High frequency lead testing apparatus in an implantable defibril

Details High frequency lead testing apparatus in an implantable defibril High frequency lead testing apparatus in an implantable defibril

1997-06-30

2000-08-15

Jastrzab, Jeffrey R.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 139

Patent

active

061049549

ABSTRACT:
An implantable cardioversion defibrillator device is provided with a measuring device for measuring a parameter associated with the defibrillator electrodes such as their impedance and the like. The parameter is measured by applying to the electrodes at regular intervals a series of pulses having a duration shorter than and an amplitude comparable to that of the defibrillation. As a result the patient is unaware of the test pulses. The test pulses may also be used to dump charges from a capacitor in the output stage of the device.

REFERENCES:
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patent: 5201865 (1993-04-01), Kuehn
patent: 5215081 (1993-06-01), Ostroff
patent: 5215083 (1993-06-01), Drane et al.
patent: 5330504 (1994-07-01), Somerville et al.
patent: 5755742 (1998-05-01), Schuelke et al.

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