Patent ID: 7780675
Filing Date: 2010-08-24
Classification: A61F

Abstract:
1. A surgical instrument for removing an intervertebral implant from an intervertebral space of a human or animal spinal column, comprising a coupling part arranged at a distal end of the surgical instrument for placement on an intervertebral implant in a placement position, the coupling part being able to be brought from the placement position into a coupling position in which an intervertebral implant is held with force locking and/or positive locking on the coupling part, the coupling part comprising at least one first coupling element and at least one second coupling element, which are engageable with an intervertebral implant in the coupling position, the at least one first coupling element and the at least one second coupling element arranged so as to be movable relative to each other in a direction that is parallel to a longitudinal axis defined by the surgical instrument and in such a way that a spacing between the at least one first coupling element and the at least one second coupling element in a direction parallel to the longitudinal axis defined by the surgical instrument is alterable for transferring the surgical instrument from the placement position to the coupling position and/or vice versa, the at least one second coupling element comprising a retaining projection extending radially outwardly from the at least one second coupling element, the retaining projection comprising an implant clamping surface facing a proximal direction for engaging an intervertebral implant when the coupling part is in the coupling position, wherein in the placement position, the at least one second coupling element is movable so far in a distal direction that a spacing between the at least one first coupling element and the at least one second coupling element is greater than in a coupling position in which the intervertebral implant may be held with force locking and/or positive locking between the at least one first coupling element and the at least one second coupling element.