Interchangeable surgical tool assembly with a surgical end effector that is selectively rotatable about a shaft axis

  • US 10,413,293 B2
  • Filed: 04/01/2016
  • Issued: 09/17/2019
  • Est. Priority Date: 04/01/2016
  • Status: Active Grant
First Claim
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1. A surgical instrument, comprising:

  • an elongate shaft assembly defining a shaft axis;

    a surgical end effector operably coupled to said elongate shaft assembly by a mounting fixture configured to permit said surgical end effector to selectively rotate about said shaft axis upon application of at least one rotary positioning motion thereto, said surgical end effector comprising a firing member configured for selective axial movement therein in response to an application of at least one rotary control motion thereto;

    an end effector rotary locking system interfacing with said surgical end effector and configured to lock said surgical end effector in rotary orientations about said shaft axis upon application of an axial locking motion to said end effector rotary locking system and to unlock said surgical end effector for selective rotation about said shaft axis upon application of an axial unlocking motion to said end effector rotary locking system, said end effector rotary locking system comprising a rotation locking disc coupled to said surgical end effector for rotational travel therewith upon said application of said at least one rotary positioning motion to said surgical end effector, said rotation locking disc further configured to frictionally engage said mounting fixture to prevent rotation of said surgical end effector about said shaft axis upon application of said axial locking motion to said end effector rotary locking system; and

    a rotary drive system configured to apply said at least one rotary control motion to said firing member, said rotary drive system configured to apply at least one said rotary positioning motion to said surgical end effector when said end effector rotary locking system is in an unlocked configuration to position said surgical end effector in a selected one of said rotary orientations about said shaft axis.

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