Abstract: A surgical saw apparatus, includes: A) a housing; B) a drive unit with a drive axle having a central axis; C) a deflection device, including: a connecting rod that is arranged movably in the housing, with a longitudinal axis, with a rear section and with a front section with members for a fixation of a sawblade; an eccentric shaft with at least one first section, which is arranged coaxially with the central axis of the drive axle and is connected with the drive axle, and with a second section which is eccentric relative to the first section, wherein the rear section of the connecting rod is a bearing for the eccentric second section of the eccentric shaft, and the front section of the connecting rod is a fixation device for a sawblade; and a guiding device for the connecting rod, wherein D) the guiding device includes first members for a limitation of a movement of the connecting rod, which are movable relative to the housing and which force a translational movement of the connecting rod coaxially with the lo

Abstract: A surgical saw apparatus, includes: A) a housing; B) a drive unit with a drive axle having a central axis; C) a deflection device, including: a connecting rod that is arranged movably in the housing, with a longitudinal axis, with a rear section and with a front section with members for a fixation of a sawblade; an eccentric shaft with at least one first section, which is arranged coaxially with the central axis of the drive axle and is connected with the drive axle, and with a second section which is eccentric relative to the first section, wherein the rear section of the connecting rod is a bearing for the eccentric second section of the eccentric shaft, and the front section of the connecting rod is a fixation device for a sawblade; and a guiding device for the connecting rod, wherein D) the guiding device includes first members for a limitation of a movement of the connecting rod, which are movable relative to the housing and which force a translational movement of the connecting rod coaxially with the lo

Abstract: An implant is provided with a main body (1) and with a double coating applied to at least one surface section of the main body (1), wherein the double coating comprises an adhesion promoter layer (2), applied directly to the at least one surface section of the main body, and of an osteointegrative layer (3) covering the adhesion promoter layer (2). The layers (2;3) consist of pure titanium, wherein the adhesion promoter layer (2) has a thickness of 2-6 ?m, in particular a thickness of 3-5 ?m, and the osteointegrative layer (3) has a thickness of 50-70 ?m, in particular of 55-65 ?m. Moreover, the osteointegrative layer (3) has a porosity of 70-90% and a roughness Rz of at least 45 ?m. A related method is also provided for producing such an implant.

Abstract: An implant is provided with a main body (1) and with a double coating applied to at least one surface section of the main body (1), wherein the double coating comprises an adhesion promoter layer (2), applied directly to the at least one surface section of the main body, and of an osteointegrative layer (3) covering the adhesion promoter layer (2). The layers (2;3) consist of pure titanium, wherein the adhesion promoter layer (2) has a thickness of 2-6 ?m, in particular a thickness of 3-5 ?m, and the osteointegrative layer (3) has a thickness of 50-70 ?m, in particular of 55-65 ?m. Moreover, the osteointegrative layer (3) has a porosity of 70-90% and a roughness Rz of at least 45 ?m. A related method is also provided for producing such an implant.

Abstract: An implant is provided with a main body (1) and with a double coating applied to at least one surface section of the main body (1), wherein the double coating comprises an adhesion promoter layer (2), applied directly to the at least one surface section of the main body, and of an osteointegrative layer (3) covering the adhesion promoter layer (2). The layers (2;3) consist of pure titanium, wherein the adhesion promoter layer (2) has a thickness of 2-6 ?m, in particular a thickness of 3-5 ?m, and the osteointegrative layer (3) has a thickness of 50-70 ?m, in particular of 55-65 ?m. Moreover, the osteointegrative layer (3) has a porosity of 70-90% and a roughness Rzof at least 45 ?m. A related method is also provided for producing such an implant.

Abstract: An intervertebral disk prosthesis or the intervertebral implant has a cavity-like middle part with a longitudinal axis, an upper end, a lower end, an upper apposition plate, and a lower apposition plate. The upper apposition plate is placed on the upper end of the middle part such that it is perpendicular to the longitudinal axis. The upper apposition plate is suited for resting against the base plate of a vertebral body. The lower apposition plate is placed on the lower end of the middle part such that it is perpendicular to the longitudinal axis. The lower apposition plate is suited for resting against the cover plate of a vertebral body. The middle part has at least two coaxially arranged plate springs, which gives the middle part a progressive spring characteristic.

Abstract: A damping element includes: two spring elements which are coaxial with or parallel to a longitudinal axis and two axially end-side connectors, where the first spring element exhibits a spring rate F, the second spring element exhibits a spring rate f, and the spring rates F and f are different. A device stabilizing adjacent vertebrae, including N pedicle screws or hooks, where N is greater than or equal to 3 and where each pedicle screw or pedicle hook includes a receiving device receiving a longitudinal affixation device and where an element acting as a spring is inserted between two adjacent pedicle screws or pedicle hooks.

Abstract: A device for elastically stabilizing vertebral bodies includes at least two bone anchoring means, each having a central axis and a head segment. The device also includes elastic means that can be joined to the head segments of two adjacent bone anchoring means in such a manner that the longitudinal axis of the elastic means extends transversely to the central axes of the bone anchoring means. Under compressive loads, the elastic means has a progressive spring characteristic. The elastic means is manufactured from a metallic material and has a plurality of spring coils, of which at least two spring coils have a geometric dimension which is different from the other spring coils.

Abstract: An intervertebral implant has two U-shaped inserts set over each other with a center piece in between. The two inserts each have an opposing base surface, two lateral side surfaces, and a contact surface. The contact surface has a channel configured to receive a spinal process of a vertebral body. The center piece has two resting surfaces corresponding respectively to each contact surfaces. The contact and resting surfaces each have corresponding structures that can engage each other such that the U-shaped inserts can each be fastened in a detachable manner to the center piece. The U-shaped inserts each have on the same lateral side surface connecting means to fasten the inserts to gripping elements of a surgical instrument. And the first and second structures can be engaged or disengaged only by the lateral side surface fitted with the connecting means.

Abstract: A modular intervertebral implant or a modular intervertebral disk prosthesis has a middle piece or central section equipped with elements for detachable fixation to one or two apposition plates designed to rest against the base plate or cover plate of an intervertebral body. A modular kit of such modular implants or disks includes n central sections and m apposition plates, where n=2 and m=4 and preferably n=3 and m=6. The surfaces of the apposition plates that face the central section have elements complementary to the elements for detachable fixation on the central section.

Abstract: Intervertebral disc prosthesis including an upper apposition plate appropriate to rest against the base plate of an upper vertebra, a lower apposition plate spaced apart from the upper apposition plate and suitable to rest against the base plate of a lower vertebra, a plurality of elastic devices mounted between the two apposition plates and in their peripheral zones in a manner that the two apposition plates shall be displaceable in mutually resilient manner, and a central axis which runs essentially perpendicularly to the two apposition plates, the elastic devices being designed/configured in a manner that the intervertebral disc prosthesis as a whole exhibits asymmetrical stiffness.

Abstract: An intervertebral implant includes a middle part, comprising two pins, which can be introduced into the intervertebral space between two vertebrae having a central axis, a first end intersecting the central axis, and a second end intersecting the central axis, and two longitudinal parts each with a longitudinal axis extending transversely to the central axis of the middle part and each with an apposition surface directed transversely to the central axis of the middle part contacting the two processi spinosi of two adjacent vertebra bodies. Each part is connectable with one end of the middle part in such a manner that the apposition surfaces are directed against one another. The middle part of the implant is extendable transversely to its central axis along the longitudinal axes of the two parts.

Abstract: A damping element (1) includes: (a) two spring elements (2, 4) which are coaxial with or parallel to a longitudinal axis (3) and two axially end-side connectors (5, 6), where (b) the first spring element (2) exhibits a spring rate F, (c) the second spring element (4) exhibits a spring rate f, and (d) the spring rates F and f are different. A device stabilizing adjacent vertebras, comprising (a) N pedicle screws of hooks (12), where N?3 and where (b) each pedicle screw or pedicle hook (12) includes a receiving device (13) receiving a longitudinal affixation device (7) and where (c) an element (14) acting as a spring is inserted between two adjacent pedicle screws (12) or pedicle hooks.

Abstract: A damping element (1) comprising (a) two spring elements (2, 4) which are coaxial with or parallel to a longitudinal axis (3) and two axially end-wise connectors (5, 6) which can be linked to the spring elements (2, 4), where (b) the first spring element (2) exhibits a spring rate F, (c) the second spring element (4) exhibits a spring rate f, and (d) the spring rates F and f are different. A system stabilizing adjacent vertebras includes: (a) N pedicle screws or pedicle hooks (12), with N?3, and (b) at least one pedicle screw or one pedicle hook having a receiving device (13) which simultaneously allow receiving two parallel affixation devices (7), and where (c) an element (14) acting as a spring is used for affixation between the minimum of one pedicle screw or pedicle hook (12) including a receiving device (13) and a further adjacent pedicle screw or pedicle hook (12).

Abstract: A damping element includes: two spring elements which are coaxial with or parallel to a longitudinal axis and two axially end-side connectors, where the first spring element exhibits a spring rate F, the second spring element exhibits a spring rate f, and the spring rates F and f are different. A device stabilizing adjacent vertebrae, including N pedicle screws or hooks, where N is greater than or equal to 3 and where each pedicle screw or pedicle hook includes a receiving device receiving a longitudinal affixation device and where an element acting as a spring is inserted between two adjacent pedicle screws or pedicle hooks.

Abstract: An intervertebral implant has two U-shaped inserts set over each other with a center piece in between. The two inserts each have an opposing base surface, two lateral side surfaces, and a contact surface. The contact surface has a channel configured to receive a spinal process of a vertebral body. The center piece has two resting surfaces corresponding respectively to each contact surfaces. The contact and resting surfaces each have corresponding structures that can engage each other such that the U-shaped inserts can each be fastened in a detachable manner to the center piece. The U-shaped inserts each have on the same lateral side surface connecting means to fasten the inserts to gripping elements of a surgical instrument. And the first and second structures can be engaged or disengaged only by the lateral side surface fitted with the connecting means.

Abstract: A modular intervertebral implant or a modular intervertebral disk prosthesis has a middle piece or central section equipped with elements for detachable fixation to one or two apposition plates designed to rest against the base plate or cover plate of an intervertebral body. A modular kit of such modular implants or disks includes n central sections and m apposition plates, where n=2 and m=4 and preferably n=3 and m=6. The surfaces of the apposition plates that face the central section have elements complementary to the elements for detachable fixation on the central section.

Abstract: An intervertebral disk prosthesis or the intervertebral implant has a cavity-like middle part with a longitudinal axis, an upper end, a lower end, an upper apposition plate, and a lower apposition plate. The upper apposition plate is placed on the upper end of the middle part such that it is perpendicular to the longitudinal axis. The upper apposition plate is suited for resting against the base plate of a vertebral body. The lower apposition plate is placed on the lower end of the middle part such that it is perpendicular to the longitudinal axis. The lower apposition plate is suited for resting against the cover plate of a vertebral body. The middle part has at least two coaxially arranged plate springs, which gives the middle part a progressive spring characteristic.

Abstract: An intervertebral disk prosthesis having an essentially hollow cylindrical base element (1) which is provided with a casing (2) that is embodied as a bellows, a top end (3), and a bottom end (4), and a central longitudinal axis (5). The base element also includes an upper apposition plate (6), which is disposed perpendicular to the longitudinal axis (5) at the top end (3) of the base element (1) and rests on the base plate of the vertebra, and a lower apposition plate (7), which is arranged perpendicular to the longitudinal axis (5) at the bottom end (4) of the base element (1) and leans on the cover plate of a vertebra. The casing (2) serves a spring element having a defined spring rate.

Abstract: A device to join a longitudinal support (3) with a bone, in particular with a body of the vertebra, comprising a bone anchoring element (1) that can be fixed on a bone, a connecting element (9) provided on the rear end (5) of the bone anchoring element (1) with a channel axis (27) passing through the connecting element (9) transversely to the central axis (2) to accept a longitudinal support (3), tightening means (13) which can be connected with the free end (21) of the connecting element (9) and are suitable for the fixing of a longitudinal support (3) introduced into the channel (25), and a tilting element (8) provided in the channel (25), said tilting element being rotatable about both the central axis (2) and the axis (7) of rotation that is transverse to the axis (7) of the channel.