Shunt barrier in pulse oximeter sensor
First Claim
Patent Images
1. A sensor comprising:
- a substrate layer;
a light emitter coupled to the substrate layer;
a light detector coupled to the substrate layer;
a second layer coupled to the substrate layer over the light emitter; and
a third layer coupled to the substrate layer over the light detector, wherein a portion of the second layer and a portion of the third layer overlap between the light emitter and the light detector.
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Abstract
A pulse oximeter sensor comprising an emitter and a detector disposed on a substrate layer with a thinned portion between the emitter and the detector. A partially transparent covering layer covers the substrate layer and comprises a corresponding thinned portion. The thinned portions attenuate light shunted via the substrate layer and the partially transparent covering layer from the emitter to the detector, and may be configured such that less than 10% of the light detectable by the detector is shunted light.
55 Citations
35 Claims
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1. A sensor comprising:
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a substrate layer;
a light emitter coupled to the substrate layer;
a light detector coupled to the substrate layer;
a second layer coupled to the substrate layer over the light emitter; and
a third layer coupled to the substrate layer over the light detector, wherein a portion of the second layer and a portion of the third layer overlap between the light emitter and the light detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A sensor substrate comprising:
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a base layer, wherein one end of the base layer comprises a location for a light emitter, and another end of the base layer comprises a location for a light detector;
a second layer coupled to the base layer over the location for the light emitter; and
a third layer coupled to the base layer over the location for the light detector, wherein a portion of the second layer and a portion of the third layer overlap between the location for the light emitter and the location for the light detector. - View Dependent Claims (15, 16, 17, 18)
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19. A method of manufacturing a sensor comprising:
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providing a light detector coupled to a substrate layer and a light emitter coupled to the substrate layer;
providing a second layer coupled to the substrate layer over the light emitter;
providing a third layer coupled to the substrate layer over the light detector, wherein a portion of the second layer and a portion of the third layer overlap between the light emitter and the light detector. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A method of remanufacturing a sensor comprising:
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providing a sensor comprising a substrate, a light emitter coupled the substrate, and a light detector coupled to the substrate;
coupling a first layer to the substrate over the light emitter; and
coupling a second layer to the substrate over the light detector, wherein a portion of the first layer and a portion of the second layer overlap between the light emitter and the light detector. - View Dependent Claims (26, 27)
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28. A method of operating a sensor comprising:
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emitting light at a patient with a light emitter coupled to a first layer; and
detecting light from the patient with a light detector coupled to a second layer, wherein a portion of the first layer and a portion of the second layer between the light emitter and the light detector overlap to form a shunt barrier, wherein the shunt barrier attenuates light shunted from the light emitter to the light detector. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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Specification