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PULSE OXIMETER ACCESS APPARATUS AND METHOD

  • US 20090137885A1
  • Filed: 01/27/2009
  • Published: 05/28/2009
  • Est. Priority Date: 11/05/2003
  • Status: Active Grant
First Claim
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1. A pulse oximeter comprising:

  • an unauthorized sensor having emitters adapted to transmit light of at least first and second wavelengths into a fleshy medium and a light sensitive detector adapted to generate at least first and second intensity signals by detecting the light after absorption by constituents of pulsatile blood flowing within the fleshy medium;

    a monitor configured to non-invasively measure at least one physiological parameter responsive to magnitudes of said intensity signals;

    a key containing access information, said key at one time being an integral part of an authorized sensor different from said unauthorized sensor;

    a sensor port configured to communicate emitter drive signals from said monitor to said unauthorized sensor, said intensity signals from said unauthorized sensor to said monitor, and access information from said key to said monitor;

    a lock associated with said sensor port adapted to read said access information from said key and to enable said monitor to provide measurements of said at least one physiological parameter in response to said access information; and

    an adapter cable configured to provide a communications link between said unauthorized sensor and said sensor port, said adapter cable including said key.

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