04403614 is referenced by 59 patents and cites 3 patents.

A body implantable ventricular cardioverting system. Circuitry is provided which detects the onset of a malignant ventricular tachyarrhythmia and provides a cardioverting signal in response thereto. The cardioverting signal has an energy level that is high relative to the pacing threshhold but below that necessary for defibrillation. In this manner, a ventricular tachyarrhythmia can be cardioverted before the onset of fibrillation and at a lower energy than required for defibrillation. Dependent on such factors as patient threshholds, the tissue/electrode interface and the electrode system employed, the energy level of the cardioverting signal is from 5 millijoules to 15 joules. The system can be configured such that increasingly malignant tachyarrhythmias result in higher energy cardioverting signals, including signals capable of defibrillation. Successful cardioversion with a signal having an energy level lower than necessary for defibrillation reduces the physical damage to the heart as well as the trauma to and discomfort of the patient.

Title
Implantable cardioverter
Application Number
58847
Publication Number
4403614
Application Date
February 27, 1981
Publication Date
September 13, 1983
Inventor
Ronald H Rockland
Parsippany
NJ, US
Joseph F Spear Jr
Philadelphia
PA, US
E Neil Moore Jr
Wallingford
PA, US
William R Engle
Blaine
MN, US
Agent
Schroeder Siegfried Vidas & Arrett
Assignee
Medtronic
MN, US
IPC
A61N 1/36
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