发明名称 |
DEVICE FOR REDUCING SIGNAL NOISE IN A FETAL ECG SIGNAL |
摘要 |
Apparatus for reducing signal noise in a fetal ECG signal obtained by using a unipolar ECG lead configuration (1), (3) thereby detecting a predominant T wave vector and avoiding changes in ECG waveform shape due to fetal rotation through the birth canal. The ECG signal is transmitted by means of a first signalling link (5) to the signal noise reducing components which include a conventional analogue filter (7), a digital high pass filter (9) for attenuating low frequencies and with a predetermined cut-off frequency, the cut-off frequency being essentially between 0.2 and 1.7 Hz, and a further digital filter (11). The filtered ECG signal is arranged as output signal from the electrical arrangement by means of a second signalling link (13).
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申请公布号 |
WO0036975(A1) |
申请公布日期 |
2000.06.29 |
申请号 |
WO1999GB04371 |
申请日期 |
1999.12.22 |
申请人 |
NEOVENTA MEDICAL AB;ROSEN, KARL, G.;SAMUELSSON, ARNE |
发明人 |
ROSEN, KARL, G.;SAMUELSSON, ARNE |
分类号 |
A61B5/0428;A61B5/0408;A61B5/0444;A61B5/0472;A61B5/0478;A61B5/0492;(IPC1-7):A61B5/044 |
主分类号 |
A61B5/0428 |
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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