Staple cartridges with atraumatic features

  • US 10,709,446 B2
  • Filed: 04/01/2016
  • Issued: 07/14/2020
  • Est. Priority Date: 04/01/2016
  • Status: Active Grant
First Claim
Patent Images

1. A circular staple cartridge for use with a circular surgical stapling instrument, wherein the circular staple cartridge comprises:

  • an outer tissue-contacting surface comprising at least one first staple cavity, wherein the at least one first staple cavity comprises a longitudinal axis bisecting the at least one first staple cavity, and wherein the longitudinal axis is oriented along the length of the at least one first staple cavity;

    a staple driver movable between a starting position and a fired position, wherein the at least one first staple cavity is configured to receive at least one first staple, wherein the at least one first staple is supported by the staple driver, and wherein the at least one first staple includes a first staple leg with a first tip protruding above the outer tissue-contacting surface when the staple driver is in the starting position;

    an inner tissue-contacting surface comprising at least one second staple cavity; and

    at least one pocket extender protruding from the outer tissue-contacting surface, wherein the at least one pocket extender is defined about a perimeter of the at least one first staple cavity, and wherein the pocket extender comprises a jacket configured to conceal the first tip when the staple driver is in the starting position, and wherein the jacket comprises;

    an end portion positioned about a first end of the at least one first staple cavity, wherein the first end is positioned on the longitudinal axis of the at least one first staple cavity;

    an inner side wall extending from the end portion on a first side of the longitudinal axis, wherein the inner side wall extends from the outer tissue-contacting surface and comprises a first top most surface; and

    an outer side wall extending from the end portion on a second side of the longitudinal axis opposite said first side, wherein the outer side wall extends from the outer tissue-contacting surface and comprises a second top most surface, and wherein the first top most surface is higher than the second top most surface.

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