×

SURGICAL STAPLING DEVICE WITH RESETTABLE ANVIL ASSEMBLY

  • US 20180206846A1
  • Filed: 12/20/2017
  • Published: 07/26/2018
  • Est. Priority Date: 01/24/2017
  • Status: Active Grant
First Claim
Patent Images

1. A surgical stapling device comprising:

  • a handle assembly;

    an adaptor assembly having a proximal portion coupled to the handle assembly, a distal portion, and an anvil retainer, the anvil retainer extending from the distal portion of the adaptor assembly and being movable from a retracted position to an advanced position; and

    a tool assembly supported on the distal portion of the adaptor assembly, the tool assembly including a shell assembly having an annular staple cartridge having a plurality staples and an anvil assembly, the anvil assembly including;

    a center rod assembly including an anvil center rod defining a longitudinal axis and having a proximal portion configured to releasably engage the anvil retainer of the adaptor assembly and a distal portion; and

    an anvil head assembly pivotally secured to the distal portion of the anvil center rod, the anvil head assembly including a housing and a cut ring assembly, the housing defining a recess and including a post centrally disposed within the recess and an annular tissue contact surface positioned about the recess, the post defining a longitudinal axis, the tissue contact surface of the housing defining a plurality of staple deforming pockets, the cut ring assembly being supported about the post and movable between retracted and advanced positions, and a cut ring retainer positioned about the post and movable between a retracted position in which the cut ring retainer retains the cut ring assembly in its retracted position and an advanced position to permit movement of the cut ring assembly to its advanced position, the anvil head assembly being pivotal from an operative position in which the longitudinal axis of the anvil center rod is aligned with the longitudinal axis of the post to a tilted position in which the longitudinal axis of the anvil center rod and the longitudinal axis of the post define an acute angle, wherein in its retracted position, the cut ring assembly is positioned to engage the center rod to retain the anvil head assembly in the operative position and in its advanced position, the cut ring assembly is positioned to permit pivotal movement of the anvil head assembly to the tilted position.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×