Vital information processing apparatus

Details Vital information processing apparatus Vital information processing apparatus

1997-07-31

1999-10-19

Kamm, William E.

Surgery

Diagnostic testing

Cardiovascular

128901, A61B 504

Patent

active

059679930

ABSTRACT:
There is provided a vital information processing apparatus capable of effectively reducing small-amplitude noise and isolated noise without degrading an abrupt change portion in a processing target vital signal. A vital signal detected by a vital signal detector (10) is input from a vital signal input unit (20). A sync signal extractor (25) extracts, e.g., the QRS wave form of an electrocardiogram signal of the input signal and outputs the extracted wave as a sync signal (26). A preprocessor (30) performs predetermined preprocessing for the processing target vital signal, e.g., a K sound signal and outputs the preprocessed signal to median filters (40, 45). Each of the median filters (40, 45) filters the Korotkoff sounds using the QRS signal (26) as the index value and outputs the resultant signal.

REFERENCES:
patent: 4617937 (1986-10-01), Peel et al.
patent: 4770184 (1988-09-01), Greene, Jr. et al.
patent: 5119822 (1992-06-01), Niwa
patent: 5355890 (1994-10-01), Aguirre et al.

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