Pulse wave analysis apparatus and pulse wave analysis...

Details Pulse wave analysis apparatus and pulse wave analysis... Pulse wave analysis apparatus and pulse wave analysis...

2006-07-11

2006-07-11

Nassar, Robert L. (Department: 3736)

Surgery

Diagnostic testing

Cardiovascular

Reexamination Certificate

active

07074193

ABSTRACT:
A pressure sensor for detecting a pulse wave, a digital conversion unit for converting a pressure signal from the pressure sensor into a digital signal, and a fourth derivative filter having an adjustable frequency characteristic for obtaining a fourth derivative wave of an original waveform based on the digital signal generated by the conversion by the digital conversion unit are provided. Local extrema of the fourth derivative wave in a section of the pulse wave corresponding to one beat are calculated. Based on the calculated local extrema, an early systolic component and a late systolic component are calculated.

REFERENCES:
patent: 6616613 (2003-09-01), Goodman
patent: 2004/0210142 (2004-10-01), Satoh et al.
patent: 2004/0210145 (2004-10-01), Satoh et al.
patent: 07-039530 (1995-02-01), None

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