Abstract: An intervertebral implant for restoring natural function to a spine following the removal or an intervertebral disk or part thereof. The implant comprises a central axis, a top part, a bottom part and a joint arranged axially between the top part and the bototm part. The top part comprises a top surface, a ventral side surface, a dorsal side surface and two lateral side surfaces, wherein the top surface is suitable to be placed on the base plate of a body of the vertebra adjacent and above the site of removal. The bottom part has a bottom surface, a ventral side surface, a dorsal side surface and two lateral side surfaces; wherein the bottom surface is suitable to be placed on the cover plate of a body of the vertebra adjacent and below the site of removal. The joint comprises a convex joint part with a first articular surface and a joint shell matching it, with a second articular surface mounted in a sliding manner on the first articular surface.

Abstract: An endoprosthesis for a joint, in particular a an intervertebral implant with a central axis, a top part, a bottom part and a joint provided between them, wherein the joint comprises at least two articular surfaces A and B that can slide on one another; the top part has a top apposed surface that intersects the central axis and lateral surfaces; the bottom part has a bottom apposed surface that intersects the central axis and lateral surfaces; and wherein the endoprosthesis comprises at least channel suitable to convey body fluid, said channel terminating in one of the two articular surfaces A and B and connecting it with the exterior of the endoprosthesis for the joint.

Abstract: An implant for an intervertebral space with a shaped body. The implant has a top contact surface to be placed on a base plate of a body of the vertebra adjoining the implant from above, a bottom contact surface to be placed on a cover plate of a body of the vertebra adjoining the implant from below, two lateral surfaces, a front lateral and a rear lateral surface as well as a central axis that intersects the two contact surfaces, a longitudinal axis that intersects the front and rear lateral surfaces and a transverse axis that intersects the lateral surfaces. The implant also has a central plane situated between the contact surfaces and at right angles to the central axis of the body. The contact surfaces have a plurality of macroscopic teeth with central axes, where the central axes of the plurality of teeth are inclined relative to the central plane in such a manner, that a rotation of the body of 90° about the longitudinal axis is facilitated in one direction and impeded in the other direction.

Abstract: A bone implant and the method of manufacturing thereof, the bone implant, in particular an inter-vertebral implant, made of a radiation-permeable material. The inter-vertebral implant defining a surface and comprising a front section, a back section, two lateral sections defining a central axis, and a substantially hollow interior chamber, each section having a superior and inferior vertebral contacting surface. The hollow chamber is subdivided by at least two partitions running essentially parallel to the central axis and which connect the front section to the back section.

Abstract: An intervertebral implant (1), having an upper section (10) provided with a ventral side area (11), a dorsal side area (12), two lateral side areas (13,14), a top apposition surface (15) and a bottom surface (16); and a lower section (20) provided with a ventral side area (21), a dorsal side area (22), two lateral side areas (23,24), a bottom apposition surface (25) and a top surface (26). The two sections (10;20) are moveable in relation to each other by means of two joints (38;39) arranged between the two sections (10;20), the two joints (38;39) are realised by an upper joint section (31) connected to the upper section (10), a central joint section (32) and a joint section (33) connected with the lower section (20).

Abstract: A bone implant and the method of manufacturing thereof, the bone implant, in particular an inter-vertebral implant, made of a radiation-permeable material having a circular-shaped hollow body with a sleeve. The inter-vertebral implant defining a surface and comprising a front section, a back section, and two lateral sections defining a central axis. The hollow body is subdivided by at least two partitions running essentially parallel to the central axis and which connect the front section to the back section. The surface of the bone implant has surface irregularities of at least 2 ?m, and the at least two partitions have at least one perforation.

Abstract: An intervertebral implant 1 having a lower implant part 2 and an upper implant part 5. The lower implant part 2 has a hollow cylindrical cavity 3 with an outer casing 14 and an axis of rotation 11, and an apposition part 4 intended for contacting the covering surface of the adjoining lower vertebra. The upper implant part 5 has an essentially circularly cylindrical shaft 6, which has an external thread 7 and an axis of rotation 11 and extends into the cavity 3 of the lower implant part 2, and an apposition part 8, intended for contacting the covering surface of the adjoining upper vertebra. The two implant parts 2, 5 may be secured to prevent rotation about their axis of rotation 11. The implant 1 also includes a ring 9 with an internal thread 10, which is disposed between the two implant parts 2, 5 and interacts with the external thread 7 of the upper implant part 5.

Abstract: An intervertebral implant having a three-dimensional body (10) and a securing plate (1). The three-dimensional body (10) includes an upper side (1) and an underside (2) which are suitable for abutting the end plates of two adjacent vertebral bodies, a left side surface (3) and a right side surface (4), a front surface (5) and a rear surface (6), a horizontal middle plane (7) between the upper side (1) and the underside (2), and a vertical middle plane (12) extending from the front surface (5) to the rear surface (6). The three-dimensional body further includes a plurality of boreholes (9a) passing through the body (10), which are suitable for accommodating longitudinal fixation elements (20).

Abstract: An implant for use in bone fixation, includes combination of the two materials: metal and plastic. The implant defines several passages with axles (3) running through the implant, which are suitable for receiving a bone fixation device, such as a bone screw. The passages are provided with a peripheral perimeter, which is made of a different material than the material of the implant surrounding the perimeter. The implant is, on the one hand, not too rigid and, on the other hand, does not present problems as regards the screw-implant interface.

Abstract: The bone screw (1) is used for locking an articular facet between the superior and inferior articular processes of two vertebral bodies and is provided with a threaded shaft (2), a screw head (3) and a central axis (4). The screw head (3) is further provided with a number of grooves (5) on the periphery of the screw head (3) which run essentially parallel to said central axis (4).

Abstract: An intervertebral implant (1), specifically an artificial intervertebral disk, with a central axis (2), and an upper plate-shaped section (10), suitable for laying onto the base plate of a vertebral body lying on top, a lower plate-shaped section (30), suitable for laying onto the cover plate of a vertebral body lying below, wherein a central, plate-shaped section (20) is arranged between the upper and the lower section (10;30), a first circular-cylindrical rod (40) with a longitudinal axle (41) is arranged between the upper section (10) and the central section (20), and a second circular-cylindrical rod (50) with a longitudinal axle (51) is arranged between the lower section (30) and the central section (20).

Abstract: A prosthesis for use in maintaining an interspinal space is disclosed. The prosthesis may be provided as first and second substantially symmetrical halves. The first and second halves may each have a coupling portion and a process portion. The coupling portions allow the separate halves to be separately fit within the interspinal space and then connected to form a single prosthesis, eliminating the need for cutting connecting ligaments to allow insertion of the prosthesis. Various connection and locking arrangements are disclosed to maintain the halves engaged with each other and the interspinal space.

Abstract: A bone implant and the method of manufacturing thereof, the bone implant, in particular an inter-vertebral implant, made of a radiation-permeable material having a circular-shaped hollow body with a sleeve. The inter-vertebral implant defining a surface and comprising a front section, a back section, and two lateral sections defining a central axis. The hollow body is subdivided by at least two partitions running essentially parallel to the central axis and which connect the front section to the back section. The surface of the bone implant has surface irregularities of at least 2 &mgr;m, and the at least two partitions have at least one perforation.