A novel device for transvenous atrial defibrillation with a biphasic rectangular pulse waveform, with instant power supplied through a radio-frequency energy-transfer link in a short air gap of up to 18 mm, has been investigated and is briefly described here. Previous waveform assessments, have suggested that a biphasic and asymmetric (second phase at 50% amplitude) pulse waveform of energy discharge is of particular clinical interest. Hence, a safety study upon the haemodynamic effects of such a novel waveform for atrial defibrillation, was carried out on 6 animal models (pigs), at energy levels of 3 3 and 5 J. The results demonstrated relatively small and reversible effects on the haemodynamics and the novel waveform was comparable in effect to a conventional, capacitor-based (with RC exponential decay), biphasic waveform. Also, an assessment of the device output performance for various air gap distances is presented.
|Title of host publication||Unknown Host Publication|
|Place of Publication||345 E 47TH ST, NEW YORK, NY 10017 USA|
|Number of pages||6|
|Publication status||Published - 2004|
|Event||ICCDCS 2004: Fifth International Caracas Conference on Devices, Circuits and Systems - Punta Cana, Dominican Republic|
Duration: 1 Jan 2004 → …
|Conference||ICCDCS 2004: Fifth International Caracas Conference on Devices, Circuits and Systems|
|Period||1/01/04 → …|
- atrial fibrillation
- RF coupled coils
- wireless power delivery
- low-tilt waveform cardioversion
- transdermal atrial defibrillation.