Method for monitoring sensor degradation, patient monitor, patient monitor system, physiological sensor, and computer program product for a patient monitor
First Claim
1. A method for monitoring degradation of a physiological sensor, the method comprising:
- collecting history data for at least one sensor feature parameter into a predetermined memory location, wherein the collected history data includes measurements of past operational characteristics of a physiological sensor;
retrieving the history data from the predetermined memory location when the physiological sensor is connected to a patient monitor, wherein the retrieving is performed by the patient monitor;
determining, based on the history data, a degradation measure for the physiological sensor, wherein the degradation measure is a measure of the operational degradation of the physiological sensor and wherein the determining is carried out in the patient monitor; and
determining life expectancy of the physiological sensor based on the degradation measure.
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Abstract
A method for monitoring degradation a physiological sensor connected to a patient monitor is disclosed. A patient monitor, a patient monitor system, a physiological sensor, and a computer program product are also disclosed. In order to get an early warning of an imminent breakage or wear out of a physiological sensor and to increase the life time of the sensor without compromising patient safety, history data is collected for at least one sensor feature parameter into a predetermined memory location, wherein the collected history data is indicative of past characteristics of the sensor. The history data is retrieved from the predetermined memory location when the physiological sensor is connected to a patient monitor and a degradation measure indicative of the degree of degradation of the physiological sensor is determined for the physiological sensor based on the history data.
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Citations
20 Claims
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1. A method for monitoring degradation of a physiological sensor, the method comprising:
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collecting history data for at least one sensor feature parameter into a predetermined memory location, wherein the collected history data includes measurements of past operational characteristics of a physiological sensor; retrieving the history data from the predetermined memory location when the physiological sensor is connected to a patient monitor, wherein the retrieving is performed by the patient monitor; determining, based on the history data, a degradation measure for the physiological sensor, wherein the degradation measure is a measure of the operational degradation of the physiological sensor and wherein the determining is carried out in the patient monitor; and determining life expectancy of the physiological sensor based on the degradation measure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A patient monitor for monitoring a subject, the patient monitor comprising:
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a data retrieval unit configured to retrieve history data of at least one sensor feature parameter from a predetermined memory location, wherein the history data includes measurement of past operational characteristics of a physiological sensor connected to the patient monitor; a degradation determination unit configured to determine, based on the history data, a degradation measure for the physiological sensor, wherein the degradation measure is a measure of operational degradation of the physiological sensor connected to the patient monitor; and a decision making unit configured to automatically permit or prohibit use of the physiological sensor based on the degradation measure. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A physiological sensor attachable to a subject for acquiring a physiological measurement signal from the subject, the physiological sensor comprising:
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a sensor element unit configured to output an electrophysiological signal; a sensor memory storing history data for at least one sensor feature parameter, wherein the history data includes measurements of past operational characteristics of a physiological sensor; a memory access interface for enabling a patient monitor operably connected to the sensor to retrieve the history data for determination of a degradation measure for the physiological sensor, wherein the degradation measure is a measure of the operational degradation of the physiological sensor, and for determination of a life expectancy of the physiological sensor based on the degradation measure; and wherein the sensor memory further stores the life expectancy of the physiological sensor. - View Dependent Claims (16)
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17. A method for monitoring degradation of a physiological sensor, the method comprising:
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collecting history data for at least one sensor feature parameter into a predetermined memory location, wherein the collected history data includes measurements of past operational characteristics of a physiological sensor; retrieving the history data from the predetermined memory location when the physiological sensor is connected to a patient monitor, wherein the retrieving is performed by the patient monitor; determining, based on the history data, a degradation measure for the physiological sensor, wherein the degradation measure is a measure of the operational degradation of the physiological sensor and wherein the determining is carried out in the patient monitor; determining acceptability of the physiological sensor based on the degradation measure; and prohibiting use of the physiological sensor if the physiological sensor is not acceptable. - View Dependent Claims (18, 19, 20)
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Specification