Suture anchor with reversible expansion

摘要

The anchor comprises a hollow body (2) with a head (3) and a tip with a conical point (8) connected by reversible expansion members (6,7) and equipped with a stop (14) to limit their movement. A traction force applied to the tip through an inner threaded hole (10) causes the expansion members to deploy sideways and fix the anchor. A thrust force in the same direction on the tip retracts the expansion members and allows the anchor to be withdrawn.