TROCAR SEAL WITH RETRACTION INDUCED HINGE

摘要

A trocar comprising an alignment channel (53, 153) and an instrument seal (40, 140) comprising a bending portion (43, 143) and a base portion. The be nding and base portions of the instrument seal are spaced relative the align ment channel such that when a surgical instrument is retracted the bending p ortion inverts and the lip does not enter the alignment channel.