Abstract: The invention relates to a bone screw having a screw shaft (15) comprising a point (13) and concentric to a longitudinal axis (27) of the screw, and that can be anchored in a bone or part of a bone. A screw head (14) is attached to the screw shaft (15). The screw shaft (15) is substantially made of a plastic transparent to X-rays. A part (5, 7, 9, 24) of the screw shaft (15) is made of a different material than that of a core (3, 30) substantially forming the screw shaft (15). The at least one load-bearing area (5, 7, 9, 24) is preferably made of metal or plastic, such as PEEK.

Abstract: The invention relates to an implant system having at least one component (6, 24, 33, 39) comprising an elongated body (15, 25, 34, 40) having at least one segment at which it can be connected to an attachment system (2, 3; 42) of the implant system, such as a pedicle screw or a brace. The elongated body (15, 25, 34, 40) is made of a plastic transparent to X-rays and is fixedly connected to a substantially harder part (16, 17, 27, 28, 35, 37, 41) in the at least one segment named above, said harder part forming an interface to said attachment element (2, 42).

Abstract: Disclosed is a device comprising at least one intervertebral implant (3) and at least one plate (4,5) that is to be connected to the intervertebral implant (3) and an adjacent spine (21-23). The intervertebral implant (3) is connected to at least two spaced-apart plates (4,5). One end of both plates (4,5) respectively forms a fixable joint along with the intervertebral implant (3). Preferably, at least one of the plates (5,4) is embodied in a Z-shaped or L-shaped manner. The inventive device provides for great adaptability to the anatomic characteristics of the spinal column and a modular structure while the number of parts is kept small.

Abstract: The inter-vertebral implant comprises a first part (2, 21, 26) and a second part (3, 22, 27), which may be uniportally implanted in a disc cavity (B) and connected to each other therein. The parts (2, 3; 21, 22; 26, 27) comprise an opening (4, 5; 28, 29) for housing spongiosa or bone replacement material. Both parts (2, 3; 21, 22; 26, 27) have connector means (8, 9; 23, 24; 31, 35), which engage with each other on implantation in the disc cavity (B) and thus connect both parts (2, 3; 21, 22; 26, 27) to each other. At least one part (3, 22) preferably comprises a groove (8, 23) in which a spring (9, 24) of the other part may be introduced in a sliding manner. The groove (8, 23) and the spring (9, 24) are arranged on the inner narrow faces (10, 11) of both parts (2, 3; 21, 22) which are to come together. The implant may be implanted uniportally through a transforaminal or an extraforaminal opening (T, E) equally carefully.

Abstract: A device for precisely placing instruments or implants in body organs with the aid of a targeting device (40) interacting with a computer tomograph, characterized in that the targeting device is arranged in the form of a navigation device (30) on a carrier (2) which is diplaceable on a substructure like a carriage which can be fixed in relation to the substructure and in that the navigation unit (30) comprises a retaining element for holding and guiding a targeting instrument, implant or other object. The navigation unit (30) can be displaced and/or rotated on one or several planes in relation to the carrier and the retaining element can be displaced and/or rotated on one or several planes in relation to the navigation unit (30), being reciprocally fixable in the adjusted position thereof.

Abstract: Disclosed is a device comprising at least one intervertebral implant (3) and at least one plate (4,5) that is to be connected to the intervertebral implant (3) and an adjacent spine (21-23). The intervertebral implant (3) is connected to at least two spaced-apart plates (4,5). One end of both plates (4,5) respectively forms a fixable joint along with the intervertebral implant (3). Preferably, at least one of the plates (5,4) is embodied in a Z-shaped or L-shaped manner. The inventive device provides for great adaptability to the anatomic characteristics of the spinal column and a modular structure while the number of parts is kept small.