Motor-driven surgical cutting instrument

  • US 10,736,628 B2
  • Filed: 09/08/2015
  • Issued: 08/11/2020
  • Est. Priority Date: 09/23/2008
  • Status: Active Grant
First Claim
Patent Images

1. A surgical instrument for cutting and stapling tissue, wherein the surgical instrument comprises:

  • a handle;

    a shaft extending from the handle;

    an end effector connected to the shaft, wherein the end effector is configured to staple and cut tissue, and wherein the end effector comprises;

    a proximate end adjacent to the shaft and a distal end spaced from the proximate end; and

    a cutting instrument for moving along a cutting travel path to cut the tissue, wherein the cutting travel path comprises;

    a forward path in which the cutting instrument moves from the proximate end of the end effector to the distal end; and

    a return path in which the cutting instrument moves from the distal end of the end effector to the proximate end;

    a motor;

    a power source for providing electrical energy to the motor, wherein the power source comprises one or more battery cells;

    a cutting instrument position sensor for sensing a position of the cutting instrument along the cutting travel path; and

    a motor control circuit connected to the motor and to the power source, wherein the motor control circuit controls power levels supplied to the motor from the power source based on the position of the cutting instrument along the cutting travel path sensed by the cutting instrument position sensor, such that;

    the motor control circuit causes a first power level to be supplied to the motor when the cutting instrument is in a first position range along the forward path of the cutting travel path; and

    the motor control circuit causes a second power level to be supplied to the motor when the cutting instrument is in a second position range along the forward path of the cutting travel path without changing the number of one or more battery cells electrically connected to the motor.

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