Circular fastener cartridges for applying radially expandable fastener lines

  • US 10,426,476 B2
  • Filed: 09/26/2014
  • Issued: 10/01/2019
  • Est. Priority Date: 09/26/2014
  • Status: Active Grant
First Claim
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1. A fastener cartridge assembly for use with a circular surgical fastening device comprising a circular knife and an anvil, wherein the fastener cartridge assembly comprises:

  • a cartridge body comprising a circular deck, wherein said circular deck comprises an inner edge, wherein said inner edge comprises an inner circular axis having an inner radius, and wherein said circular knife is configured to cut tissue clamped between said circular deck and the anvil along a circular knife path having a knife radius that is less than said inner radius;

    a plurality of transverse fastener cavities opening through the circular deck in a transverse cavity zone, wherein each said transverse fastener cavity comprises two cavity ends, wherein one said cavity end of each of the transverse fastener cavities is positioned on a first circular axis having a first radius, and wherein the other said cavity end of each said transverse fastener cavity is positioned on a second circular axis that has a second radius that differs from the first radius;

    a plurality of circumferential fastener cavities opening through the circular deck, wherein each of the circumferential fastener cavities are aligned on a third circular axis that comprises a third radius that differs from the first and second radiuses, and wherein the circumferential fastener cavities are not positioned in said transverse cavity zone; and

    a plurality of fasteners removably positioned within said fastener cavities, wherein said plurality of fasteners are configured to be ejected from said fastener cavities simultaneously, and wherein said plurality of fasteners comprises;

    a plurality of first fasteners comprising a first formed height; and

    a plurality of second fasteners comprising a second formed height, wherein said first formed height and said second formed height are different,wherein said third radius is greater than said inner radius, andwherein said first radius and said second radius are greater than said third radius.

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