Patent ID: 7927337
Filing Date: 2011-04-19
Classification: A61B

Abstract:
1. A bone spreader for spreading bones apart, comprising: a parallel guide system with a guide bar having a noncircular cross section; a first pin and a second pin; a first tubular pin holder and a second tubular pin holder connected to one another by the parallel guide system, the first and second tubular pin holders configured to receive the first pin and second pin, respectively, couple adjacent to the bone parts that are to be spread apart to the parallel guide system, and at least one of the first and second tubular pin holders being arranged rigidly on the guide bar to guide parallel displacement of the bones, and having a locking device for a respective one of the first and second pins after being positioned therethrough; and wherein the first and second pins each have at least one transverse groove formed therein, the locking device includes a locking finger which is guided between a locking position and a release position in a transverse movement tangentially with respect to the tubular pin holder, the locking finger being configured to engage in the groove in the locking position, and the tubular pin holders are arranged in planes which are perpendicular to the guide bar.