Medical sensor and technique for using the same
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
a patterned region disposed on a tissue-contacting surface of the sensor body, the patterned region being configured to absorb, redirect, or diffract the light such that an incidence of shunted light reaching the detector is reduced, wherein the patterned region protrudes less than about 0.001 mm from the tissue-contacting surface of the sensor body.
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Abstract
A medical sensor may be adapted to account for factors that cause irregularities in pulse oximetry measurements or other spectrophotemetric measurements. Sensors are provided with surface 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 the effect of outside light or shunted light on pulse oximetry measurements.
936 Citations
20 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 a patterned region disposed on a tissue-contacting surface of the sensor body, the patterned region being configured to absorb, redirect, or diffract the light such that an incidence of shunted light reaching the detector is reduced, wherein the patterned region protrudes less than about 0.001 mm from the tissue-contacting surface of the sensor body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. 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; 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 a patterned region disposed on a tissue-contacting surface of the sensor body, the patterned region being configured to absorb, redirect, or diffract the light such that an incidence of shunted light reaching the detector is reduced, wherein the patterned region protrudes less than about 0.001 mm from the tissue-contacting surface of the sensor body. - View Dependent Claims (14)
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15. A method comprising:
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using a sensor; delivering a first light through a patient'"'"'s tissue; detecting the first light delivered through the tissue; and redirecting a second light that does not propagate through the tissue away from the detector using a patterned region on the sensor that is microscopic in scale. - View Dependent Claims (16)
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17. A method of manufacturing a sensor, the method comprising:
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providing a sensor body having a patterned region on a tissue-contacting surface of the sensor body, the patterned region being configured to absorb, redirect, or diffract light such that an incidence of shunted light reaching a detector is reduced, wherein the patterned region protrudes less than about 0.001 mm from the tissue-contacting surface of the sensor body; providing an emitter adapted to transmit the light into tissue; providing the detector adapted to detect the light; and assembling the emitter and the detector with the sensor body to form the sensor. - View Dependent Claims (18)
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19. A sensor comprising:
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a sensor body; an emitter disposed on the sensor body, wherein the emitter is adapted to transmit a light into tissue; a detector disposed on the sensor body, wherein the detector is adapted to detect the light; and a light diffracting material disposed on a tissue-contacting surface of the sensor body, wherein the light diffracting material is adapted to diffract impinging light emitted by the emitter into destructively interfering beams. - View Dependent Claims (20)
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Specification