Spatial configuration of a motion sensor in an implantable medical device
First Claim
1. A method of operation in an implantable device configured for placement inside the heart of a patient, the implantable device comprising a motion sensor, the method comprising:
- selecting a first parameter;
observing at least first and second outputs of the motion sensor, the first and second outputs relating to respective first and second axes of measurement for the motion sensor;
correlating at least one of the at least first and second outputs, or a combination thereof, to the first parameter;
storing a first configuration of the at least first and second outputs of the motion detector for measuring the first parameter;
applying the first configuration to outputs of the motion sensor to monitor characteristics of the first parameter.
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Accused Products
Abstract
Implantable devices having motion sensors. In some examples the a configuration is generated for the implantable device to use the motion sensor in an energy preserving mode in which one or more axis of detection of the motion sensor is disabled or ignored. In some examples the motion sensor outputs along multiple axes are analyzed to determine which axes best correspond to certain patient parameters including patient motion/activity and/or cardiac contractility. In other examples the output of the motion sensor is observed across patient movements or postures to develop conversion parameters to determine a patient standard frame of reference relative to outputs of the motion sensor of an implanted device.
999 Citations
19 Claims
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1. A method of operation in an implantable device configured for placement inside the heart of a patient, the implantable device comprising a motion sensor, the method comprising:
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selecting a first parameter; observing at least first and second outputs of the motion sensor, the first and second outputs relating to respective first and second axes of measurement for the motion sensor; correlating at least one of the at least first and second outputs, or a combination thereof, to the first parameter; storing a first configuration of the at least first and second outputs of the motion detector for measuring the first parameter; applying the first configuration to outputs of the motion sensor to monitor characteristics of the first parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An implantable medical device comprising:
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a power source; a plurality of electrodes for use in one or more of biological signal monitoring or providing an electrical therapy; a motion sensor having at least first and second axes of sensitivity; and operational circuitry configured to control the use of the electrodes and motion sensor for one or more of;
capturing biological signal data, capturing patient motion data, and/or providing electrical therapy;wherein; the operational circuitry is configured to select a first parameter; the operational circuitry is configured to observe at least first and second outputs of the motion sensor, the first and second outputs relating to respective first and second axes of measurement for the motion sensor; the operational circuitry is configured to correlate at least one of the at least first and second outputs, or a combination thereof, to the first parameter; the operational circuitry is configured to store a first configuration of the at least first and second outputs of the motion detector for measuring the first parameter; and the operational circuitry is configured to apply the first configuration to outputs of the motion sensor to monitor characteristics of the first parameter. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification