Blood Pressure Measuring Equipment Manufacturers

Blood pressure measuring equipment comprises a sleeve with an inflatable chamber and a microphone, and an appliance connected by a line with the sleeve. The appliance comprises of a pressure sensor and a differentiator connected to the sensor output. The differentiator is connected with a regulator that regulates a vent valve in such a manner that the pressure in the chamber during the measurement phase, in which the systolic and diastolic pressures are measured, reduces at a constant rate. A Korotkoff tone identifier, which is connected through further elements with the microphone and the differentiator, ensures that only those signals from the microphone, which occur simultaneously with a heartbeat-induced pressure fluctuation are delivered as Korotkoff tones and evaluated for determination of the systolic and diastolic pressure.