Two-piece tissue fastener with deformable retaining receiver

A polymeric fastener adapted to hold together two portions of mammalian tissue, such as are defined by a wound or incision, to facilitate healing of the wound or incision, said fastener comprising:

• an open loop fastening member comprising a pair of legs with distal ends adapted to penetrate said tissue portions and a link connecting said legs that is adapted to be disposed adjacent one of said tissue portions, said legs being smooth and free of projections;
• and
• a receiver adapted to be disposed against the other of said tissue portions opposite said fastening member, said receiver defining one passage therein for receiving one of said fastening member legs after said legs have been inserted through said tissue portions and defining another passage therein for receiving the other of said fastening member legs after said legs have been inserted through said tissue portions, said receiver further defining a plurality of deformable projections spaced peripherally around the interior surface of each said passage for being deformed as one of said legs is received in said passage to thereby effect an interference fit engagement between the exterior surface of the fastening member legs and the deformable projections and inhibit withdrawal of said leg from said receiver, said receiver being rigid and non-deformable except for said projections.