Abstract: A locking mechanism for securing a bone screw 20 to a clamping element 30 of an osteosynthesis holding system 5 is provided. The bone screw 20 has a circumferential groove 25 located on a top portion of the screw 20 below a screw head 22. Snap catches 35 protrude from a bone-contacting surface 38 of the clamping element 30 and interlock with the groove 25 in the screw 20 when the screw 20 is inserted into the clamping element 30 (e.g., when the screw is screwed into a bone segment through a hole in the clamping element). A removal device 90 is provided for removing the screw 20, as a greater axial force is required to overcome the locking mechanism than is needed to engage the locking mechanism. A method for revision (removal) of the screw 20 from the locking mechanism is also provided.

Abstract: An endoscopic insertion apparatus for a spinal column implant system is provided having a screwing-in tool and an elongated holding device for holding a bone plate. The implant system essentially comprises at least one anchoring element, a bone plate connected to the anchoring element and at least one connection element for connecting at least two bone plates. The holding device comprises an insertion sleeve and a centering element. The centering element and the insertion sleeve can be connected to one another in a screwing-in position by a coupling mechanism in the direction of a longitudinal axis of the holding device, and the centering element and insertion sleeve can be separated from one another in a centering position. The invention reduces the number of parts used as compared to prior art insertion apparatus and simplifies handling, particularly of the centering element, since the centering element is provided as part of the holding device.

Abstract: An osteosynthetic holding system is provided which comprises bone anchoring elements, each of which has a clamping element as well as two receptacles arranged thereon for receiving holding bars. The receptacles have blocking elements arranged thereon which define accesses to the receptacles. Two holding bars are provided which are insertable into the receptacles of each bone anchoring element. The clamping element can be tightened to clamp the two holding bars against the receptacles, thereby fixing the position of each bone anchoring element with respect to the other. The blocking elements, together with the clamping element in a tightened state, constrict the accesses to said receptacles in a direction transverse to a longitudinal direction of the holding bars such that the holding bars no longer fit through the accesses.

Abstract: A surgical torque wrench having jaws for application to a rotating part and a handle removably secured to the jaws. The jaws and handle are secured together about a pivot that is parallel to the axis of rotation of the rotating part. A securing device is fitted between the jaws and the handle which secures them relative to each other in a given angular position and is releasable when a given torque is reached. A removable handle member is provided to fix the jaws to the handle to allow for application of torque.

Abstract: In the case of a surgical device for fixing bone elements, having an elongated, flexible clamping means for winding around and bracing the bone elements to be fixed, having a connecting part for connecting the ends of the tightened clamping means, a first end of the clamping means being fastenable to the connecting part and the second free end of the clamping means being passable through an opening of the connecting part so as to form a loop, and having a locking member supported counter to the clamping direction against the connecting part and non-releasably connectable to the clamping means, in order to refine said device in such a way that, while being easy to handle, it not only enables a reliable permanent fixing of the clamping means but also, without additional aids, allows a temporary fixing during an operation, it is proposed that the locking member comprises a blocking element which blocks a movement of the clamping means counter to the clamping direction.

Abstract: A surgical tensioning device for tensioning a tensioning element, such as a cable, that secures bone elements in position. The device includes a handle, a slide housed within the handle, and a holding element that is held on the slide. The slide is movable back and forth in a tensioning direction and contrary to the tensioning direction. The holding element secures the tensioning element on the slide during a movement of the slide in the tensioning direction. During a movement of the slide contrary to the tensioning direction, a blocking element held on the handle blocks a movement of the tensioning element contrary to the tensioning direction, and the holding element releases the tensioning element. The device is easily handled, and the tensioning of the tensioning element is not limited by the path of displacement of the slide.