Medical sensor for reducing motion artifacts and technique for using the same
First Claim
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1. A sensor comprising:
- a substantially annular or partially annular rigid sensor body configured to retain the sensor on a patient'"'"'s digit, wherein the sensor body forms a tissue-contacting surface of the sensor; and
an emitter and a detector disposed on the tissue-contacting surface of the sensor body, wherein the sensor body is adapted to hold the emitter and detector at a fixed optical distance relative to one another and relative to the patient'"'"'s digit when the sensor is attached to a patient and when the sensor experiences an external tapping force or when the digit applies a flexing force to the sensor.
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Abstract
A sensor for pulse oximetry or other applications utilizing spectrophotometry may be adapted to reduce motion artifacts by fixing the optical distance between an emitter and detector. A flexible sensor is provided with a stiffening member to hold the emitter and detector of the sensor in a relatively fixed position when applied to a patient. Further, an annular or partially annular sensor is adapted to hold an emitter and detector of the sensor in a relatively fixed position when applied to a patient. A clip-style sensor is provided with a spacer that controls the distance between the emitter and detector.
941 Citations
21 Claims
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1. A sensor comprising:
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a substantially annular or partially annular rigid sensor body configured to retain the sensor on a patient'"'"'s digit, wherein the sensor body forms a tissue-contacting surface of the sensor; and an emitter and a detector disposed on the tissue-contacting surface of the sensor body, wherein the sensor body is adapted to hold the emitter and detector at a fixed optical distance relative to one another and relative to the patient'"'"'s digit when the sensor is attached to a patient and when the sensor experiences an external tapping force or when the digit applies a flexing force to the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. 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 substantially annular or partially annular rigid sensor body configured to retain the sensor on a patient'"'"'s digit, wherein the sensor body forms a tissue-contacting surface of the sensor; and an emitter and a detector disposed on the tissue-contacting surface of sensor body, wherein the sensor body is adapted to hold the emitter and detector at a fixed optical distance relative to one another and relative to the patient'"'"'s digit when the sensor is attached to a patient and when the digit applies a flexing force to the sensor or when an external tapping force is applied to the sensor. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of manufacturing a pulse oximetry sensor adapted to be applied to a digit, comprising:
providing an annular or partially annular rigid sensor body configured to retain the sensor on the digit and wherein an emitter and a detector are disposed on the tissue-contacting surface of the sensor body, wherein the sensor body is adapted to hold the emitter and the detector at a fixed optical distance relative to each other and relative to the digit when the sensor experiences an external tapping force or when the digit applies a flexing force to the sensor. - View Dependent Claims (18, 19, 20, 21)
Specification