Abstract: A device for a correctly targeted formation of a drill bore centrally in a femoral attachment site of a posterior cruciate ligament of a knee joint comprises a hollow shaft for guiding a drill wire therethrough and a sighting element arranged at a distal end of the hollow shaft. Said sighting element has an edge for placing said sighting element via said edge to an outer margin of a femoral attachment site of a posterior cruciate ligament.

Abstract: A microscope comprising a main objective including a lens assembly movable in the direction of the optical axis of the main objective for focal length variation and comprising an illuminating unit with an illumination deflector element for generating an illuminating beam path directed onto an object plane and extending outside the main objective. The position of the illumination deflector element is adjustable dependent on a focal length variation of the main objective for centering the illumination. The illumination deflector element is movable in a direction parallel to the optical axis of the main objective and is coupled to the movable lens assembly of the main objective.

Abstract: The invention relates to a focusing drive (15) having a linear stroke carriage (6) for carrying and moving an optics carrier in the direction of focus, the focusing drive (15) comprising: a focus carrier (1) having at least one linear guidance system (3) having a rail (4) extending in the direction of focus and having at least one carriage (5) movably supported on the rail (4); and a direct drive (2) for moving a piston (10) supported movably in the direction of focus, which piston is in turn joined to the linear stroke carriage (6) of the focusing drive (15), the linear stroke carriage (6) being joined to the at least one carriage (5) of the linear guidance system (3). This focusing drive (15) makes do with few components without linkage elements, and is significantly quieter.

Abstract: A microscope comprising a main objective including a lens assembly movable in the direction of the optical axis of the main objective for focal length variation and comprising an illuminating unit with an illumination deflector element for generating an illuminating beam path directed onto an object plane and extending outside the main objective. The position of the illumination deflector element is adjustable dependent on a focal length variation of the main objective for centering the illumination. The illumination deflector element is movable in a direction parallel to the optical axis of the main objective and is coupled to the movable lens assembly of the main objective.

Abstract: A device serves for blocking a tendon graft in a drilled hole. An element is connected to said tendon graft which can be expanded radially. The element has a cylindrical body which is divided by an oblique cut into two wedge-shaped bodies initially connected to one another via a predetermined break point.

Abstract: The invention relates to a focusing drive (15) having a linear stroke carriage (6) for carrying and moving an optics carrier in the direction of focus, the focusing drive (15) comprising: a focus carrier (1) having at least one linear guidance system (3) having a rail (4) extending in the direction of focus and having at least one carriage (5) movably supported on the rail (4); and a direct drive (2) for moving a piston (10) supported movably in the direction of focus, which piston is in turn joined to the linear stroke carriage (6) of the focusing drive (15), the linear stroke carriage (6) being joined to the at least one carriage (5) of the linear guidance system (3). This focusing drive (15) makes do with few components without linkage elements, and is significantly quieter.

Abstract: A biodegradable interference screw for directly affixing a transplant to a bone, the interference screw being provided with at least one longitudinal groove designed to co-act with a tool for insertion of and if necessary, removal of the interference screw from an opening provided in the bone to receive both the transplant and the interference screw.

Abstract: A device for a correctly targeted formation of a drill bore centrally in a femoral attachment site of a posterior cruciate ligament of a knee joint comprises a hollow shaft for guiding a drill wire therethrough and a sighting element arranged at a distal end of the hollow shaft. Said sighting element has an edge for placing said sighting element via said edge to an outer margin of a femoral attachment site of a posterior cruciate ligament.

Abstract: In order to improve a surgical system for the preparation of an implant for filling a defect on a bone and/or a cartilage of a human or animal body formed as a result of a trauma and/or degeneration, so that the defect can be filled with the implant with as precise a fit as possible, it is proposed that the system enables a provided defect data file to be processed, which contains data in particular for the description of the shape, area and/or volume of the defect, and that the system enables the implant corresponding to the defect in shape and size to be prepared from at least one provided implant material using the defect data file. In addition, a method for filling a defect on a bone and/or cartilage of a human or animal body present as a result of a trauma and/or degeneration is proposed.

Abstract: A pin for fixing an implant subjected to tensile load, in particular a tendon implant, has a rod-shaped body, the force exerted by the implant being able to be input onto the cross section of the body, on one side, and being able to be output on the opposite side to an anchoring site. It is proposed that the cross section has a longer dimension, in the direction of the force input from the tendon implant than it has transverse to the longitudinal axis.

Abstract: A device (10) serves for guiding a drilling tool (56) for making a bore (58) into a bone (50), intersecting an already existing first bore (54). The device (10) has a first rod-shaped body (12), the first end of which can be introduced into the already existing first bore (54) in the bone (50). Its second end is provided with an arm, which bears a guide (30) for the drilling tool (56), the longitudinal axis of which intersects the rod-shaped body (12) in the region of its first end. The arm has an arcuate portion (26), along which the guide (30) for the drilling tool (56) can be moved. An opening (16) is provided in the rod-shaped body allowing the drilling tool (56) to pass said rod-shaped body.

Abstract: A biodegradable fixation element is provided for anchoring a transplant on bone. A rigid body is made of a biodegradable material, said body having an outer side and a hollow interior surrounded by a wall of said body. Numerous perforations are provided in said wall of said body for allowing growth of bone material into said interior of said body via said numerous perforations. It is proposed that the perforations are formed between said anchoring members and said perforations are formed as holes passing through said wall of said body (FIG. 1).

Abstract: An interference screw serves for anchoring a flexible transplant like a tendon or a ligament in an opening in a bone. The screw has a screw body, a head at one end of said body and a penetrating end at an opposite end of said head and is provided with an outer threading. The outer threading is formed as a sharp threading adjacent to said penetrating end and is formed as a blunt threading in a following region (FIG. 1).

Abstract: An auxiliary graft fixation device for use with an interference screw to secure soft tissue ligament grafts within a bone tunnel. The device is in the form of a spherical member having a throughbore which enables it to be tied to the end of a soft tissue graft. The device enables it to be pulled into the bone tunnel with the soft tissue ligament graft while enabling the graft to be secured within the bone tunnel by an interference screw and preventing the graft from sliding past the interference screw and out of the tunnel.

Abstract: A screw for medical purpose has a screw body having a head portion with a facial end face, a shaft portion extending from an end opposite to said facial end face along an axial direction of said screw body, a threading provided on an outer side of said shaft portion, and at least one axially extending groove cut into said outer side of said shaft portion, said at least one groove extending along said head portion and an entire length of said shaft portion, said at least one groove being provided for inserting a drive element of a driving tool therein.