Sensing rate of change of pressure in the left ventricle with an implanted device
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United States of America Patent
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Aug 30, 2011
Grant Date -
Jun 10, 2010
app pub date -
Feb 10, 2010
filing date -
Jun 1, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
An implantable device and method for monitoring S1 heart sounds with a remotely located accelerometer. The device includes a transducer that converts heart sounds into an electrical signal. A control circuit is coupled to the transducer. The control circuit is configured to receive the electrical signal, identify an S1 heart sound, and to convert the S1 heart sound into electrical information. The control circuit also generates morphological data from the electrical information. The morphological data relates to a hemodynamic metric, such as left ventricular contractility. A housing may enclose the control circuit. The housing defines a volume coextensive with an outer surface of the housing. The transducer is in or on the volume defined by the housing.
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