Filter for use with pulse-wave sensor and pulse wave...

Details Filter for use with pulse-wave sensor and pulse wave... Filter for use with pulse-wave sensor and pulse wave...

2006-08-29

2006-08-29

Nasser, Robert L. (Department: 3735)

Surgery

Diagnostic testing

Cardiovascular

C600S485000, C600S500000

Reexamination Certificate

active

07097621

ABSTRACT:
A pulse wave analyzing apparatus including a cuff12for detecting a pulse wave from a living subject, a pressure sensor16for converting the pulse wave detected by the cuff12, into an electric signal, i.e., a pulse wave signal SM, a plurality of band-pass filters62(BPF(1), BPF(2), . . . , BPF(n)) that have respective low-side cuff-off frequency bands differing from each other and each receive the pulse wave signal SM, a provisional rising point determining device64for determining respective times PS of respective provisional rising points of respective pulse waves represented by respective secondary pulse wave signals SM2that have passed through the band-pass filters62, and a proper rising point determining device66for comparing the respective times PS of respective provisional rising points with each other and thereby determining a time AS of a proper rising point based on the respective times PS of respective provisional rising points.

REFERENCES:
patent: 6379309 (2002-04-01), Ogura et al.
patent: A 2001-145606 (2001-05-01), None

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