Shunt barrier in pulse oximeter sensor
First Claim
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1. A sensor comprising:
- a substrate layer;
a light emitter coupled to the substrate layer;
a light detector coupled to the substrate layer; and
a partially opaque layer disposed over the light emitter, the partially opaque layer having a substantially uniform optical density for absorbance of light from the light emitter, the partially opaque layer being configured to attenuate light shunted through a length of the partially opaque layer oriented along a path from the light emitter to the light detector and to pass light from the light emitter through a thickness of the partially opaque layer oriented directly over the light emitter.
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Abstract
A pulse oximeter sensor comprising an emitter and a detector coupled to a substrate layer and a partially opaque layer located on a patient contact side of the sensor and covering the emitter. The partially opaque layer is configured to attenuate light shunted via the partially opaque layer from the emitter to the detector, and may be configured such that less than 10% of the light detected by the detector is shunted light.
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Citations
36 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; and a partially opaque layer disposed over the light emitter, the partially opaque layer having a substantially uniform optical density for absorbance of light from the light emitter, the partially opaque layer being configured to attenuate light shunted through a length of the partially opaque layer oriented along a path from the light emitter to the light detector and to pass light from the light emitter through a thickness of the partially opaque layer oriented directly over the light emitter. - 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 first layer, wherein one end of the first layer comprises a location for a light emitter and another end of the first layer comprises for a location for a light detector; and a partially opaque layer having a substantially uniform optical density for absorbance of light from the light emitter coupled to the first layer over the location for the light emitter, wherein the partially opaque layer is configured to attenuate light shunted through a length of the partially opaque layer oriented along a path from the location for the light emitter to the location for the light detector and configured to pass light from the location for the light emitter through a thickness of the partially opaque layer oriented directly over the location for the light emitter. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A method of manufacturing a sensor comprising:
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providing a substrate layer; providing a light emitter coupled to the substrate layer and a light detector coupled to the substrate layer; and providing a partially opaque layer disposed over the light emitter, the partially opaque layer having a substantially uniform optical density for absorbance of light from the light emitter, and further comprising a length, a width, and a thickness, the length being generally greater than the width, and the width being generally greater than the thickness, wherein the length of the partially opaque layer extends generally between the light emitter and the light detector and is configured to attenuate light shunted from the light emitter to the light detector, and wherein the thickness of the partially opaque layer is configured to pass light emitted from the light emitter. - View Dependent Claims (23, 24, 25, 26, 27)
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28. 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 partially opaque layer to the sensor over the light emitter, the partially opaque layer having a substantially uniform optical density for absorbance of light from the light emitter, wherein the partially opaque layer is configured such that light from the light emitter passes through a thickness of the partially opaque layer oriented directly over the light emitter, and wherein the partially opaque layer is configured to attenuate light shunted through a length of the partially opaque layer oriented along a path from the light emitter to the light detector. - View Dependent Claims (29, 30, 31)
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32. A method of operating a sensor comprising:
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emitting light at a patient through a partially opaque layer with a light emitter, the partially opaque layer being disposed over the light emitter and having a substantially uniform optical density for absorbance of light from a light emitter, the partially opaque layer further having a length, a width, and a thickness, the length being generally greater than the width, and the width being generally greater than the thickness, wherein the thickness of the partially opaque layer is configured to pass light emitted from the emitter; and detecting light from the patient with a light detector, wherein the length of the partially opaque layer extends generally between the light emitter and the light detector so as to attenuate light shunted from the light emitter to the light detector. - View Dependent Claims (33, 34, 35, 36)
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Specification