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Medical device automatic start-up upon contact to patient tissue

  • US 8,897,868 B2
  • Filed: 09/12/2008
  • Issued: 11/25/2014
  • Est. Priority Date: 09/14/2007
  • Status: Active Grant
First Claim
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1. A device for at least one of monitoring or treating a patient, the patient having a tissue, the device comprising:

  • a battery;

    circuitry to at least one of monitor or treat the patient, the circuitry comprising a processor;

    at least two electrodes configured to couple to the tissue of the patient;

    a first switch coupled to the at least two electrodes, the battery and the circuitry, the first switch configured to detect tissue coupling to the at least two electrodes and connect the battery to the circuitry to turn on the processor in response to tissue coupling to the at least two electrodes; and

    sustain circuitry comprising a second switch to connect the battery to the processor in response to a signal from the processor, such that power is sustained to the processor after the tissue is uncoupled from the at least two electrodes and the first switch opens.

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