Pulse wave measuring apparatus of high measurement accuracy

Details Pulse wave measuring apparatus of high measurement accuracy Pulse wave measuring apparatus of high measurement accuracy

2004-04-05

2008-03-18

Marmor, II, Charles A. (Department: 3735)

Surgery

Diagnostic testing

Cardiovascular

C600S501000

Reexamination Certificate

active

07344502

ABSTRACT:
A pulse wave measuring apparatus includes a pressure sensor having a plurality of sensor elements wider in width than the small sensor element required in conventional tonometry. On the basis of differences α and β of an AI value based on a pulse wave signal from the sensor element right above an artery and AI values based on pulse wave signals from two sensor elements located at a predetermined distance from the sensor element right above the artery, α2+β2is obtained. An AI value correction is calculated using a regression formula with α2+β2as a correction parameter representing the distortion degree. Using this correction value, the AI based on a pulse wave signal from the sensor element located right above the artery is corrected.

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European Search Report dated Sep. 9, 2004, relating to EP Application No. 04007705.9.

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