发明名称 |
PACEMAKER ARTIFACT SUPPRESSION IN CORONARY MONITORING |
摘要 |
<p>In cardiac signal processing apparatus, there is provided improved means for suppressing pacer signal artifacts, including both the discharge pulse and the recharge waveform (tail) of such artifact. Rate-limiting circuitry is used to substantially suppress the discharge pulse. However additional circuitry responsive to the detection of a pacer pulse is operative to obtain a measure of the electrical discharge of the discharge portion of the respective pacer pulse and to use such measure to generate a tail suppression signal which, when added to the original signal, substantially cancels the original pacer tail. A feed-back loop is opened by the rate-limiter when a pacer pulse occurs and in turn permits a large signal to be imposed of a threshold-level-type pacer pulse detector for connecting the large signal (pacer pulse) to a capacitor during the discharge portion of the pacer pulse. The capacitor being to discharge shortly after the pacer pulse's discharge portion with a polarity and time constant selected to substantially cancel (when summed) the pacer tail.</p> |
申请公布号 |
CA1098174(A) |
申请公布日期 |
1981.03.24 |
申请号 |
CA19780299359 |
申请日期 |
1978.03.21 |
申请人 |
AMERICAN OPTICAL CORPORATION |
发明人 |
NAYLOR, THOMAS K.;CUSHING, ALAN S. |
分类号 |
A61B5/0402;A61B5/04;(IPC1-7):61B5/04 |
主分类号 |
A61B5/0402 |
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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