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Oximeter sensor assembly with integral cable and encoder

  • US 5,069,213 A
  • Filed: 12/19/1989
  • Issued: 12/03/1991
  • Est. Priority Date: 04/29/1988
  • Status: Expired due to Term
First Claim
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1. An oximeter sensor assembly with integral cable comprising:

  • a thin elongated flexible sheet-like electrically insulating substrate strip having an integral end portion capable of flexibly wrapping at least partially around a human body part;

    a plurality of primary electrical conductors on said substrate strip;

    a light emitting electrical component and a light receiving electrical component mounted on said substrate strip at said end portion and electrically connected to respective said primary conductors, said light emitting electrical component emitting light capable of passing through a human body part, said light receiving electrical component receiving said light;

    encoding means on said substrate strip providing signals to the oximeter indicative of the known wavelength of said light emitting electrical component, said encoding means comprising a pair of auxiliary electrical conductors on said substrate strip and means for varying electrical conductivity therebetween comprising thin film resistive material deposited on said substrate between said auxiliary conductors;

    thin elongated sheet-like electrically insulating film means on said substrate strip covering said primary conductors and said encoding means.

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