Time domain reflectometer impedance sensor method of use and imp

Details Time domain reflectometer impedance sensor method of use and imp Time domain reflectometer impedance sensor method of use and imp

1993-08-06

1994-11-08

Kamm, William E.

Surgery

Truss

Pad

607 9, A61B 505

Patent

active

053617762

ABSTRACT:
A time domain reflectometry (TDR) impedance sensor is provided for measuring body impedance along a lead or catheter implanted in a patient's cardiovascular system. The TDR sensor applies an electrical stimulus to the lead and measures reflections echoed from impedance variations along and distal to the lead, which are superimposed on the applied stimulus. The measured signals may be analyzed with respect to time-of-flight and distance along the lead to detect a plurality of physiologically meaningful signals.

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