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Calibrated optical oximeter probe

  • US 4,770,179 A
  • Filed: 10/19/1987
  • Issued: 09/13/1988
  • Est. Priority Date: 09/02/1982
  • Status: Expired due to Term
First Claim
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1. An oximeter for use with a probe having a first light emitting means emitting light having a first known wavelength value, means for sensing the light emitted by said first light emitting means and for generating a signal representative of the light sensed, means for detachably wiring the probe to the oximeter and for providing communication of electrical signals between the probe and the oximeter including said signal representative of the light sensed, and encoding means for providing first encoded signals to the oximeter which are indicative of the known wavelength value of said first light emitting means, said oximeter comprising:

  • processing means for operating on said signal representative of the light sensed, using appropriate coefficients, for determining oxygen saturation; and

    decoding means responsive to said first encoded signals for selecting said appropriate coefficients based upon the known wavelength of the first light emitting means.

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