Surgical instrument with selectively disengageable threaded drive systems

  • US 10,433,844 B2
  • Filed: 03/31/2015
  • Issued: 10/08/2019
  • Est. Priority Date: 03/31/2015
  • Status: Active Grant
First Claim
Patent Images

1. A surgical instrument, comprising:

  • a surgical end effector;

    a threaded rotary input shaft defining a shaft axis;

    a first actuator segment comprising a first thread engagement portion;

    a second actuator segment comprising a second thread engagement portion, said first and second actuator segments being selectively movable in directions transverse to said shaft axis between an engaged configuration wherein said first actuator segment and said second actuator segment form an actuator member in threaded engagement with said threaded rotary input shaft such that rotation of said threaded rotary input shaft causes said actuator member to move axially to impart an actuation motion to said surgical end effector and a disengaged configuration wherein rotation of said threaded rotary input shaft is not imparted to said first and second actuator segments;

    means for selectively moving said first and second actuator segments between said engaged and disengaged configurations; and

    a locking system for preventing axial movement of said first and second actuator segments when said first and second actuator segments are in said disengaged configuration.

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