Implantable medical device monitoring method and system regarding same
First Claim
1. An implantable medical device monitoring method, the method comprising the steps of:
- providing at least one sensor output signal to an implantable medical device;
providing chronic data representative of at least one physiological parameter based on the at least one sensor output signal;
establishing a baseline representative of an initial state of the at least one physiological parameter using chronic data provided in an initial sample time period;
monitoring the chronic data to detect a change in state of the at least one physiological parameter relative to the baseline;
storing data associated with a detected change in state of the at least one physiological parameter within the implantable medical device;
reestablishing the baseline for the at least one physiological parameter if a change in state is detected, wherein the baseline is reestablished using chronic data available upon or after detection of the change of state; and
repeating the monitoring, storing, and reestablishing steps.
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Abstract
An implantable medical device monitoring method and system monitors chronic data representative of at least one physiological parameter. The chronic data is monitored to detect changes in state of the at least one physiological parameter. Data associated with detected changes in state is stored within the implantable medical device. The detection of changes in state of the at least one physiological parameter is performed by establishing a baseline (e.g., a center reference line and upper and lower control limits), and then determining if the chronic data being monitored satisfies predetermined conditions (e.g., conditions based on the center reference line and the upper and lower control limits) indicative of a change in state of the at least one physiological parameter. The data stored in memory associated with the detected change in state of the at least one physiological parameter may, for example, include data representative of the center reference line and/or upper and lower control limits.
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Citations
41 Claims
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1. An implantable medical device monitoring method, the method comprising the steps of:
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providing at least one sensor output signal to an implantable medical device; providing chronic data representative of at least one physiological parameter based on the at least one sensor output signal; establishing a baseline representative of an initial state of the at least one physiological parameter using chronic data provided in an initial sample time period; monitoring the chronic data to detect a change in state of the at least one physiological parameter relative to the baseline; storing data associated with a detected change in state of the at least one physiological parameter within the implantable medical device; reestablishing the baseline for the at least one physiological parameter if a change in state is detected, wherein the baseline is reestablished using chronic data available upon or after detection of the change of state; and repeating the monitoring, storing, and reestablishing steps. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An implantable medical device monitoring method, the method comprising:
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providing chronic data to an implantable medical device representative of at least one physiological parameter; monitoring the chronic data to detect changes in state of the at least one physiological parameter; storing data associated with detected changes in state within the implantable medical device; and discarding the chronic data monitored to detect changes in state of the at least one physiological parameter. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. An implantable monitoring system for monitoring at least one physiological parameter, the system comprising:
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at least one sensor to provide an output signal representative of the at least one physiological parameter; and an implantable monitoring device having memory to store data, wherein the implantable monitoring device further includes; means for receiving the at least one sensor output signal and generating chronic data representative of the at least one physiological parameter; and processing means for monitoring the chronic data to detect changes in state of the at least one physiological parameter and for storing data associated with detected changes in state in the memory of the implantable monitoring device, the processing means including; means for establishing a baseline representative of an initial state of the at least one physiological parameter using a plurality of sample points representative of chronic data in an initial sample time interval; means for detecting changes in state of the at least one physiological parameter relative to the baseline; and means for reestablishing the baseline for the at least one physiological parameter if a change in state is detected, wherein the baseline is reestablished using chronic data available upon or after detection of the change of state. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification