Shunt barrier in pulse oximeter sensor
First Claim
Patent Images
1. A sensor comprising:
- a light emitter;
a light detector; and
a layer coupled to the light emitter and the light detector, wherein a portion of the layer located between the light emitter and the light detector comprises a plurality of holes, wherein the plurality of holes is disposed only between the light emitter and the light detector in an overlapping pattern with respect to all direct paths extending between the light emitter and the light detector.
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Abstract
A pulse oximeter sensor comprising a light emitter and a detector disposed on a substrate layer with a plurality of perforations or variations in thickness between the light emitter and the detector. The plurality of perforations or variations in thickness blocks or scatters light shunted via the substrate layer from the light emitter to the detector, and may be configured such that less than 10% of the light detectable by the detector is shunted light.
39 Citations
42 Claims
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1. A sensor comprising:
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a light emitter; a light detector; and a layer coupled to the light emitter and the light detector, wherein a portion of the layer located between the light emitter and the light detector comprises a plurality of holes, wherein the plurality of holes is disposed only between the light emitter and the light detector in an overlapping pattern with respect to all direct paths extending between the light emitter and the light detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A sensor substrate comprising:
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a layer, wherein one end of the layer comprises a location for a light emitter and another other end of the layer comprises a location for a light detector; and a plurality of holes disposed in the layer only between the location for the light emitter and the location for the light detector in an overlapping pattern with respect to all direct paths extending between the light emitter and the light detector, wherein the plurality of holes is configured to attenuate light shunted from the location for the light emitter to the location for the light detector. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method of manufacturing a sensor comprising:
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providing a light emitter; providing a light detector; and providing a layer coupled to the light emitter and the light detector, wherein a portion of the layer located between the light emitter and the light detector comprises a plurality of holes disposed only between the light emitter and the light detector in an overlapping pattern with respect to all direct paths extending between the light emitter and the light detector. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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37. A method of remanufacturing a sensor comprising:
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providing a sensor comprising a substrate, a light emitter coupled to the substrate, and a light detector coupled to the substrate; and coupling a layer to the sensor, wherein a portion of the layer located between the light emitter and the light detector comprises a plurality of holes, wherein the plurality of holes is disposed only between the light emitter and the light detector in an overlapping pattern with respect to all direct paths extending between the light emitter and the light detector. - View Dependent Claims (38, 39)
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40. A method of operating a sensor comprising:
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emitting light at a patient with a light emitter coupled to a layer; and detecting light from the patient with a light detector coupled to the layer, wherein the layer comprises a plurality of holes between the light emitter and the light emitter, wherein the plurality of holes is disposed only between the light emitter and the light detector in an overlapping pattern with respect to all direct paths extending between the light emitter and the light detector, and wherein the plurality of holes is configured to attenuate light shunted from the light emitter to the light detector. - View Dependent Claims (41, 42)
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Specification