Surgery – Diagnostic testing – Cardiovascular
Patent
1998-01-08
2000-05-30
Nasser, Robert L.
Surgery
Diagnostic testing
Cardiovascular
600493, 600494, 600495, A61B 500
Patent
active
060686014
ABSTRACT:
A blood pressure measuring apparatus including an inflatable cuff which is adapted to be wound around a body portion of a living subject, an air pump which supplies a pressurized air to the cuff to inflate the cuff and thereby increase an air pressure in the cuff, so that the cuff presses the body portion of the subject, an air tank which is connected to the air pump, an air restrictor which is provided between the air tank and the cuff, a deflation-control valve which is provided between the restrictor and the cuff to control an amount of discharging of the pressurized air from the cuff and thereby control deflation of the cuff, a control device which controls the air pump to supply the pressurized air to the cuff while controlling the deflation-control valve to discharge a controlled amount of the pressurized air therethrough from the cuff, so as to increase the pressure of the cuff linearly at a predetermined first rate, and a measuring device which measures at least one blood pressure value of the subject based on a pulse wave which is produced from an artery of the body portion of the subject in synchronism with a heartbeat of the subject while the pressure of the cuff is linearly increased at the first rate by the control device.
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Harada Chikao
Hayakawa Tokuji
Miwa Yoshihisa
Miyazaki Makoto
Yokozeki Akihiro
Colin Corporation
Nasser Robert L.
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