Compared with mercury sphygmomanometer, electronic sphygmomanometer has the characteristics of portability and high accuracy, which is indispensable for patients with hypertension and many middle-aged and elderly people.
Electronic sphygmomanometer is a medical device that uses modern electronic technology and indirect blood pressure measurement principle to measure blood pressure. At present, most of the home electronic sphygmomanometers on the market use oscilloscopic method to measure blood pressure. This method is simple, relatively reliable and easy to be realized by electronic circuit method. Electronic SPhygMOMANometer has arm type, wrist type, its technology has experienced the most original first generation, the second generation (arm type use), the third generation (wrist type use) development. Electronic sphygmomanometer has become the main tool for home self-measurement of blood pressure, and is increasingly used in hospitals and other medical institutions.
Electronic sphygmomanometer Principle - structure, electronic sphygmomanometer by the balloon, cuff, measurement and display panel. The balloon and cuff are exactly the same as mercury sphygmomanometer. The measurement and display part is composed of air pressure sensor, LCD display, IC, battery, etc., and its internal circuit structure is shown as below.
Electronic sphygmomanometer principle - working principle, sphygmomanometer can be divided into direct type and indirect type of two, the working principle of the two sphygmomanometer is not the same, direct type is to measure the pressure changes directly with the pressure sensor; The working principle of the indirect type is to control the pressure applied to the measured part from the outside, and to judge the result of the control and the related information about the production and disappearance of the Coriolis sound. The former can be continuously tested regardless of the artery or vein, while the latter can only measure the systolic and diastolic blood pressure of the artery.
