发明名称 |
Slow gain control |
摘要 |
A system and method automatically controls a gain of a cardioverter/defibrillator which receives electrical activity of the heart and delivers shock pulses in response thereto. An amplifier amplifies the electrical activity according to a variable gain. A detection circuit detects depolarizations in the amplified electrical activity and provides a detect signal representing a cardiac event indicative of a depolarization when the amplified electrical activity exceeds a sensitivity threshold. A storage device stores peak history information representative of peak values of the amplified electrical activity of a first selected number (N) of cardiac events. Slow gain control circuitry adjusts the variable gain in discrete steps based on the stored peak history information.
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申请公布号 |
US5662688(A) |
申请公布日期 |
1997.09.02 |
申请号 |
US19950514931 |
申请日期 |
1995.08.14 |
申请人 |
CARDIAC PACEMAKERS, INC. |
发明人 |
HAEFNER, PAUL A.;STOCKBURGER, MARK A. |
分类号 |
A61N1/37;(IPC1-7):A61N1/39 |
主分类号 |
A61N1/37 |
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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