Arterial distensibility measuring apparatus
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United States of America Patent
Stats
-
Mar 17, 1992
Grant Date -
N/A
app pub date -
May 9, 1990
filing date -
May 19, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An arterial distensibility can be measured by putting a cuff with a blood flow shutting bag on an upper arm. The arterial distensibility E can be measured by measuring a shut blood flow critical pressure Pc, a diastolic pressure Pf at the upper arm and a crest value h of a pulse wave transmitted to the upper arm by the expression E-h/(Pc-Pf). The cuff has a forward bag, a central bag and a rear bag. The forward bag functions as a blood flow shutting bag. A pressure change in the forward bag is detected by a forward sensor, and a pressure change in the rear bag is detected by a rear sensor. Based on these detected values, the shut blood flow critical pressure Pc, diastolic pressure Pf and the crest h are given.
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