Apparatus for filtering cardiac signals

Details Apparatus for filtering cardiac signals Apparatus for filtering cardiac signals

1998-01-07

1999-09-21

Getzow, Scott M.

Surgery

Diagnostic testing

Cardiovascular

128902, A61B 50402

Patent

active

059546603

ABSTRACT:
A device for filtering cardiac activity signals which receives input signals coming from collected physiological data, and delivers at an output, for processing data, signals spreading, in the frequency domain, over a widened spectral band. A first high-pass filter is used to reduce the extension of the spectral band of the signal received at the input. A compensation stage having a frequency characteristic (32) that is inverted as compared to that of the first high-pass filter is provided. The cut-off frequency (f1) of the first high-pass filter is greater than the low cut-off frequency (fo) of the spectral analysis band. Optionally, a second high-pass filter is provided, whose characteristic (38) presents a cut-off frequency corresponding to the low frequency (fo) of the spectral band. The high frequency of the spectral band may be similarly modified.

REFERENCES:
patent: 5388586 (1995-02-01), Lee et al.
55091220, Patent Abstracts of Japan.
06325309 Patent Abstracts of Japan.

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