ACCELEROMETER ENHANCED IMPLANTABLE CARDIO-DEVICE
First Claim
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1. A method for controlling an implantable medical device (IMD) comprising:
- obtaining estimated heart sounds based on observed accelerometer signals and a relationship between training signals from a remote accelerometer indicative of a plurality of movements of a heart and pre-recorded heart sounds indicative of the same heart movements; and
controlling the implantable medical device, at least in part, based on the estimated heart sounds.
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Abstract
An implantable medical device (“IMD”) processes and analyzes valuable clinical information regarding cardiac performance. A database or correlator is pre-customized to the specific patient, by correlating signals received by a remote accelerometer associated with heart movements with accurate heart sounds recorded from a microphone to provide a more effective and customized basis for estimating heart sound. The information is then used to better control an implantable medical device.
12 Citations
20 Claims
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1. A method for controlling an implantable medical device (IMD) comprising:
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obtaining estimated heart sounds based on observed accelerometer signals and a relationship between training signals from a remote accelerometer indicative of a plurality of movements of a heart and pre-recorded heart sounds indicative of the same heart movements; and controlling the implantable medical device, at least in part, based on the estimated heart sounds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for controlling an implantable medical device, comprising:
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an accelerometer adapted to be located on a patient remote from a patient heart and further adapted to generate a signal based on measured heart movements of the patient; and a controller adapted to control the implantable medical device at least partially in response to an estimated heart sound derived from a relationship between the accelerometer signal and previously recorded heart sounds. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system for controlling an implantable medical device (IMD) comprising:
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means for obtaining estimated heart sounds based on observed accelerometer signals and a relationship between training signals from a remote accelerometer indicative of a plurality of movements of a heart and pre-recorded heart sounds indicative of the same heart movements; and means controlling the implantable medical device, at least in part, based on the estimated heart sounds. - View Dependent Claims (18, 19, 20)
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Specification