06477406 is referenced by 159 patents.

An implantable medical device such as a pacemaker or implantable cardioverter defibrillator or stand-alone hemodynamic monitor that uses an acoustic transducer responsive to heart sounds to detect the hemodynamic status of a patient. A hermetic housing encloses the device electronics and the device housing includes at least one substantially planar face configured to act as a diaphragm in response to acoustic waves. A transducer positioned inside the device housing provides an output signal to the device electronics responsive to vibration of the diaphragm. Embodiments of the transducer include a piezoelectric element and laser interferometer. The hemodynamic information may be used in various ways including arrhythmia discrimination and pacing and sensing optimization.

Title
Extravascular hemodynamic acoustic sensor
Application Number
9/543394
Publication Number
6477406 (B1)
Application Date
April 5, 2000
Publication Date
November 5, 2002
Inventor
Robert Turcott
Menlo Park
CA, US
Agent
Steven M Mitchell
US
Assignee
Pacesetter
CA, US
IPC
A61B 5/00
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