Mechanisms for compensating for battery pack failure in powered surgical instruments

  • US 10,292,704 B2
  • Filed: 12/30/2015
  • Issued: 05/21/2019
  • Est. Priority Date: 12/30/2015
  • Status: Active Grant
First Claim
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1. A surgical instrument, comprising:

  • a jaw assembly, comprising;

    a staple cartridge including a plurality of staples; and

    an anvil, wherein at least one of the staple cartridge and the anvil is movable relative to the other one of the staple cartridge and the anvil to capture tissue therebetween;

    a firing assembly configured to deploy the plurality of staples into the captured tissue during a firing sequence; and

    a handle, comprising;

    an electric motor operably coupled to the firing assembly, wherein the electric motor is configured to generate at least one rotational motion to motivate the firing assembly to deploy the plurality of staples into the captured tissue during the firing sequence; and

    a power pack separably couplable to the handle, wherein the power pack comprises;

    a plurality of rechargeable battery cells configured to power the electric motor;

    at least one battery-cell health indicator; and

    an electronic control circuit configured to;

    assess whether a subset of the plurality of rechargeable battery cells is damaged during the firing sequence based on at least one measurement performed by the at least one battery-cell health indicator; and

    step up an output voltage of the power pack to complete the firing sequence in response to a determination that the subset of the plurality of rechargeable battery cells is damaged.

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