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Shunt barrier in pulse oximeter sensor

  • US 6,430,423 B2
  • Filed: 12/28/2000
  • Issued: 08/06/2002
  • Est. Priority Date: 03/05/1996
  • Status: Expired due to Term
First Claim
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1. A sensor comprising:

  • at least one emitter;

    a detector;

    a covering layer having a first portion over the emitter and a second portion over the detector;

    a shunt barrier positioned between said first and second portions of said covering layer to substantially block radiation of the wavelengths emitted by said emitter, such that less than 10% of the radiation detected by said detector is shunted radiation, said shunt barrier extending across a width of said sensor being entirely contained between any emitter, including said at least one emitter, and said detector, wherein said shunt barrier comprises a break between said first and second portions of said covering layer, with one of said first and second portions having an end overlying the other of said first and second portions.

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