Abstract: An ultrasonic doppler blood flow detector used for hemorrhoid artery ligation having a hollow insertion cylinder which is enclosed at the distal end and open at the near end, and can be inserted through the anus; the cylinder has an ultrasound transducer in its interior wall, for detecting blood flow in the affected artery, and a ligation hole next to the transducer, through which the detected artery is ligated with ligation device, such as a curved needle or a wire for cautery.

Abstract: A cuff-inflation system for inflating a blood pressure cuff is provided with an activating and control assembly. The activating and control assembly includes a first connector port with an attached internal tube and a second connector port with an attached internal tube that is adapted to intersect and join the first internal tube. A miniature electric pump is connected to the first internal tube and there is further provided an activating switch for activating the system. A first external tubular connector connects the activating and control assembly to a blood pressure cuff and a second external tubular connector connects the activating and control assembly to a pressure regulating device.

Abstract: An ultrasonic wave probe comprises an ultrasonic wave transmitting vibrator and a pair of ultrasonic wave receiving vibrators in order to measure blood flow velocity. The receiving vibrators are adapted to receive reflected waves of an ultrasonic wave which is emitted from the transmitting vibrator and reflected from a measured point at different receiving angles and the difference between the receiving angles of the receiving vibrators is always kept to a given value. The ultrasonic wave probe further includes an ultrasonic wave transmitting and receiving vibrator for measuring blood vessel diameter deviation at the same time as the measurement of the blood flow velocity.