发明名称 |
Implantable cardioverter |
摘要 |
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.
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申请公布号 |
US4403614(A) |
申请公布日期 |
1983.09.13 |
申请号 |
US19810239007 |
申请日期 |
1981.02.27 |
申请人 |
MEDTRONIC, INC. |
发明人 |
ENGLE, WILLIAM R.;MOORE, JR., E. NEIL;SPEAR, JR., JOSEPH F.;ROCKLAND, RONALD H. |
分类号 |
A61N1/38;A61N1/39;(IPC1-7):A61N1/36 |
主分类号 |
A61N1/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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