Smart cartridge wake up operation and data retention

  • US 10,135,242 B2
  • Filed: 09/05/2014
  • Issued: 11/20/2018
  • 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 microprocessor;

    a supplementary power supply circuit configured to supply electrical power to a sensor via electrical conductors, wherein the supplementary power supply circuit comprises a pair of transistors configured to control the electrical power supply to the sensor; and

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

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

    wherein the supplementary power supply circuit is configured to rejoin the main power supply circuit and supply power to the sensor, when the short circuit condition is remedied, andwherein the short circuit protection circuit is configured to lockout the firing of the surgical instrument when a short circuit event is indicated.

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