Fasteners and fastener delivery devices for affixing sheet-like materials to bone or tissue

摘要

A fastener for attaching a sheet-like implant to tissue or bone may be provided with a first arm having a proximal end and a distal end, a second aim having a proximal end and a distal end, and a bridge extending therebetween. Each of the first and second arms include a trunk portion defining at least a portion thereof, the trunk portion having a lateral extent larger than a lateral extent of the bridge or non-trunk portion of the arm adjacent thereto and can be mounted eccentrically to the bridge or non-trunk portion of the arm adjacent thereto such that the staple includes a first change in lateral stiffness disposed proximate the bridge or non-trunk portion of the arm abutment with the trunk. Fastener delivery devices and methods are also disclosed.

主权项

1. A fastener delivery tool comprising:
a barrel assembly having an outer sheath with a staple delivery assembly movably disposed therein, the staple delivery assembly including a shaft having a pair of stakes extending from a distal end thereof, the stakes sized and shaped to retain a fastener thereon; the staple delivery assembly further including a pair of staple setting rods extending along the shaft having distal portions proximate the stakes to engage a proximal surface on the fastener wherein distal longitudinal movement of the staple setting rods relative to the stakes aids in delivery of the fastener; and, a handle assembly fixed to the outer sheath of the barrel in operative relationship with the staple delivery assembly.