SYSTEM AND METHOD FOR MONITORING THE LIFE OF A PHYSIOLOGICAL SENSOR
First Claim
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1. A reusable noninvasive physiological sensor configured to store sensor use information, the sensor comprising:
- a first and second emitter configured to emit light of at least two wavelengths through tissue;
a detector configured to sense the light after it has passed through the tissue and to generate a signal indicative of the sensed light;
a memory device configured to store at least one indication of sensor use information and a plurality of sensor life functions for use in determining the useful life of the sensor by a separately housed patient monitor; and
a communication port configured to communicate the signal, the at least one indication of sensor use information and at least one of the plurality of sensor life functions to the separately housed patient monitor, wherein the separately housed patient monitor calculates the useful life of the sensor using the at least one indication of sensor use information and the at least one of the plurality of sensor life functions received from the sensor.
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Abstract
Aspects of the present disclosure include a sensor configured to store in memory indications of sensor use information and formulas or indications of formulas for determining the useful life of a sensor from the indications of sensor use information. A monitor connected to the sensor monitors sensor use and stores indications of the use on sensor memory. The monitor and/or sensor compute the useful life of the sensor from the indications of use and the formulas. When the useful life of the sensor is reached, an indication is given to replace the sensor.
131 Citations
20 Claims
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1. A reusable noninvasive physiological sensor configured to store sensor use information, the sensor comprising:
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a first and second emitter configured to emit light of at least two wavelengths through tissue; a detector configured to sense the light after it has passed through the tissue and to generate a signal indicative of the sensed light; a memory device configured to store at least one indication of sensor use information and a plurality of sensor life functions for use in determining the useful life of the sensor by a separately housed patient monitor; and a communication port configured to communicate the signal, the at least one indication of sensor use information and at least one of the plurality of sensor life functions to the separately housed patient monitor, wherein the separately housed patient monitor calculates the useful life of the sensor using the at least one indication of sensor use information and the at least one of the plurality of sensor life functions received from the sensor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A patient monitor configured to determine a useful life of a noninvasive physiological sensor, the patient monitor comprising:
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a communication port configured to communicate with a sensor and receive a signal indicative of a physiological parameter, at least one indication of sensor use, and at least one sensor life function from the sensor; a digital signal processor configured to determine if a useful life of the sensor is exceeded using the at least one indication of sensor use and the at least one sensor life function received from the sensor and further configured to calculate a value of the physiological parameter using the signal; and a display configured to display the calculated value of the physiological parameter, and further configured to indicate the useful life of the sensor is exceeded upon the digital signal processor determining that the useful life of the sensor is exceeded. - View Dependent Claims (8, 9, 10, 11)
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12. A reusable noninvasive physiological sensor configured to store sensor use information, the sensor comprising:
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a first and second emitter configured to emit light of at least two wavelengths through tissue; a detector configured to sense the light after it has passed through the tissue and to generate a signal indicative of the sensed light; a memory device configured to store at least one indication of sensor use information and a plurality of indications of sensor life functions for use in determining the useful life of the sensor by a separately housed patient monitor; and a communication port configured to communicate the signal, the at least one indication of sensor use information and at least one of the plurality of indications of sensor life functions to the separately housed patient monitor, wherein the separately housed patient monitor calculates the useful life of the sensor using the at least one indication of sensor use information and at least one sensor life function indicated by the at least one of the plurality of indications of sensor life functions received from the sensor, wherein the at least one sensor life function is stored in the separately housed patient monitor. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of determining the useful life of a physiological sensor comprising a memory device, the method comprising:
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receiving at a sensor at least one indication of sensor use information from a separately housed patient monitor; storing the received at least one indication of sensor use information in a memory device of the sensor; receiving at the sensor a signal indicative of a physiological parameter; selecting a sensor life function from a plurality of sensor life functions stored in the memory device of the sensor; transmitting the stored at least one indication of sensor use information, the signal indicative of a physiological parameter, and the selected sensor life function to the separately housed patient monitor, wherein the separately housed patient monitor determines if a useful life of the sensor is exceeded using at least the at least one indication of sensor use information and the sensor life function received from the sensor. - View Dependent Claims (19, 20)
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Specification