Atrial defibrillation using transcutaneous radio-frequency pulse delivery

G Manoharan, JA Santos, NE Evans, JMCC Anderson, BJ Kidawi, JD Allen, AAJ Adgey

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Atrial fibrillation (AF) is one of the most common sustained cardiac arrhythmias found. Its treatment requires the use of a synchronised electrical shock or drug therapy. This paper describes a new form of electrical defibrillator that employs a two-part, transdermal RF transformer to couple an on-off keyed 7.2 MHz pulse to an implanted, passive receiver; this, in turn, delivers a unipolar DC shock to the heart. Factors influencing the transformer's design are discussed and results from axial and lateral primary/secondary coil displacement trials presented. In animal studies, cardioversion was 100% successful with pulses of 100 V amplitude and 10 ms width. The implant is battery-free, which makes it an attractive and inexpensive alternative for the treatment of AF.
Original languageEnglish
Title of host publicationUnknown Host Publication
PublisherIEEE
Pages313-316
Number of pages4
DOIs
Publication statusPublished - Nov 2001
EventThe Seventh Australian and New Zealand Intelligent Information Systems Conference, ANZIIS - Perth, Australia
Duration: 1 Nov 2001 → …

Conference

ConferenceThe Seventh Australian and New Zealand Intelligent Information Systems Conference, ANZIIS
Period1/11/01 → …

Bibliographical note

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[3] A. Timmis, and A. Nathan, Essentials of Cardiology, 2"d Ed., pp. 228-239. Blackwell Scientific Publications, 1993.
[4] P. Touboul, “Atrial Defibrillator: Is It Needed? Would Society Pay For It?,” PACE, Vol. 18 (Pt. 11), pp. 616-621, 1995.
[5] P. E. K. Donaldson, “Frequency-hopping in r.f. energy-transfer links,” Electronics h Wireless World, pp. 24-26, August 1986.
[6] N. Donaldson and T.A. Perkins, “Analysis of resonant coupled coils in the design of radio frequency transcutaneous links,” Med. Biol. Eng. h Cornput., Vol. 21, pp. 612- 627, September 1983

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