What does the heart-shaped sign on the sphygmomanometer mean?

The heart symbol on the sphygmomanometer represents the number of heartbeats.

The electronic sphygmomanometer in daily life can measure three main data: high pressure, low pressure and pulse. Its measuring principle refers to the process that air pressurizes the local artery, and the local artery stops beating by applying pressure, so as to measure the blood flow pressure in this period.

Wherein the pulse data is the same as the heartbeat data.

Extended data:

1, mercury sphygmomanometer:

There are two types: desktop and vertical. The desktop mercury sphygmomanometer is reasonable in structure, firm and reliable. Vertical sphygmomanometer can adjust its height at will, and it is most commonly used because of its reliable results. However, the latter is slightly bulky and inconvenient to carry, and there is a risk of mercury leakage. The principle of measuring blood pressure is auscultation, which is mainly composed of balloon, cuff and manometer.

Among them, two tubes with plastic bags on the sleeves are respectively connected with balloons and pressure gauges to form a closed pipeline system. There are two types of pressure gauges: mercury column and spring type.

2. Electronic sphygmomanometer:

According to the measured position, it can be subdivided into arm type, wrist type, finger type, manual type and automatic type. Its advantages are simple operation, intuitive reading, automatic measurement as long as the switch is turned on, and it is suitable for home use. However, the electronic sphygmomanometer also has the disadvantage of large error, so it needs to be calibrated on the basis of the standard mercury sphygmomanometer.

Its principle is auscultation (also called Coriolis sound method) or oscillometry (also called oscillation method). It mainly consists of a gas pressure sensor, a pressurized micro air pump, an electrically controlled exhaust valve, related software, a mechanical slow exhaust valve and an electromagnetic quick exhaust valve.

3. Barometer sphygmomanometer:

It is also called aneroid sphygmomanometer and spring sphygmomanometer clinically. Using pneumatic pump to measure pressure is small and easy to carry, but with the increase of application times, the accuracy of the results will be affected by the change of spring characteristics, so it is necessary to calibrate with standard mercury sphygmomanometer regularly, which is rarely used in clinic.

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