Motorized surgical instrument

  • US 10,485,537 B2
  • Filed: 09/23/2016
  • Issued: 11/26/2019
  • Est. Priority Date: 09/23/2008
  • Status: Active Grant
First Claim
Patent Images

1. A surgical instrument, comprising:

  • an end effector;

    a firing member configured to move longitudinally within the end effector;

    a drive system coupled to the firing member;

    an electric motor configured to drive the drive system;

    a battery; and

    a control circuit coupled to the electric motor, wherein the control circuit comprises a first switching device and a second switching device, and wherein the control circuit is configured to;

    deliver a maximum voltage from the battery to the electric motor to apply a first torque to the drive system; and

    selectively deliver an increased voltage to the electric motor to apply a second torque to the drive system, wherein the second torque is greater than the first torque, and wherein the increased voltage is greater than the maximum voltage from the battery.

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