Circular stapling instruments with secondary cutting arrangements and methods of using same

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 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
• a rotatable cutting member operably supported adjacent to said tissue acquisition members and being selectively rotatable about the central axis upon application of a cutting actuation motion thereto.