Shunt barrier in pulse oximeter sensor
First Claim
Patent Images
1. A sensor comprising:
- an emitter;
a detector; and
a substrate comprising one or more layers under or over the emitter and the detector, the substrate comprising at least one removed portion between the emitter and the detector that extends less than an entire width of the substrate.
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Abstract
A pulse oximeter sensor having an emitter(s) and a detector, with a layer having a first portion of the emitter and a second portion of layer over the detector is provided. A barrier is included between the first and second portions of the overlying layer to substantially block radiation of the wavelengths emitted by the emitter(s). Preferably, the barrier reduces the radiation shunted to less than 10% of the radiation detected, and more preferably to less than 1% of the radiation detected.
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Citations
23 Claims
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1. A sensor comprising:
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an emitter;
a detector; and
a substrate comprising one or more layers under or over the emitter and the detector, the substrate comprising at least one removed portion between the emitter and the detector that extends less than an entire width of the substrate. - View Dependent Claims (2, 3)
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4. A sensor comprising:
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an emitter;
a detector; and
a layer under or over the emitter and the detector, the layer comprising a width and a break between the emitter and the detector that is less than the width of the layer. - View Dependent Claims (5, 6)
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7. A sensor comprising:
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an emitter;
a detector;
a plurality of layers that are capable of transmitting light emitted by the emitter; and
shunt attenuating material comprising a portion that lies between the emitter and the detector, wherein the shunt attenuating material is capable of attenuating light emitted by the emitter that passes through one or more of the plurality of layers, such that less than 10% of the light detected by the detector is shunted light. - View Dependent Claims (8, 9, 10)
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11. A method of manufacturing a sensor comprising:
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providing an emitter and a detector;
providing one or more layers coupled to the emitter and the detector, wherein the one or more layers comprises a removed portion between the emitter and the detector. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of operating a sensor comprising:
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emitting light with an emitter coupled to one or more layers; and
detecting at least a portion of the light emitted by the emitter with a detector coupled to the one or more layers, wherein less than 10% of the light detected by the detector is light shunted through the one or more layers. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification