Method and circuit for indicating quality and accuracy of physiological measurements
3 Assignments
0 Petitions
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.
331 Citations
61 Claims
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1-21. -21. (canceled)
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22. A sensor for detecting at least one physiological characteristic of a patient, comprising:
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a detector configured to detect signals indicative of the physiological characteristic; and
a memory storing data comprising at least one sensor specific boundary that is indicative of a confidence level of an estimate of the physiological characteristic determined from the signals, the memory being communicatively coupleable to a monitor to allow transmission of the data to the monitor. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A sensor for detecting at least one physiological characteristic of a patient, comprising:
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a detector adapted to detect signals indicative of the physiological characteristic; and
a memory storing data defining at least one sensor specific boundary that is indicative of a transition between a signal regime considered to be normal for the sensor in its usual application and a signal regime considered to be abnormal for the sensor in its usual application, the memory adapted to couple with a monitor to allow transmission of the boundary to the monitor. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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37. A method of manufacturing a sensor for detecting at least one physiological characteristic of a patient, comprising:
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providing a detector configured to detect signals indicative of the at least one physiological characteristic;
providing a memory storing data comprising at least one sensor specification boundary that is indicative of a confidence level of an estimate of the physiological characteristic determined from the signals, the memory being communicatively coupleable to a monitor to allow transmission of the data to the monitor.
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38. A method of manufacturing a sensor, comprising:
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providing a detector configured to detect signals from a patient that are indicative of a physiological characteristic of the patient;
providing a memory coupled with the sensor, the memory storing data defining at least one sensor signal specification boundary for 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, wherein the sensor signal specification boundary is characteristic of a model of the sensor or of individual components used in making the sensor; and
providing access to the memory to facilitate transmission of the data defining the at least one sensor signal specification boundary.
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39. A method of manufacturing a sensor, comprising:
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providing a detector for detecting signals from a patient that are indicative of a physiological characteristic;
providing a memory coupled to the sensor, the memory storing data defining at least one sensor signal specification boundary for detected signals, the sensor signal specification boundary being indicative of a quality of the signals and an accuracy of an estimate of the physiological characteristic estimated from the signals by a monitor, wherein the sensor signal specification boundary includes one or both of limits for an AC modulation component and limits for a DC component; and
providing an access to the memory to facilitate transmission of the data defining the sensor signal specification boundary to the monitor.
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40. A method of manufacturing a sensor, comprising:
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providing a detector configured to detect signals from a patient that are indicative of a physiological characteristic;
providing a memory coupled to the sensor, the memory storing 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, wherein the signal specification boundary is characteristic of a model of the sensor or of individual components used in the sensor; and
providing an access to the stored data to facilitate transmission of the data to a monitor.
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41. A method of operating a sensor for detecting at least one physiological characteristic of a patient, comprising:
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detecting signals from the patient that are indicative of the physiological characteristic;
accessing a memory of the sensor to facilitate transmission of data defining at least one sensor signal specification boundary, the sensor signal specification boundary being indicative of a quality of the signals and an accuracy of an estimate of the physiological characteristic.
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42. A method of operating a sensor for detecting at least one physiological characteristic, comprising:
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detecting signals from a patient that are indicative of the physiological characteristic;
accessing a memory to facilitate transmission of data defining at least one sensor signal specification boundary, 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, wherein the sensor signal specification boundary is characteristic of a model of the sensor or of individual components used in the sensor.
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43. A monitor for providing an indication of an accuracy of an estimated physiological condition of a patient, the monitor being coupleable to a sensor that detects signals indicative of at least one physiological characteristic of the patient, the monitor comprising:
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a first receiving circuit configured to receive the signals from the sensor;
a first processing circuit configured to provide an estimated physiological condition of the patient based on the signals;
a second receiving circuit configured to receive data defining at least one sensor signal specification boundary for the signals from the sensor, the sensor signal specification boundary being indicative of a quality of the signals and an accuracy of the estimated physiological characteristic; and
a second processing circuit configured to compare the signals against the at least one sensor signal specification boundary and to generate an indication of the accuracy of the estimated physiological condition. - View Dependent Claims (44, 45, 46, 47)
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48. A monitor for providing an indication of an accuracy of an estimated physiological condition of a patient, the monitor being coupleable to a sensor that detects signals indicative of at least one physiological characteristic of the patient, the monitor comprising:
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a first receiving circuit configured to receive the signals indicative of the at least one physiological characteristic from the sensor;
a first processing circuit configured to provide an estimated physiological condition of the patient based on the signals;
a second receiving circuit configured to receive data defining at least one sensor signal specification boundary for the 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 estimated physiological characteristic estimated from the signals, wherein the sensor signal specification 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; and
a second processing circuit configured to compare the signals against the sensor signal specification boundary and to generate an indication of the accuracy of the estimated physiological condition, wherein the second processing circuit is further configured to determine whether the signals are within the normal regime or the abnormal regime. - View Dependent Claims (49, 50, 51, 52, 53)
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54. A method of operating a monitor for providing an indication of an accuracy of an estimated physiological condition of a patient, comprising:
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receiving from a sensor signal indicative of at least one physiological characteristic;
determining the estimated physiological condition of the patient based on the signals;
receiving data defining at least one sensor signal specification boundary for the signals, the sensor signal specification boundary being indicative of a quality of the signals detected by the sensor and an accuracy of the estimated physiological characteristic estimated from the signals, wherein the at least one sensor signal specification 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;
comparing the signals against the sensor signal specification boundary;
generating an indication of the accuracy of the estimated physiological condition; and
determining whether the signals are within the normal regime or the abnormal regime. - View Dependent Claims (55)
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56. A method of operating a monitor for providing an indication of an accuracy of an estimated physiological condition of a patient, comprising:
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receiving from a sensor signals indicative of at least one physiological characteristic;
calculating an estimated physiological condition of the patient based on the signals;
receiving data from the sensor, the data defining at least one sensor signal specification boundary for the signals, the sensor signal specification boundary being indicative of a quality of the signals and an accuracy of the estimated physiological characteristic, wherein the sensor signal specification boundary includes limits for an AC modulation component and DC component of the signals;
comparing the signals with the sensor signal specification boundary;
generating an indication of the accuracy of the estimated physiological condition; and
determining whether the signals are within the normal regime or the abnormal regime. - View Dependent Claims (57)
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58. A method of manufacturing a monitor for providing an indication of an accuracy of an estimated physiological condition of a patient, the monitor being coupleable to a sensor that detects signals indicative of at least one physiological characteristic of the patient, comprising:
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providing a processing circuit configured determine an estimated physiological condition of the patient based on the signals, compare the signals against a sensor signal specification boundary, and generate an indication of the accuracy of the estimated physiological condition, wherein the processing circuit is further configured to determine whether the signals are within a normal regime or an abnormal regime; and
providing a receiving circuit configured to receive communications relating to the signals from the sensor and data defining the sensor signal specification boundary, the sensor signal specification boundary being indicative of a quality of the signals and the accuracy of the estimated physiological characteristic, wherein the sensor signal specification boundary includes limits for an AC modulation component and DC component of the signals.
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59. A method of manufacturing a monitor for providing an indication of an accuracy of an estimated physiological condition of a patient, the monitor being coupleable to a sensor that detects signals indicative of at least one physiological characteristic of the patient, comprising:
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providing a processing circuit configured to determine an estimated physiological condition of the patient based on the signals, compare the received signals with at least one sensor signal specification boundary, generate an indication of the accuracy of the estimated physiological condition, and determine whether the signals are within a normal regime for the sensor in its usual application or an abnormal regime for the sensor in its usual application;
providing a receiving circuit configured to receive communications relating to the signals from the sensor and receive data defining the sensor signal specification boundary for the 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 estimated physiological characteristic, wherein the sensor signal specification boundary is indicative of a transition between the normal regime and the abnormal regime.
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60. A system for detecting at least one physiological characteristic of a patient, comprising:
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a sensor, comprising;
a detector configured to detect signals that are indicative of the at least one physiological characteristic;
a memory coupled to the sensor, the memory storing data defining at least one sensor signal specification boundary for the signals, the sensor signal specification boundary being indicative of a quality of the signals and an accuracy of an estimated physiological characteristic, wherein the sensor signal specification boundary includes limits for an AC modulation component and DC component of the signals; and
an integrated circuit providing access to the memory to facilitate transmission of the data defining the at least one sensor signal specification boundary; and
a monitor, comprising;
a receiving circuit configured to receive communications relating to signals indicative of the at least one physiological characteristic from the sensor and data defining the at least one sensor signal specification boundary for the detected signals from the sensor; and
a processing circuit configured to determine the estimated physiological condition of the patient based on the signals, compare the signals against the at least one sensor signal specification boundary, generate the indication of the accuracy of the estimated physiological condition, and determine whether the received signals are within a normal signal regime or an abnormal signal regime.
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61. A system, for detecting at least one physiological characteristic of a patient, comprising:
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a sensor, comprising;
a detector configured to detect signals that are indicative of the physiological characteristic;
a memory coupled to the sensor, the memory storing 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 and being indicative of a quality of the signals detected by the sensor; and
an integrated circuit providing access to the memory to facilitate transmission of the data defining the at least one sensor signal specification boundary; and
a monitor, comprising;
a processing circuit configured to determine an estimated physiological condition of the patient based on the signals, compare the signals with the at least one sensor signal specification boundary, generate an indication of the accuracy of the estimated physiological condition, and determine whether the received signals are within the normal regime or the abnormal regime; and
a receiving circuit configured to receive communications from the sensor relating to the signals indicative of the at least one physiological characteristic and to receive data defining the at least one sensor signal specification boundary, the sensor signal specification boundary being indicative of an accuracy of the estimated physiological characteristic.
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Specification