发明名称 |
T-wave alternans train spotter |
摘要 |
A method and system for detecting T-wave alternans for use in an implanted medical device uses wave transformation of QT intervals to obtain a reliable measure of TWA. In one embodiment, an array provides alternating sign multiplication factors which are applied respectively to n consecutive QT values. Each successive QT value is high pass filtered and moved sequentially through a queue so that each cycle each of the n QT values is multiplied by one of the factors; the products are summed and made absolute to provide an alternans match value. The alternans match is compared with a noise threshold signal, and alternans is declared when the match exceeds the threshold by a predetermined amount. The array is programmable and can be varied, providing a high degree of flexibility to optimize the test for the patient.
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申请公布号 |
US2004186527(A1) |
申请公布日期 |
2004.09.23 |
申请号 |
US20040755694 |
申请日期 |
2004.01.12 |
申请人 |
ROUW MATTIAS;VAN GROENINGEN CHRISTIANUS J.J.E.;DE BRUYN HENRICUS WILLEM. M. |
发明人 |
ROUW MATTIAS;VAN GROENINGEN CHRISTIANUS J.J.E.;DE BRUYN HENRICUS WILLEM. M. |
分类号 |
A61N1/362;(IPC1-7):A61N1/365 |
主分类号 |
A61N1/362 |
代理机构 |
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地址 |
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