Opaque, electrically nonconductive region on a medical sensor
First Claim
Patent Images
1. A sensor comprising:
- a sensor body;
an emitter disposed on the sensor body, wherein the emitter is adapted to transmit light into tissue;
a detector disposed on the sensor body, wherein the detector is adapted to detect the light; and
at least one opaque region disposed on a tissue-contacting surface of the sensor body, the opaque region comprising a substantially electrically nonconductive material.
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Abstract
A medical sensor may be adapted to prevent unwanted light and electrical interference from corrupting physiological measurements. Sensors are provided with features that reduce the amount of outside light or shunted light that impinge the detecting elements of the sensor. The sensor is adapted to reduce crosstalk between electrical signals, increasing the accuracy of measurements. The sensor is also adapted to reduce the effect of outside light or shunted light on pulse oximetry measurements.
120 Citations
36 Claims
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1. A sensor comprising:
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a sensor body; an emitter disposed on the sensor body, wherein the emitter is adapted to transmit light into tissue; a detector disposed on the sensor body, wherein the detector is adapted to detect the light; and at least one opaque region disposed on a tissue-contacting surface of the sensor body, the opaque region comprising a substantially electrically nonconductive material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A pulse oximetry system comprising:
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a pulse oximetry monitor; and a pulse oximetry sensor adapted to be operatively coupled to the monitor, the sensor comprising; a sensor body; and at least one opaque region disposed on a tissue-contacting surface of the sensor body, the opaque region comprising a substantially electrically nonconductive material. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method comprising:
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emitting light into tissue with an emitter; detecting the emitted light with a detector; absorbing light that has not been transmitted from the emitter through the tissue with at least one opaque region disposed on a sensor body, wherein the at least one opaque region comprises a substantially electrically nonconductive material; and measuring a physiological characteristic based on the detected light. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A method of manufacturing a sensor, comprising:
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providing a sensor body on which at least one emitter and at least one detector is disposed; and providing at least one opaque region disposed on a tissue-contacting surface of the sensor body, the opaque region comprising a substantially electrically nonconductive material. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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Specification