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Systems and methods for indicating an amount of use of a sensor

  • US 7,910,875 B2
  • Filed: 03/06/2007
  • Issued: 03/22/2011
  • Est. Priority Date: 08/26/1999
  • Status: Expired due to Fees
First Claim
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1. A method of determining an amount of use of a medical sensor capable of communicating signals indicative of physiological parameters of a patient to a medical monitoring device, the method comprising:

  • monitoring transitions from a medical monitoring device, said transitions usable to activate one or more light sources of a medical sensor, said light sources configured to irradiate tissue of a monitored patient;

    applying a sensor life formula to at least the transitions to determine a cumulative use indication indicative of an amount of use of the medical sensor;

    storing data related to said sensor life formula in a memory;

    when said use indication is above a threshold, indicating to a caregiver that at least a portion of said medical sensor has expired.

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