the first portion and the second portion,', 'wherein the first endplate includes a first stop and second stop configured to be receiving in a first', 'wherein the second portion includes a first bore hole and a second bore hole for a receiving a portion of the first stop and a portion of the second stop, positioning the intervertebral prosthetic implant between adjacent intervertebral vertebrae., 'providing an intervertebral prosthetic implant comprising2. The method of claim 1 , wherein the upper endplate includes an extension on the first surface.3. The ...

KUENSTLICHES HUEFTGELENK.

KUGEL- UND PFANNE-GELENKPROTHESE MIT GERINGEM VERSCHLEISS

Six degree spine stabilization devices and methods

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

SIX DEGREE SPINE STABILIZATION DEVICES AND METHODS

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

ACETABULAR CUP

A prosthetic joint is described consisting of an acetabular cup (10) and a femoral component having a spherical head (12) of radius R1. The surface (14) of the socket in the acetabular cup (10) is defined by an "alpharabola". The alpharabola geometry is described by: 'alpha'x2 + y2 + z2 = 2R2x, 0 < 'alpha' < 1, where R2 is the desired minimum radius of curvature; x is a Cartesian coordinate representing distance from the point of minimum radius of curvature (30) along the normal to the surface at that point; and y and z are the remaining Cartesian coordinates. The alpharabola surfaces are surfaces of revolution about the x axis. When R2 is less than R1, a pool of fluid (22) is trapped at the pole of the apharabola and there is an annular contact ring (24) between the two surfaces (14, 16) which serves to trap the fluid. When R1 is equal to R2, in place of an annular contact ring (24), there is an enlarged contact area (26). Both arrangements contribute to more effective squeeze film lubrication ...

Aspheric hip bearing couple

A joint prosthesis device comprises a head configured to fit within a cup and in one embodiment includes a first member for attachment to a first bone in a joint and including a first articulation surface portion defined by a first radius of curvature and a second member for attachment to a second bone in the joint and including a second articulation surface portion defined by a second radius of curvature and a third articulation surface defined by a third radius of curvature, wherein each of the second radius of curvature and the third radius of curvature has a length that is different from the length of the first radius of curvature by less than 0.05 millimeters and wherein the origin of the second radius of curvature is not coincident with the origin of the third radius of curvature.

Aspheric hip bearing couple

A joint prosthesis device comprises a head configured to fit within a cup. The cup includes a concave cup surface defined by at least one radius of curvature R_C. The head includes a convex head surface defined by at least one radius of curvature R_H. The convex head surface is configured to engage the concave cup surface. The convex head surface provides an articulation zone where the head surface engages the cup surface. R_C differs from R_H in the articulation zone by a first amount. The convex head surface also provide a peripheral zone outside of the articulation zone. R_C differs from R_H in the peripheral zone by a second amount that is greater than the first amount. The peripheral zone generally extends over an area subtended by a minimum angle having a vertex at a center of the head.

Six degree spine stabilization devices and methods

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

Orthopädisches Implantat mit einer von einer translatorischen Teilfläche umgebenen angepassten Teilfläche bestehenden Gelenkfläche

Six degree spine stabilization devices and methods

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

Artificial hip joint

THREE-MEMBER PROSTHETIC JOINT

A prosthetic joint includes: (a) a first member comprising rigid material and having a perimeter flange defined by an undercut groove, the flange defining a wear-resistant first contact surface having a protruding rim; (b) a second member comprising rigid material and having a perimeter flange defined by an undercut groove, the flange defining a wear-resistant, second contact surface having a protruding rim; and (c) a third member comprising rigid material positioned between the first and second members, the third member defining opposed wear-resistant third and fourth contact surfaces; (d) wherein the first and second contact surfaces bear against the third and fourth contact surfaces, to transfer loads through the member, while allowing pivoting motion between the first and second members; (e) wherein the flanges can deform elastically such that the first and second contact surfaces conform to the third and fourth contact surfaces.

Medical device and method

A receptacle for receiving a mating member in an orthopedic joint, wherein the receptacle comprises: a first portion shaped so as to contact with the mating member, in normal use; a second portion shaped so as to not contact with the mating member, in normal use, wherein the first portion comprises a non-spherical surface. A mating member for being received by a receptacle, wherein the mating member comprises: a first portion shaped so as to contact with the receptacle, in normal use; a second portion shaped so as to not contact with the receptacle, in normal use, wherein the first portion comprises a non-spherical surface. Also disclosed are receptacles and heads of generally elliptical shape.

TRANSFORAMINAL PROSTHETIC SPINAL DISC APPARATUS

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate. 1. An intervertebral prosthetic implant comprising:a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having a concave contact surface and a protrusion;a second endplate having a first portion and a second portion, the first portion includes a first surface configured to substantially engage with a second vertebral body and a second surface configured to receive the second portion,wherein the second endplate is formed by coupling the first portion and the second portion,wherein a cavity is formed between the first portion and the second portion, and within the cavity there is positioned a first stop and a second stop,wherein the second portion includes a first bore hole and a second bore hole for a receiving a portion of the first stop and a portion of the second stop.2. The intervertebral prosthetic implant of claim 1 , wherein the upper endplate includes an extension on the first surface.3. The intervertebral prosthetic implant of claim 1 , wherein the first stop and the second ...

Method for multi-curvature liners for reversed shoulder replacement

A reverse shoulder replacement system including a humeral liner defining a split curvature bearing surface that includes a plurality of curvature regions. The plurality of curvature regions are configured to engage a glenosphere of a glenoid implant individually or in combination to provide an improved fit between the glenosphere and the humeral liner.

Aspherical hip bearing couple

A joint prosthesis device comprises a head configured to fit within a cup. The cup includes a concave cup surface defined by at least one radius of curvature RC. The head includes a convex head surface defined by at least one radius of curvature RH. The convex head surface is configured to engage the concave cup surface. The convex head surface provides an articulation zone where the head surface engages the cup surface. RC differs from RH in the articulation zone by a first amount. The convex head surface also provide a peripheral zone outside of the articulation zone. RC differs from RH in the peripheral zone by a second amount that is greater than the first amount. The peripheral zone generally extends over an area subtended by a minimum angle having a vertex at a centre of the head.

Medical device and method

一种用于在整形外科关节中接纳配合构件的容座，其中容座包括：第一部分，其被成形为在正常使用中与该配合构件接触；第二部分，其被成形为在正常使用中不与该配合构件接触；其中该第一部分包括非球形表面。一种由容座接纳的配合构件，其中该配合构件包括：第一部分，其被成形为在正常使用中与该容座接触；第二部分，其被成形为在正常使用中不与该容座接触；其中该第一部分包括非球形表面。本发明还公开了容座和大体上椭圆形的头部。

Transforaminal Prosthetic Spinal Disc Apparatus

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate.

Artificial hip joint

The invention relates to an artificial hip joint, in which the surfaces of both the socket and the ball of the joint are in the form of rotational bodies (rotational surfaces) deviating from the normal spherical shape. The rotational surfaces are in the form of Pascal's curve or screw rather than being spherical. In addition, provision is made such that an angular deviation α is present between the axis of the femoral throat of the thigh and the rotary axis of the ball of the joint when viewed from the top, such deviation preferably equal to 10.7°±3°.

MULTI-CURVATURE LINERS FOR REVERSED SHOULDER REPLACEMENT

A reverse shoulder replacement system including a humeral liner defining a split curvature bearing surface that includes a plurality of curvature regions. The plurality of curvature regions are configured to engage a glenosphere of a glenoid implant individually or in combination to provide an improved fit between the glenosphere and the humeral liner. 111-. (canceled)11. A method for reverse replacement of a shoulder joint , comprising:inserting a stem of a humeral implant into a humerus;mounting a humeral liner to an end of the stem, wherein the humeral liner defines a split curvature bearing surface including a plurality of curvature regions including at least:a first curvature region having a first curvature, anda second curvature region having a second curvature;mounting a glenoid implant to a glenoid region of a scapula, the glenoid implant including a glenosphere; andpositioning the humeral implant such that at least one of the curvature regions operably engages the glenosphere of the glenoid implant.12. The method of claim 11 , wherein the first curvature is defined by a first radius extending from a first focal point positioned a first distance from an apex;wherein the second curvature is defined by a second radius extending from a second focal point positioned a second distance from the apex.13. The method of claim 12 , wherein the first radius is shorter than the second radius such that the second curvature is shallower than the first curvature.14. The method of claim 12 , wherein the first radius is at least about 75% of the second radius.15. The method of claim 11 , wherein the first focal point is a first distance from an apex of the split curvature bearing surface and the second focal point is a second distance from the apex;wherein the second distance is greater than the first distance.16. The method of claim 11 , wherein the plurality of curvature regions are arranged concentrically such that the second curvature region extends around the first ...

Orthopaedic implant having an articulating surface with a conforming area surrounded by a translational area

The invention is directed to an orthopaedic implant (10) for implantation into a bone (28) at a joint. The orthopaedic implant (10) includes an articulating surface (20) for mating with a complementary implant (30). The orthopaedic implant (10) includes a body (12) defining the articulating surface (20). The articulating surface (20) includes a conforming surface (22) bounded by a translational surface (24). The conforming surface (22) allows rotational movement between the articulating surface (20) and the complementary implant surface (32), and the translational surface (24) allows rolling and translational movement between the articulating surface (20) and the complementary implant surface (32). The conforming surface (22) is tangent at a periphery (36) thereof to the translational surface (24).

Transforaminal prosthetic spinal disc apparatus

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate.

MEDICAL DEVICE AND METHOD

A receptacle for receiving a mating member in an orthopaedic joint, wherein the receptacle comprises: a first portion shaped so as to contact with the mating member, in normal use; a second portion shaped so as to not contact with the mating member, in normal use, wherein the first portion comprises a non-spherical surface. A mating member for being received by a receptacle, wherein the mating member comprises: a first portion shaped so as to contact with the receptacle, in normal use; a second portion shaped so as to not contact with the receptacle, in normal use, wherein the first portion comprises a non-spherical surface. Also disclosed are receptacles and heads of generally elliptical shape.

Orthopaedic implant having an articulating surface with a conforming area surrounded by a translational area

The invention is directed to an orthopaedic implant (10) for implantation into a bone (28) at a joint. The orthopaedic implant (10) includes an articulating surface (20) for mating with a complementary implant (30). The orthopaedic implant (10) includes a body (12) defining the articulating surface (20). The articulating surface (20) includes a conforming surface (22) bounded by a translational surface (24). The conforming surface (22) allows rotational movement between the articulating surface (20) and the complementary implant surface (32), and the translational surface (24) allows rolling and translational movement between the articulating surface (20) and the complementary implant surface (32). The conforming surface (22) is tangent at a periphery (36) thereof to the translational surface (24).

Transforaminal Prosthetic Spinal Disc Apparatus

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate.

For cervical and lumbar prosthesis

Transforaminal prosthetic spinal disc apparatus

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate.

PROSTHESIS FOR CERVICAL AND LUMBAR SPINE

PROSTHETIC JOINT

A prosthetic joint has a central axis and includes: (a) a first member of rigid material and including a body having a cantilevered perimeter flange extending therefrom, the flange defining a wear-resistant, concave first contact surface having a protruding rim and a recessed central portion; and (b) a second member of rigid material with a wear-resistant, convex second contact surface. The first and second contact surfaces bear directly against each other so as to transfer axial and lateral loads from one of the members to the other, while allowing pivoting motion between the two members. The flange is shaped and sized so as to deform elastically and permit the first contact surface to conform in an irregular shape to the second contact surface when the joint is placed under a predetermined load.

Aspherical hip bearing component

A joint prosthesis device comprises a head configured to fit within a cup. The device includes a first member for attachment to a first bone in a joint having a first articulation surface portion defined by a first radius of curvature, and a second member for attachment to a second bone in the joint and having a second articulation surface portion defined by a second radius of curvature and a third articulation surface defined by a third radius of curvature. Each of the second and third radii of curvature has a length that is different from the length of the first radius of curvature by less than 0.05 mm, and the origin of the second radius of curvature is not coincident with the origin of the third radius of curvature.

Artificial hip joint

Aspherical hip bearing component

Aspheric hip bearing couple

A joint prosthesis device comprises a head configured to fit within a cup and in one embodiment includes a first member for attachment to a first bone in a joint and including a first articulation surface portion defined by a first radius of curvature and a second member for attachment to a second bone in the joint and including a second articulation surface portion defined by a second radius of curvature and a third articulation surface defined by a third radius of curvature, wherein each of the second radius of curvature and the third radius of curvature has a length that is different from the length of the first radius of curvature by less than 0.05 millimeters and wherein the origin of the second radius of curvature is not coincident with the origin of the third radius of curvature.

Orthopaedic implant having an articulating surface with a conforming and translational surface

The invention is directed to an orthopaedic implant for implantation into a bone at a joint. The orthopaedic implant 10 includes an articulating surface 20 for mating with a complementary implant 30. The orthopaedic implant includes a body 12 defining the articulating surface. The articulating surface 20 includes a conforming surface 22 bounded by a translational surface 24. The conforming surface 22 allows rotational movement between the articulating surface and the complementary implant, and the translational surface 24 allows rolling and translational movement between the articulating surface and the complementary implant. The conforming surface 22 is tangent at a periphery thereof to the translational surface 24.

SIX DEGREE SPINE STABILIZATION DEVICES AND METHODS

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

ARTIFICIAL HIP JOINT

PURPOSE: To eliminate the difficulty on patient's walking and various disorders by constituting the articulate surface of an articulate socket and the articulate surface of an articulate head so as to exhibit the Pascal curves viewed in their meridian sections. CONSTITUTION: The articulate head 1 and the articulate socket 2 are constituted as the body of rotation or plane of rotation. The articulate surface 3 of the articulate socket 2 and the articulate surface 4 of the articulate head 1 have the meridian sections forming the Pascal curves. The meridian section at the articulate surface 4 of the articulate head 1 is constituted as the Pascal curve having a loop. The Pascal curve used in this case is the circle existing only in the part arranged above a segment traversing section 5, i.e., perpendicularly to the axial line of rotation and passing the double points at the Pascal curve. The meridian section at the articulate surface 3 of the articulate socket 2 is the expanded Pascal curve ...

Aspherical hip bearing component

An acetabular cup (200; 230) has an outer surface (202; 232) and an inner surface (204; 234). The inner surface has a spherical cap portion (206; 236) having a centre of curvature (210; 240), and a toroidal portion (212; 242) defined by the outer surface of a torus defined by the rotation of two circles (214, 216; 244, 246), having respective centres (218, 220; 248, 250). The centre of curvature of the spherical cap portion is located between the inner surface of the cup and the plane which is defined by the centres of the circles which define the torus when the circles are rotated.

método e dispositivo médico

Universal joint implant for shoulder

Universal joint implant includes an artificial glenohumeral component having articulating surfaces. The artificial glenohumeral component can include a first portion for articulation against an artificial glenoid surface or natural glenoid of the patient, and second portion(s) for articulation against an artificial humeral surface or resected, natural humerus; and a universal joint connection. The connection includes a yoke to provide for a center of movement generally within or adjacent a volume defined by an upper head of a normal humerus, which otherwise would be resected; and a substantially spheroidal body, at least in part, dissected, yet connected to provide the yoke; a body pivotable with respect to the yoke for providing motion in a first direction; a rotatable glenoid fixing member, rotatably fixable about the artificial glenoid surface or natural or resected glenoid; and a rotatable humeral fixing member, rotatably fixable about the artificial humeral surface or resected humerus ...

Orthopaedic implant having an articulating surface with a conforming area surrounded by a translational area

Transforaminal Prosthetic Spinal Disc Apparatus

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate.

Low wear ball and cup joint prosthesis

PCT No. PCT/US96/17371 Sec. 371 Date Aug. 3, 1998 Sec. 102(e) Date Aug. 3, 1998 PCT Filed Nov. 1, 1996 PCT Pub. No. WO97/16138 PCT Pub. Date May 9, 1997A ball (14) and cup (18) prosthesis is provided with articulating metal surfaces (25, 24), the surfaces (25, 24) having an area of intimate contact ( theta ) in which the surfaces (25, 24) are formed on radii (R3, R1) which differ by at most 50 micrometers. The area of intimate contact ( theta ) has a surface area that ranges from 0.12 pi R32 to 1.65 pi R32, and the centerline average surface roughness of the metal articulating surfaces (25, 24) in the area of intimate contact ( theta ) preferably is not greater than 0.1 micrometers.

Low wear ball and cup joint prosthesis

A ball (14) and cup (18) prosthesis is provided with articulating metal surfaces (25, 24), the surfaces (25, 24) having an area of intimate contact (θ) in which the surfaces (25, 24) are formed on radii (R3, R1) which differ by at most 50 micrometers. The area of intimate contact (θ) has a surface area that ranges from 0.12 πR32 to 1.65 πR32, and the centerline average surface roughness of the metal articulating surfaces (25, 24) in the area of intimate contact (θ) preferably is not greater than 0.1 micrometers.

Universal disc prosthesis

A disc prosthesis designed to effectively replace a damaged intervertebral disc, enabling the various normal movements between two adjacent vertebral bodies and controlling these movements and their extent within the same physiological limits that determine the relative motions of two adjacent vertebrae separated by a healthy intervertebral disc.

Three-member prosthetic joint

A prosthetic joint includes: (a) a first member comprising rigid material and having a perimeter flange defined by an undercut groove, the flange defining a wear-resistant first contact surface having a protruding rim; (b) a second member comprising rigid material and having a perimeter flange defined by an undercut groove, the flange defining a wear-resistant, second contact surface having a protruding rim; and (c) a third member comprising rigid material positioned between the first and second members, the third member defining opposed wear-resistant third and fourth contact surfaces; (d) wherein the first and second contact surfaces bear against the third and fourth contact surfaces, to transfer loads through the member, while allowing pivoting motion between the first and second members; (e) wherein the flanges can deform elastically such that the first and second contact surfaces conform to the third and fourth contact surfaces.

Aspheric Hip Bearing Couple

A prosthetic ball for use in a ball and cup joint system includes a spherical cap articulation portion defined by a first radius of curvature, and a toroidal articulation portion defined by a second radius of curvature having a circular origin such that the toroidal articulation portion is defined by a portion of the inner surface of a spindle torus.

Multi-curvature liners for reversed shoulder replacement

A reverse shoulder replacement system including a humeral liner defining a split curvature bearing surface that includes a plurality of curvature regions. The plurality of curvature regions are configured to engage a glenosphere of a glenoid implant individually or in combination to provide an improved fit between the glenosphere and the humeral liner.

Universal joint implant for shoulder

Universal joint implant includes an artificial glenohumeral component having articulating surfaces. The artificial glenohumeral component can include a first portion for articulation against an artificial glenoid surface or natural glenoid of the patient, and second portion(s) for articulation against an artificial humeral surface or resected, natural humerus; and a universal joint connection. The connection includes a yoke to provide for a center of movement generally within or adjacent a volume defined by an upper head of a normal humerus, which otherwise would be resected; and a substantially spheroidal body, at least in part, dissected, yet connected to provide the yoke; a body pivotable with respect to the yoke for providing motion in a first direction; a rotatable glenoid fixing member, rotatably fixable about the artificial glenoid surface or natural or resected glenoid; and a rotatable humeral fixing member, rotatably fixable about the artificial humeral surface or resected humerus.

Three-member prosthetic joint

A prosthetic joint includes: (a) a first member comprising rigid material and having a perimeter flange defined by an undercut groove, the flange defining a wear-resistant first contact surface having a protruding rim; (b) a second member comprising rigid material and having a perimeter flange defined by an undercut groove, the flange defining a wear-resistant, second contact surface having a protruding rim; and (c) a third member comprising rigid material positioned between the first and second members, the third member defining opposed wear-resistant third and fourth contact surfaces; (d) wherein the first and second contact surfaces bear against the third and fourth contact surfaces, to transfer loads through the member, while allowing pivoting motion between the first and second members; (e) wherein the flanges can deform elastically such that the first and second contact surfaces conform to the third and fourth contact surfaces.

Transforaminal Prosthetic Spinal Disc Apparatus

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate.

Combined semi-limited bipolar or multipolar artificial wrist joint

本实用新型公开了一种组合式半限定双极或多极人工腕关节，是根据腕关节骨破坏的具体病理情况，如显示掌腕骨关节面完整、骨质尚好，可以保留大部分的远排腕骨(累及小多角骨、头状骨)，而近排腕骨(舟状骨及月骨)及腕挠骨关节面破环，及可行近排腕骨切除之选型组装；该人工腕关节还可以做另一种组配方式，即可称作“半限定多极人工腕关节”，可以对病理破坏的双排腕骨切除，形成掌、腕、挠各关节的互配组装，会给术者带来灵活、方便和理想的手术结果。

Artificial hip joint

CERVICAL SPINE DISC PROSTHESIS DEVICE

Prothèse de disque comportant un insert en forme de coussin souple, une première demi-coquille (10a), une seconde demi-coquille (30a), l’insert en forme de coussin souple se positionnant entre lesdites demi-coquilles, caractérisé en ce que une première des demi-coquilles (10a) comporte une première base munie d’une première face (12a) d’accrochage sur une première vertèbre et une couronne (15a) creusée pour former une première coupelle (11a) et pour laquelle une seconde (30b) des demi-coquilles est munie d’une première face d’accrochage sur une seconde vertèbre et d’une seconde face porteuse d’une bordure (33a) entourant une seconde coupelle (31a) lesdites coupelles(11a, 31a) en vis-à-vis recevant respectivement une calotte supérieure (21) et d’une calotte inférieure (23) dudit insert ladite couronne et ladite bordure formant des parois s’emboîtant avec jeu et réalisant des butées de mouvements angulaires et de mouvement de cisaillement entre les demi-coquilles. Figure 1 Disc prosthesis comprising an insert in the form of a flexible cushion, a first half-shell (10a), a second half-shell (30a), the insert in the form of a flexible cushion being positioned between the said half-shells, characterized in that a first of the half-shells (10a) comprises a first base provided with a first face (12a) for attachment to a first vertebra and a crown (15a) hollowed out to form a first cup (11a) and for which a second ( 30b) of the half-shells is provided with a first face for attaching to a second vertebra and with a second face carrying a border (33a) surrounding a second cup (31a) said cups (11a, 31a) screw -à-vis receiving respectively an upper cap (21) and a lower cap (23) of said insert, said crown and said border forming walls fitting together with play and producing stops for angular movements and for shearing movement between the half shells. Figure 1

CERVICAL SPINE DISC PROSTHESIS DEVICE

Prothèse de disque comportant un insert en forme de coussin souple, une première demi-coquille (10a), une seconde demi-coquille (30a), l’insert en forme de coussin souple se positionnant entre lesdites demi-coquilles, caractérisé en ce que une première des demi-coquilles (10a) comporte une première base munie d’une première face (12a) d’accrochage sur une première vertèbre et une couronne (15a) creusée pour former une première coupelle (11a) et pour laquelle une seconde (30b) des demi-coquilles est munie d’une première face d’accrochage sur une seconde vertèbre et d’une seconde face porteuse d’une bordure (33a) entourant une seconde coupelle (31a) lesdites coupelles(11a, 31a) en vis-à-vis recevant respectivement une calotte supérieure (21) et d’une calotte inférieure (23) dudit insert ladite couronne et ladite bordure formant des parois s’emboîtant avec jeu et réalisant des butées de mouvements angulaires et de mouvement de cisaillement entre les demi-coquilles. Figure 1 Disc prosthesis comprising an insert in the form of a flexible cushion, a first half-shell (10a), a second half-shell (30a), the insert in the form of a flexible cushion being positioned between the said half-shells, characterized in that a first of the half-shells (10a) comprises a first base provided with a first face (12a) for attachment to a first vertebra and a crown (15a) hollowed out to form a first cup (11a) and for which a second ( 30b) of the half-shells is provided with a first face for attaching to a second vertebra and with a second face carrying a border (33a) surrounding a second cup (31a) said cups (11a, 31a) screw -à-vis respectively receiving an upper cap (21) and a lower cap (23) of said insert, said crown and said border forming walls fitting together with play and producing stops for angular movements and for shearing movement between the half shells. Figure 1

Orthopedic transplant and its assembly

(57)【要約】 【課題】 骨に関節で移植するための整形外科移植片に 関する。 【解決手段】 本発明の整形外科移植片は相補移植片と 係合する関節形成面を含む。整形外科移植片は関節形成 面を形成する本体を有する。関節形成面は移動面により 囲まれた適合面を含む。適合面は関節形成面と相補移植 片間の回転運動を可能にし、かつ移動面は関節形成面と 相補移植片間の転動および平行移動を可能にする。適合 面はその周辺で移動面と接触している。

Transforaminal prosthetic spinal disc apparatus

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate.

Remaining mobility spinal implant for total artificial disc replacement

一种保留活动性脊椎植入物，其放置于脊椎骨之间，以替换退化的椎间盘。保留活动性脊椎植入物具有一对端板，如同三明治一般地夹着一个内核及一个外核，而且内核同心地位于外核之内。外核包裹着内核，并适当地封闭内核，且维持适当的弹性及灵活性，以利于生理性的活动。内核是由一种弹性材料所构成，并且作为一个实体的隔板，以抵抗及承受局部压力及其他力量。端板提供脊椎植入物固定及融合邻接脊椎骨的功能，并且将内核外及核维持在定位。保留活动性脊椎植入物将退化的椎间盘恢复到正常的高度及功能，并且保留脊椎骨正常的活动能力。

Non-spherical ball and socket joint

A receptacle for receiving a mating member in an orthopaedic joint, wherein the receptacle comprises: a first portion shaped so as to contact with the mating member, in normal use; a second portion shaped so as to not contact with the mating member, in normal use, wherein the first portion comprises a non-spherical surface. A mating member for being received by a receptacle, wherein the mating member comprises: a first portion shaped so as to contact with the receptacle, in normal use; a second portion shaped so as to not contact with the receptacle, in normal use, wherein the first portion comprises a non-spherical surface. Also disclosed are receptacles and heads of generally elliptical shape.

Endoprosthetic bone joint device

Kuenstliches hueftgelenk.

Implante espinal preservador del movimiento para la sustitucion total del disco.

Se presenta un implante espinal que preserva el movimiento para su colocación entre el espacio intervertebral para la sustitución total de un disco espinal degenerado. EI implante espinal de preservación del movimiento tiene un par de placas terminales intercaladas alrededor de un núcleo interno y un núcleo externo, con el núcleo interno colocado concéntricamente dentro del núcleo externo. El núcleo externo encapsula el núcleo interno y proporciona un sellado adecuado del núcleo interno al tiempo que mantiene la flexibilidad y la elasticidad para soportar, ventajosamente los movimientos fisiológicos. El núcleo interno está construido de un material elastomérico y actúa como un diafragma sólido para resistir y soportar la compresión localizada y otras fuerzas. Las placas terminales proporcionan anclaje y fusión con las vértebras adyacentes y mantienen los núcleos interior y exterior en su sitio. El implante espinal preservador del movimiento restaura la altura normal y la función natural del disco espinal degenerado y preserva el movimiento natural de la columna vertebral.

Disc prosthesis device for the cervical spine

Disc prosthesis comprising an insert in the form of a flexible cushion, a first half-shell and a second half shell, the insert in the form of a flexible cushion being positioned between the half-shells, characterized in that a first of the half-shells includes a first base provided with a first surface for hooking on to a first vertebra and a recessed annulus for forming a first cup and in that a second of the half-shells is provided with a first surface for hooking on to a second vertebra and a second surface bearing a rim surrounding a second cup, the cups facing each other each receiving an upper crown and a lower crown of the insert, the annulus and the rim forming walls that slot together with play and making stops for angular and shearing movements between the half-shells.

Artificial cervical and lumbar disc system

An artificial replacement disc includes a pair of substantially parallel plates formed to occupy a space defined by vertebral endplates, each of the plates including a plurality of spikes on a first surface and a concave trough formed on a second surface opposite of the first surface. A mobile core includes a core rim with opposing convex surfaces extending from opposite sides of the core rim, the mobile core being capable of being disposed between the pair of plates to permit the vertebral endplates to move relative to one another. The spikes on each of the plates extend substantially away from the mobile core and the convex surfaces are formed to integrally fit within the concave trough of at least one of the plates. The core rim limits lateral movement of the mobile core relative to the parallel plates. One or more insertion tools for inserting and implanting the replacement disc are also described.

Six degree spine stabilization devices and methods

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

Artificial intervertebral disc

An artificial intervertebral disc is configured to be inserted between adjacent human vertebrae. The artificial intervertebral disc includes a first connection block, a joint block and a second connection block. The joint block has a convex surface and a rear surface. The rear surface of the joint block is stacked on the first connection block. The second connection block is slidably stacked on the convex surface of the joint block, such that the second connection block is movable relative to the first connection block. In addition, the convex surface is a curved surface, and the convex surface is arranged off-axis with respect to the rear surface.

頸椎用の椎間板プロテーゼ装置

椎間板プロテーゼであって、前記椎間板プロテーゼは、可撓性クッションの形態のインサートと、第１のハーフシェル（１０ａ）と、第２のハーフシェル（３０ａ）とを備え、可撓性クッションの形態の前記インサートは前記ハーフシェル同士の間に配置され、前記ハーフシェルのうちの第１のハーフシェル（１０ａ）は、第１の脊椎に取り付けるための第１の面（１２ａ）と、第１のカップ（１１ａ）を形成するためのくぼんだクラウン（１５ａ）とを備えた第１の基部を備え、前記ハーフシェルのうちの第２のハーフシェル（３０ｂ）は、第２の脊椎に取り付けるための第１の面と、第２のカップ（３１ａ）を囲む縁部（３３ａ）を担持する第２の面とを備え、前記カップ（１１ａ、３１ａ）は、互いに対向し、それぞれ、インサートの上部キャップ（２１）および下部キャップ（２３）を受け入れ、前記クラウンおよび前記縁部は、遊びを持って互いに嵌合する壁を形成して、ハーフシェル間の角運動および剪断運動に対する停止部を生成する。

Dispositif prothese discale du rachis cervical

Prothèse de disque comportant un insert en forme de coussin souple, une première demi-coquille (10a), une seconde demi-coquille (30a), l'insert en forme de coussin souple se positionnant entre lesdites demi-coquilles, caractérisé en ce que une première des demi-coquilles (10a) comporte une première base munie d'une première face (12a) d'accrochage sur une première vertèbre et une couronne (15a) creusée pour former une première coupelle (11a) et pour laquelle une seconde (30b) des demi-coquilles est munie d'une première face d'accrochage sur une seconde vertèbre et d'une seconde face porteuse d'une bordure (33a) entourant une seconde coupelle (31a) lesdites coupelles(11a, 31a) en vis-à-vis recevant respectivement une calotte supérieure (21) et d'une calotte inférieure (23) dudit insert ladite couronne et ladite bordure formant des parois s'emboîtant avec jeu et réalisant des butées de mouvements angulaires et de mouvement de cisaillement entre les demi-coquilles.

Six degree spine stabilization devices and methods

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

６運動自由度の脊椎安定化デバイスおよび方法

６運動自由度の脊椎安定化デバイスおよび方法

移植片は、関節の２つの隣接する骨を安定化させる一方、骨の自然な運動学的相対移動を可能にする。支持構成要素は、関節の各骨に接続され、可撓性コアは、それらの間に介在される。コアおよび支持構成要素のうちの少なくとも１つは、コアおよび支持構成要素がその上で相互に対して摺動し得る、平滑な摺動表面を具備し、骨の対応する移動を可能にする。表面は、嵌合曲率を有し、関節の自然な移動を模倣してもよい。コアは、弾性であって、屈曲または圧縮してもよく、骨が、相互に向かって移動する、および／または相互に対して屈曲するのを可能にしてもよい。 【選択図】図１

Hüftgelenkpfanne

人工椎間盤

一種人工椎間盤用以結合於一人體椎間。人工椎間盤包含一第一組接塊、一關節塊及一第二組接塊。關節塊具有一滑動凸面及一背面。關節塊之背面疊設於第一組接塊。第二組接塊可滑動地疊設於關節塊之滑動凸面，以令第二組接塊相對第一組接塊彎曲。其中，滑動凸面為圓弧面並呈偏軸配置。

人工椎间盘

本发明公开一种人工椎间盘，其用以结合于一人体椎间。人工椎间盘包含一第一组接块、一关节块及一第二组接块。关节块具有一滑动凸面及一背面。关节块的背面叠设于第一组接块。第二组接块可滑动地叠设于关节块的滑动凸面，以令第二组接块相对第一组接块弯曲。其中，滑动凸面为圆弧面并呈偏轴配置。

人工椎间盘

本发明公开一种人工椎间盘，其用以结合于一人体椎间。人工椎间盘包含一第一组接块、一关节块及一第二组接块。关节块具有一滑动凸面及一背面。关节块的背面叠设于第一组接块。第二组接块可滑动地叠设于关节块的滑动凸面，以令第二组接块相对第一组接块弯曲。其中，滑动凸面为圆弧面并呈偏轴配置。

使用于全人工椎间盘置换的保留活动性脊椎植入物

一种保留活动性脊椎植入物，其放置于脊椎骨之间，以替换退化的椎间盘。保留活动性脊椎植入物具有一对端板，如同三明治一般地夹着一个内核及一个外核，而且内核同心地位于外核之内。外核包裹着内核，并适当地封闭内核，且维持适当的弹性及灵活性，以利于生理性的活动。内核是由一种弹性材料所构成，并且作为一个实体的隔板，以抵抗及承受局部压力及其他力量。端板提供脊椎植入物固定及融合邻接脊椎骨的功能，并且将内核外及核维持在定位。保留活动性脊椎植入物将退化的椎间盘恢复到正常的高度及功能，并且保留脊椎骨正常的活动能力。

Motion preserving spinal implant for total disc replacement

Motion preserving spinal implant for total disc replacement

组合式半限定多极人工腕关节

本发明公开了一种组合式半限定多极人工腕关节，又可称作“半限定双极人工腕关节”，是根据腕关节骨破坏的具体病理情况，如显示掌腕骨关节面完整、骨质尚好，可以保留大部分的远排腕骨(累及小多角骨、头状骨)，而近排腕骨(舟状骨及月骨)及腕挠骨关节面破环，及可行近排腕骨切除之选型组装；该人工腕关节还可以做另一种组配方式，即可称作“半限定多极人工腕关节”，可以对病理破坏的双排腕骨切除，形成掌、腕、挠各关节的互配组装，会给术者带来灵活、方便和理想的手术结果。

Transforaminal prosthetic spinal disc apparatus

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate.

Aspheric hip bearing couple

A prosthetic ball for use in a ball and cup joint system includes a spherical cap articulation portion defined by a first radius of curvature, and a toroidal articulation portion defined by a second radius of curvature having a circular origin such that the toroidal articulation portion is defined by a portion of the inner surface of a spindle torus.

Transforaminal prosthetic spinal disc apparatus

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate.