Feedback control and ventricular assist devices
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United States of America Patent
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Apr 21, 2009
Grant Date -
May 19, 2005
app pub date -
Nov 19, 2004
filing date -
Nov 19, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Various devices, systems and methods for providing effective, long term and reliable use of pressure feedback in VADs. Exemplary embodiments are described which provide for direct LV pressure measurement, non-invasive calibration techniques to detect ventricular collapse and recalibrate the feedback mechanism, improved pressure sensor designs with reduced drift, and barometric pressure correction schemes. These devices and methods may be used alone or in combination with each other, and may also be combined with other feedback mechanisms.
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