Surgical circular stapler with tissue retention arrangements

  • US 8,801,735 B2
  • Filed: 07/30/2010
  • Issued: 08/12/2014
  • Est. Priority Date: 07/30/2010
  • Status: Active Grant
First Claim
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1. A surgical instrument comprising:

  • an elongated shaft defining a central axis, said elongated shaft having a distal end portion configured to operably support a circular staple cartridge therein;

    a plurality of acquisition members operably supported within said elongated shaft, each said acquisition member having a flexible tissue-piercing distal portion that is radially deployable away from said central axis such that upon application of a deployment motion to said plurality of said acquisition members, said plurality of acquisition members extend simultaneously in a plurality of radial directions relative to an outer perimeter of said elongated shaft;

    at least one flexible knife member movably supported in said elongated shaft, each said knife member having a distal cutting portion that is axially advanceable out of said distal end portion of said elongated shaft upon application of an axial actuation motion thereto;

    a rotary actuator operably interfacing with each said knife member such that each said knife member is selectively rotatable about said central axis upon application of a rotary actuation motion to said rotary actuator.

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