Circular surgical staplers with foldable anvil assemblies

  • US 10,045,769 B2
  • Filed: 07/23/2015
  • Issued: 08/14/2018
  • Est. Priority Date: 03/14/2011
  • Status: Active Grant
First Claim
Patent Images

1. A circular surgical stapler with foldable anvil assembly, the circular surgical stapler comprising:

  • a shaft assembly;

    a stapling head operably attached to said shaft assembly;

    an axially movable anvil shaft comprising a distal end portion, said anvil shaft being selectively axially movable so as to move said distal end portion relative to said stapling head; and

    a foldable anvil assembly operably supported on said anvil shaft, said foldable anvil assembly comprising;

    an outer anvil plate assembly movably coupled to said anvil shaft; and

    an inner anvil plate assembly movably coupled to said anvil shaft and selectively movable between a folded configuration to a radially deployed configuration upon application of an axial deployment motion thereto, said inner anvil plate assembly located radially inboard of said outer anvil plate assembly when in said folded configuration and when said inner anvil plate assembly is oriented in said radially deployed configuration, said inner anvil plate assembly operably retains said outer anvil plate assembly in a radially expanded annular configuration.

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