Staple overlap

• US 5,749,896 A
• Filed: 01/21/1997
• Issued: 05/12/1998
• Est. Priority Date: 07/18/1995
• Status: Expired due to Fees

• Current Assignee: Holobeam, Inc.
• Original Assignee: Holobeam, Inc.
• Inventors: Cook, Melvin S.
• Primary Examiner(s): SCHMIDT, JEFFREY
• Application Number:
  US08/786,195
• Time in Patent Office: 476 Days
• Field of Search: 606/219, 606/220, 606/139, 606/151, 606/157, 606/158, 606/75, 227/175.1-181.1, 227/19, 227/902
• US Class Current: 606/219
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position

Abstract

An improved stapling arrangement comprises a unique anvil which forces the ends of the staple legs to overlap when the staple is fully deformed.

Claims

1. A stapling arrangement for stapling tissue comprising:

at least one staple having a crown and two legs, each leg having a tip, each leg further including at least one deformation zone, each said at least one deformation zone being more susceptible to bending than regions of said leg adjacent to each said at least one deformation zone,

an anvil having grooves for deforming said legs of said at least one staple,

said anvil lying on the opposite side of said tissue from the side into which insertion of said tips of said legs of said at least one staple occurs,

a staple pusher connected to said anvil and arranged to push on said crown of said at least one staple such that each of said tips of said legs of said at least one staple pass through said tissue and impinge against at least one groove of said anvil in order to deform said legs of said at least one staple,

said grooves of said anvil being arranged to cause said deformation of said legs such that there is a single overlap of said legs of each staple with respect to each other formed by said deformation.

2. A stapling arrangement for stapling tissue comprising:

at least one staple having a crown and two legs, each said leg having a deformation zone and a tip and a region located between said deformation zone and said tip,

an anvil with grooves for deforming said legs,

a staple pusher movably connected to said anvil and including means for exerting a force upon said crown to push said tips of said legs through said tissue to force said tips against said grooves of said anvil;

said grooves deforming the legs of each of said at least one staple so as to bypass each other once such that said legs and said crown do not all lie in a common plane, said grooves also deforming said legs such that at least part of said regions of said each of said at least one staple are adjacent to each other.