Patent ID: 9220520
Filing Date: 2015-12-29
Classification: A61B,A61F

Abstract:
1. An anti-backout stylus instrument assembly comprising: a stylus configured for insertion into a locking stylus holder, a locking stylus holder, said locking stylus holder configured to engage said stylus at a series of discrete positions during insertion of said stylus into said locking stylus holder, and to prevent said stylus from being withdrawn to a previous one of said discrete positions to thereby prevent inadvertent backing out of said stylus from said locking stylus holder, wherein each of said discrete positions matches a particular femoral size, such that each engagement of one of said discrete positions by said locking stylus holder indicates a femoral size, wherein each engagement of one of said discrete positions by said locking stylus holder produces a sound, said sound providing indication of a femoral size.