Circuitry and sensors for powered medical device

  • US 10,111,679 B2
  • Filed: 09/05/2014
  • Issued: 10/30/2018
  • Est. Priority Date: 09/05/2014
  • Status: Active Grant
First Claim
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1. An electronic system for a surgical instrument, the electronic system comprising:

  • a main power supply circuit configured to supply electrical power to a primary circuit;

    a supplementary power supply circuit configured to supply electrical power to a secondary circuit; and

    a short circuit protection circuit coupled between the main power supply circuit and the supplementary power supply circuit;

    wherein the short circuit protection circuit is configured to lockout the firing of the surgical instrument after a short circuit event;

    wherein the supplementary power supply circuit is configured to isolate itself from the main power supply circuit after the supplementary power supply circuit detects a short circuit condition at the secondary circuit; and

    wherein the supplementary power supply circuit is configured to rejoin the main power supply circuit and supply power to the secondary circuit, after the short circuit condition ends.

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