Method and circuit for indicating quality and accuracy of physiological measurements
First Claim
1. A system comprising a sensor and a monitor for sensing at least one physiological characteristic of a patient, the sensor being connectable to a monitor that estimates a physiological characteristic from signals detected by the sensor, the sensor comprising:
- a detector for detecting the signals from the patient which are indicative of the physiological characteristic;
a memory connected with the sensor, said memory being physically located on one of a sensor body, sensor cable, sensor connecting plug or a sensor adapter module, and said memory being configured to store data defining at least one sensor signal specification boundary for the detected signals, the sensor signal specification boundary being indicative of a quality of the signals and an accuracy of the physiological characteristic estimated from the signals by the monitor, wherein the sensor signal specification boundary includes limits for an AC modulation component and DC component of the signals; and
means for providing access to the memory to allow transmission of the data defining the at least one sensor boundary to the monitor;
wherein the monitor determines to display or not display the estimate of the physiological characteristic based on the signals and their relationship relative to a plurality of sensor signal specification boundaries and to a plurality of monitor boundaries preprogrammed into the monitor.
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Accused Products
Abstract
Sensors and monitors for a physiological monitoring system having capability to indicate an accuracy of an estimated physiological condition. The sensor senses at least one physiological characteristic of a patient and is connectable to a monitor that estimates the physiological condition from signals detected by the sensor. The sensor includes a detector for detecting the signals from the patient which are indicative of the physiological characteristic. The sensor is associated with a memory configured to store data that defines at least one sensor signal specification boundary for the detected signals. The boundary is indicative of a quality of the signals and an accuracy of the physiological characteristic estimated from the signals by the monitor. The sensor further includes means for providing access to the memory to allow transmission of the data that defines the at least one sensor boundary to the monitor.
100 Citations
12 Claims
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1. A system comprising a sensor and a monitor for sensing at least one physiological characteristic of a patient, the sensor being connectable to a monitor that estimates a physiological characteristic from signals detected by the sensor, the sensor comprising:
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a detector for detecting the signals from the patient which are indicative of the physiological characteristic; a memory connected with the sensor, said memory being physically located on one of a sensor body, sensor cable, sensor connecting plug or a sensor adapter module, and said memory being configured to store data defining at least one sensor signal specification boundary for the detected signals, the sensor signal specification boundary being indicative of a quality of the signals and an accuracy of the physiological characteristic estimated from the signals by the monitor, wherein the sensor signal specification boundary includes limits for an AC modulation component and DC component of the signals; and means for providing access to the memory to allow transmission of the data defining the at least one sensor boundary to the monitor; wherein the monitor determines to display or not display the estimate of the physiological characteristic based on the signals and their relationship relative to a plurality of sensor signal specification boundaries and to a plurality of monitor boundaries preprogrammed into the monitor. - View Dependent Claims (2, 3, 4, 5)
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6. A monitor for providing an indication of an accuracy of an estimated physiological condition of a patient, the monitor being connectable to a sensor that detects signals indicative of at least one physiological characteristic of the patient, the monitor comprising:
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a receiving circuit configured to receive the signals indicative of the at least one physiological characteristic from the sensor and data defining at least one sensor signal specification boundary for the detected signals from the sensor, the sensor signal specification boundary being indicative of a quality of the signals detected by the sensor and an accuracy of the physiological characteristic estimated from the detected signals, wherein the at least one sensor boundary is indicative of a transition between a signal regime considered normal for the sensor in its usual application and a signal regime considered to be abnormal; a processing circuit configured to estimate the physiological condition of the patient based on the received signals, compare the received signals against the at least one sensor boundary, and generate the indication of the accuracy of the estimated physiological condition, wherein the processing circuit is further configured to determine whether the received signals are within the normal regime or the abnormal regime; and means for providing the indication of the accuracy of the estimated physiological condition to a user of the monitor, wherein said processing circuit determines to display or not display the estimate of the physiological characteristic based on the signals and their relationship relative to a plurality of sensor signal specification boundaries and to a plurality of monitor boundaries preprogrammed into the monitor. - View Dependent Claims (7, 8)
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9. A system comprising a sensor and a monitor for sensing at least one physiological characteristic of a patient, the sensor being connectable to a monitor that estimates the physiological characteristic from signals detected by the sensor, the sensor comprising:
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a detector for detecting the signals from the patient which are indicative of the physiological characteristic; a memory connected with the sensor, said memory being physically located on one of a sensor body, sensor cable, sensor connecting plug or a sensor adapter module, and said memory being configured to store data defining at least one sensor signal specification boundary for the detected signals, the sensor signal specification boundary being indicative of a transition between a signal regime considered normal for the sensor in its usual application, and a signal regime considered to be abnormal, in which said sensor signal specification boundary is characteristic of a model of the sensor, and said boundary is characteristic of individual components used in making the sensor; and means for providing access to the memory to allow transmission of the data defining the at least one sensor boundary to the monitor, wherein the monitor determines to display or not display the estimate of the physiological characteristic based on the signals and their relationship relative to a plurality of sensor signal specification boundaries and to a plurality of monitor boundaries preprogrammed into the monitor. - View Dependent Claims (10, 11, 12)
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Specification