The History of Blood Pressure Monitoring

There are four generations of electronic blood pressure monitors. The structure of the third generation electronic sphygmomanometer is described below.

Main components: fast pressure air pump or manual pressure pump, electronic fast exhaust valve, mechanical constant speed exhaust valve, air pressure sensor

Due to the use of easily aging rubber valves, it is generally considered to be inaccurate. The technology has been phased out by mainstream manufacturers of electronic sphygmomanometers.

 

The main components are: pressure air pump, electronic control exhaust valve, air pressure sensor

Technology used: MWD Technology (measurement at reduced pressure)

Measurement characteristics: due to the use of electronic control exhaust valve servo technology (ECV servo technology), the speed of constant speed exhaust is really constant, and intelligent pressurization can be carried out according to the blood pressure of the measured person, so the measurement result is more stable (except for other influencing factors).

Feature 1: only one exhaust valve --- electronically controlled exhaust valve is used for constant speed exhaust and quick exhaust at the end of measurement;

Feature 2: intelligent pressurization. In other words, the sphygmomanometer will make a rough judgment on the blood pressure of the measured person in advance, so as to determine the final pressure value to be added. Usually, the pressure value is added to the systolic blood pressure of the measured person + 30mmhg;

Feature 3: the outgassing rate can be stabilized at 3 ~ 4MMHG / s at the beginning.

The second generation of electronic sphygmomanometer (g2-nibpm) is characterized by electronic controlled exhaust valve (ECV) and servo technology of electronic control exhaust valve. The international companies that master the "electronic control exhaust valve (ECV) and servo technology of electronic control exhaust valve" are roughly as follows: jinyidi technology, Omron, Panasonic.

The first generation and the second generation of measurement technologies are also referred to as MWD Technology (measurement at reduced pressure), corresponding to the following third generation MWI Technology (measurement at pressure).

 

The main components: servo pressure air pump, electronic control exhaust valve, air pressure sensor

Technology used: MWI Technology (measurement under pressure)

Measurement characteristics: uniform pressure, and during the process of pressure measurement.

Feature 1: use servo pressure air pump to control the speed of pressurization and measure blood pressure during pressurization;

Feature 2: only one exhaust valve, electronic quick exhaust valve, is used to measure the quick exhaust at the end of the measurement. The technical difficulty of this generation of electronic sphygmomanometers is MWI Technology (pressure synchronous measurement). There are several international companies mastering this generation of Technology: jinyidi, Omron, Panasonic and aintan.

The third generation of electronic sphygmomanometer (g3-nibpm) is characterized by the use of only one electronically controlled quick exhaust valve and - MWI Technology (pressurized synchronous measurement technology).

 

Main components: integrated gas path

Technology used: MWI Technology (measurement under pressure)

Measurement characteristics: uniform pressure, and during the process of pressure measurement.

Feature 1: the whole integrated gas circuit can be miniaturized, so that the whole gas path can be reduced to only a part of the space of ordinary watch; it lays the foundation for wearable watch type blood pressure meter (blood pressure watch).

The fourth generation of electronic sphygmomanometer (g4-nibpm) is characterized by its extremely compact structure and the whole gas path is reduced to only a part of the space of an ordinary watch.