Systems and methods for valvular regurgitation detection
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United States of America Patent
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Jan 31, 2012
Grant Date -
May 31, 2007
app pub date -
Nov 28, 2005
filing date -
Nov 28, 2005
priority date (Note) -
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Abstract
A system comprising an implantable medical device (IMD). The IMD includes an implantable sensor operable to produce an electrical signal representative of mechanical activity of a heart of a subject and a controller circuit coupled to the sensor. The controller circuit includes a wavelet filter module and a valvular regurgitation (VR) calculation module. The wavelet filter module is configured to extract signal energy information from the electrical signal. The energy information includes variation of signal amplitude with frequency and time. The VR calculation module is configured to calculate a measurement of VR for one or more heartbeats using the energy information.
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