Patent ID: 9101362
Filing Date: 2015-08-11
Classification: A61B

Abstract:
1. A surgical fastener comprising: surgical fastener means for bringing sides of an external skin wound into apposition and for retracting out of the external skin wound after the external skin wound heals, said surgical fastener means including a clasp having an urging part and a piercing part, the urging part being formed to urge the piercing part to move between open and closed positions, the piercing part including a pair of piercing prongs that terminate at tips, the tips tapering into a sharpened condition to pierce through skin tissue under manual force, one of the piercing prongs and an associated one of the tips being configured to define a common radius of curvature along an entirety of their respective lengths, another of the piercing prongs and associated another one of the tips each being configured to define a further radius of curvature that differs from the common radius of curvature along an entirety of their respective lengths so that the tips overlap each other as the piercing part reaches the closed position and that spread apart from each other as the piercing part reaches the open position, at least one of the urging part and the piercing part including a mechanism that tends to urge the tips of the piercing prongs closer to each other as the piercing part moves to the closed position from the open position, the clasp including a pivot that pivotally connects the piercing prongs to each other to allow the piercing prongs to pivot between the open and closed positions, the mechanism including a torsion spring arranged to exert a bias that urges the piercing prongs to pivot about the pivot in one direction into the closed position, the urging part including a pair of handles arranged so that squeezing the pair of handles toward each other under manual force causes the piercing prongs to pivot about the pivot in a reverse direction into the open position against the bias of the torsion spring.