Electronic blood pressure gauge

Abstract

Abstract PURPOSE:To enable rapid measurement of a blood pressure and to prevent a blood pressure gauge from inability to measure a blood pressure due to shortage in pressurization by a method wherein given logic calculation is applied on a membership function regarding each parameter selected by a membership function selecting means to infere a relative pressure, and 8 blood pressure value is decided. CONSTITUTION:A cuff 2 is wound around the upper arm part of a person to be tested to start measurement of a blood pressure. First, an MPU 10 brings an exhaust valve 3 into a closed state and turns ON a pressurizing pump 4. The MPU 10 inputs a cuff pressure signal from an A/D converter 8 and decides whether a present cuff pressure is increased to a given pressure PCO. When the cuff pressure is increased to the given pressure PCO, the MPU 10 stops the pressurizing pump 4. The MPU 10 inputs a brain wave signal. The MPU 10 applies a threshold THO and divides a bran wave and decides whether division points Tst and Ten can be detected. When the division points can be detected, the MPU 10 calculates brain wave parameters AMP, RAV, WID, and CON, and by using the parameters, a blood pressure value is decided. THE MPU 10 brings the exhaust valve 3 into an opening state to reduce a cuff pressure to zero, and a decided blood pressure is displayed on a display device 9.

Inventors

• 👤 Osamu Shirasaki
• 👤 修 白崎

Bibliographic Details