Patent ID: 8585710
Filing Date: 2013-11-19
Classification: A61F

Abstract:
1. A surgical instrument for determining at least one of the size and the height of an intervertebral implant insertable into an intervertebral space between two adjacent vertebral bodies of two vertebrae of a human or animal spinal column, the intervertebral implant having a first plate for abutment against an articular surface of one of the two adjacent vertebral bodies as well as a second plate supported directly or indirectly on the first plate for abutment against an articular surface of the other of the two adjacent vertebral bodies, the instrument comprising: a holding part defining a longitudinal direction; and a test implant, which comprises a first test plate and a second test plate, each test plate having at least one abutment surface for abutment against one of the articular surfaces, wherein provided on a distal end of the holding part is a holding ring for detachable connection to the test implant, at least one of the first and the second test plates in relation to the longitudinal direction being detachably connectable to the holding ring in at least two defined, different angular positions relative thereto, wherein a first and a second connection element are provided for connecting the holding ring to one of the test plates, one of the test plates and the holding ring each carrying one of the connection elements, and wherein at least two setting elements are provided for defining and setting different angular positions of at least one of the first and the second test plates relative to the holding ring, the at least two setting elements configured for engagement with one another in the different angular positions, and at least one of the first and the second test plates having one of the setting elements and the holding ring having another of the setting elements.