Motor-driven surgical cutting instrument with electric actuator directional control assembly

  • US 9,675,372 B2
  • Filed: 05/24/2013
  • Issued: 06/13/2017
  • Est. Priority Date: 12/24/2009
  • Status: Active Grant
First Claim
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1. A surgical instrument, comprising:

  • an end effector comprising a moveable component;

    an electric motor for powering the end effector;

    a moveable drive member that is driven in a first direction when the electric motor operates in a first direction and that is driven in a second direction when the electric motor operates in a second direction, wherein movement of the drive member causes movement of the moveable component of the end effector, and wherein the moveable drive member defines a channel; and

    a motor control circuit connected to the motor for controlling the motor, wherein the motor control circuit comprises a switching circuit that, upon actuation, reverses direction of the motor from the first direction to the second direction, wherein the switching circuit is actuatable separately through each of;

    actuation of a moveable switch actuator of the switching circuit through movement of the drive member at least in the first direction from a first switch actuator position to a second switch actuator position, wherein the moveable switch actuator comprises;

    a first portion that is disposed in the channel defined by the drive member; and

    a second portion that actuates a switch of the switching circuit when the drive member engages the first portion of the moveable switch actuator to move the moveable switch actuator from the first switch actuator position to the second switch actuator position; and

    manual actuation by a user of the surgical instrument.

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