Abstract: A surgical clip applier is provided and includes a ratchet mechanism having a rack member connected to a drive channel such that axial translation of the drive channel results in axial translation of the rack member, the rack member defining a first set of teeth along a first side thereof and a second set of teeth along a second side thereof. The ratchet mechanism including a first pawl and a second pawl each tiltably supported in the housing and disposed on respective opposed sides of the rack member; and a buckling spring interposed between the first pawl and the second pawl and constrained in a slot formed in the rack member, wherein the buckling spring is dimensioned so as to bow in one of a proximal direction and a distal direction.

Abstract: A single fire tacker instrument is provided for installing a fastener through a prosthetic mesh and into tissue. The single fire tacker instrument includes a handle assembly and an elongated tacker assembly extending distally from the handle assembly. The elongated tacker assembly includes an inner tube for mounting the elongated tacker assembly to the handle assembly. The elongated tacker assembly includes a drive rod and a driver for rotating the faster into tissue. A spring clip is provided about the driver to releasably retain the fastener on the driver. The elongated tacker assembly and additionally includes a spring biased outer tube mounted for movement relative to the handle assembly. The outer tube shields the fastener prior to insertion into tissue.