A sphygmomanometer is a device for measuring blood pressure, also known as a blood pressure meter. The sphygmomanometer mainly has auscultatory sphygmomanometer and oscilloscope sphygmomanometer.
Auscultation sphygmomanometer mainly includes: mercury sphygmomanometer (pressure gauge), spring meter sphygmomanometer (pressure and light column sphygmomanometer, light display sphygmomanometer, LCD sphygmomanometer, etc.
Showilloometric method is also known as oscillation method, its principle is to obtain the oscillation wave generated in the process of deflation, through a certain algorithm to convert the blood pressure value. The vast majority of electronic sphygmomanometer are designed using the oscillometric principle.
electronic sphygmomanometer. According to the measured parts can be subdivided into upper arm type, wrist type, finger type, manual type, automatic type and so on. Its advantages are easy to operate, intuitive reading, just need to open the switch will automatically measure, suitable for family use. However, the electronic sphygmomanometer also has the disadvantage of large error, and it is often necessary to be calibrated with the standard mercury column sphygmomanometer. Its principle is auscultation (also known as ke method) or oscillometric method (also known as oscillation method. It is mainly composed of gas pressure sensor, pressurized micro gas pump, electronic control exhaust valve, related software, mechanical slow exhaust valve and solenoid fast exhaust valve.
