发明名称 |
R-wave detection method for implantable cardioverter defibrillators |
摘要 |
An ICD detection method for sensing the occurrence of an R-wave improves the ability to distinguish R-waves from noise through the use of variable declining sensitivity thresholds. The method includes the consideration of the amplitude of at least the previous most recent R-wave to determine a declining threshold of sensitivity used to recognize a subsequent electrical signal as an R-wave. In the method, the amplitude of the previous R-wave may be classified, based upon amplitude, and based upon the classification, a desirable time constant for the declining threshold of sensitivity is provided as an exponential or reverse exponential decay. Alternatively, a piece wise use of various decay formulas may be combined and used to avoid false recognition of noise as an R-wave.
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申请公布号 |
US5709215(A) |
申请公布日期 |
1998.01.20 |
申请号 |
US19950524391 |
申请日期 |
1995.09.06 |
申请人 |
ANGEION CORPORATION |
发明人 |
PERTTU, JOSEPH S.;BRUMWELL, DENNIS A.;BREWER, JAMES E.;ADAMS, THEODORE P. |
分类号 |
A61B5/0456;A61N1/39;(IPC1-7):A61B5/045 |
主分类号 |
A61B5/0456 |
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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