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. |
申请公布号 |
US8175695(B2) |
申请公布日期 |
2012.05.08 |
申请号 |
US20100708080 |
申请日期 |
2010.02.18 |
申请人 |
ROUW MATTIAS;VAN GROENINGEN CHRISTIANUS J. J. E.;DE BRUYN HENRICUS WILLEM M.;MEDTRONIC, INC. |
发明人 |
ROUW MATTIAS;VAN GROENINGEN CHRISTIANUS J. J. E.;DE BRUYN HENRICUS WILLEM M. |
分类号 |
A61B5/0452;A61B5/0468;A61N1/362 |
主分类号 |
A61B5/0452 |
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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