Tissue acquisition arrangements and methods for surgical stapling devices

  • US 9,597,075 B2
  • Filed: 06/09/2014
  • Issued: 03/21/2017
  • Est. Priority Date: 07/30/2010
  • Status: Active Grant
First Claim
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1. A surgical instrument comprising:

  • a handle assembly;

    an elongated shaft protruding from said handle assembly and defining a central axis, said elongated shaft terminating in a stapler head, said stapler head comprising;

    a circular staple cartridge having a fastener face; and

    an axially movable cutting member;

    a firing member operably supported in said elongated shaft and oriented to apply a firing motion to said circular staple cartridge;

    an anvil shaft assembly operably supported within said elongated shaft and configured to receive actuation motions from said handle assembly to cause said anvil shaft assembly to move axially within said elongated shaft such that a distal connection portion thereof moves axially relative to said fastener face;

    an anvil removably attachable to said distal connection portion of said anvil shaft assembly;

    a tissue acquisition shaft rotatably supported within said elongated shaft;

    a plurality of tissue acquisition members pivotally attached to a distal end portion of the tissue acquisition shaft and being selectively pivotable between a retracted position to deployed positions upon application of a deployment motion thereto; and

    at least one tissue acquisition pin corresponding to each one of said plurality of tissue acquisition members, each said tissue acquisition pin radially protruding outward from said distal end portion of said tissue acquisition shaft to impale tissue drawn in towards said tissue acquisition shaft by said tissue acquisition members when said tissue acquisition members are moved from said deployed positions to said retracted position.

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