Activity monitor and six-minute walk test for depression and CHF patients
First Claim
1. An implantable device for automatically monitoring and reporting patient physical activity, the device comprising:
- at least one implantable sensor operative to provide information related to patient movement;
a processor in communication with the at least one implantable sensor, wherein the processor is operative to evaluate the information provided by the at least one sensor, automatically determine when the at least one sensor is indicating patient movement in excess of a threshold value, and automatically determine a maximum equivalent quantified activity during a determined interval;
memory in communication with the sensor to receive and store data related to the patient'"'"'s movement, including the maximum equivalent quantified activity; and
a telemetry circuit in communication with the memory and operative to transmit internally determined data related to the patient'"'"'s activity;
wherein the sensor comprises an accelerometer; and
wherein the device double integrates an acceleration signal from the sensor to determine a distance traveled by the patient so as to automatically determine the maximum equivalent quantified activity during the determined interval.
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Accused Products
Abstract
An implantable device that can automatically monitor and record patient activity as sensed by an activity monitor. In certain variations, the activity monitor can include an accelerometer providing three-axis acceleration signals and in other variations the activity sensor can include a position sensor, such as a GPS receiver. The implantable device automatically determines if patient activity exceeds a determined threshold and monitors and records a total equivalent distance traveled for a determined period, which may be set equal to a standard measure such as a six minute period. The device can monitor and record multiple periods of activity and the periods may be consecutive, overlapping, and/or separate in time. The device may store all activity records or selected records which may correspond to daily, weekly, or other periodic maxima.
108 Citations
29 Claims
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1. An implantable device for automatically monitoring and reporting patient physical activity, the device comprising:
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at least one implantable sensor operative to provide information related to patient movement; a processor in communication with the at least one implantable sensor, wherein the processor is operative to evaluate the information provided by the at least one sensor, automatically determine when the at least one sensor is indicating patient movement in excess of a threshold value, and automatically determine a maximum equivalent quantified activity during a determined interval; memory in communication with the sensor to receive and store data related to the patient'"'"'s movement, including the maximum equivalent quantified activity; and a telemetry circuit in communication with the memory and operative to transmit internally determined data related to the patient'"'"'s activity; wherein the sensor comprises an accelerometer; and wherein the device double integrates an acceleration signal from the sensor to determine a distance traveled by the patient so as to automatically determine the maximum equivalent quantified activity during the determined interval.
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2. An implantable device for automatically monitoring and reporting patient physical activity, the device comprising:
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at least one implantable sensor operative to provide information related to patient movement; a processor in communication with the at least one implantable sensor, wherein the processor is operative to evaluate the information provided by the at least one sensor, automatically determine when the at least one sensor is indicating patient movement in excess of a threshold value, and automatically determine a maximum equivalent quantified activity during a determined period; memory in communication with the sensor to receive and store data related to the patient'"'"'s movement, including the maximum equivalent quantified activity; and a telemetry circuit in communication with the memory and operative to transmit internally determined data related to the patient'"'"'s activity; wherein determining the maximum equivalent quantified activity during the determined period comprises determining a maximum equivalent distance walked. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of automatically determining indices of a patient'"'"'s physical activity and reporting the same with an implantable device, the method comprising:
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internally measuring a parameter indicative of patient movement; determining whether the measurement of patient movement exceeds a threshold indicating patient movement of sufficient intensity and duration to indicate further evaluation; calculating an equivalent exertion index for a determined interval; recording at least one equivalent exertion index; and providing the at least one equivalent exertion index to an external device; wherein calculating an equivalent exertion index for a determined interval comprises calculating an equivalent distance walked during the determined interval. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A system for automatically monitoring patient physical activity and for evaluating the same, the system comprising:
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an implantable device comprising; means for sensing information related to patient movement; processing means for evaluating information provided by the sensing means to determine when patient movement in excess of a threshold value is indicated, the processing means further comprising means for determining a maximum equivalent quantified activity during a determined interval; and data storage means in communication with the processing means for storing data related to the maximum equivalent quantified activity determined over time; an external device comprising display means for displaying information received from the implantable device; and means for telemetering data between the implantable device and the external device such that the data stored in the implantable device may be selectively transmitted to the external device for displays wherein the means for determining a maximum equivalent quantified activity during a determined interval comprises determining a maximum equivalent distance walked. - View Dependent Claims (27, 28, 29)
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Specification