In life, measuring blood pressure as an important part of health monitoring, how to ensure that blood pressure values are measured accurately and reliably is a growing concern today。
What's blood pressure
Blood pressure (blood presure, bp) refers to the side pressure of the vascular wall when the blood moves within the vein, which is the driving force for the movement of blood within the vein. The maintenance of blood pressure is an important basis for normal physical activity in the human body, which depends on the effective pump output of the heart, the normal blood capacity and the condensation function of the outer vascular vessels。
What does "high pressure" mean?
When we measure blood pressure, we usually say “high pressure” or “low pressure”, where “high pressure” refers to a constriction pressure, which is called “high pressure” because of the highest blood pressure in a heart-crunch; “low pressure” is the blood pressure in a heart-crunch, which is a stress pressure。
Common sphygmomanometer types and their rationale:
Silver sphygmomanometer
The method of work is based on hydrostatic balance, where the mercury bottle is connected by a connector to the oscilloscope, and when the mercury bottle is under pressure, the pressure value is indicated by forcing the mercury in the oscilloscope to rise. Mercury is a liquid heavy metal that evaporates, seriously contaminates the soil, the water environment, causes serious harm to humans, etc. The production of mercury-containing sphygmomanometers is prohibited as of 1 january 2026, according to the relevant sector。
No automatic sphygmomanometers
The working principle is that equipment that automatically determines an arterial blood pressure indirectly by detecting signals from cuffbands or sensors, and currently commonly used in households, non-firing automatic sphygmomanometers are typically electronic sphygmomanometers。
Flexible blood pressure meters
The method of work is based on the huck law, which forces the elastic sensitive element (flexical caption box) to produce the corresponding flexible deformation one-on-one shift, with the help of a collage, which is transmitted and amplified through the gear axle transfer body, and the measured pressure value is gradually indicated on the pallet by a pointer fixed to the gear axis。
How should consumers choose from a variety of products in the market
At the time of the selection, the product label must be checked for the medical equipment registration number and the product registration information can be obtained through the network of officials of the national drug supervisory authority. The safety of the product is guaranteed only if the sphygmomanometer with the registration number meets the relevant requirements and standards。
Attention to sphygmomanometer use:
The survey shall be preceded by a minimum break of 15 minutes or more and a minimum interval of 2 minutes or more for continuous measurements。
In such cases, blood pressure measurements are avoided: when fresh exercise, fresh meals, after bathing, drinking and smoking, constipation or urination。
The measurements shall be carried out in the correct measurement position and in a room of suitable temperature。
The blood pressure should not be measured only once, but should be measured several times in the day and recorded in order to understand the changes in the blood pressure within the day。
After prolonged use of sphygmomanometers, it is recommended that they be calibrated to ensure accuracy in use。
Sphygmomanometers used in health care are included in the mandatory inventory of measuring devices and are tested according to their type in accordance with the jjg 270-2008 sphygmomanometer and sphygmomanometer checking protocol or jjg 692-2010 sphygmomanometer checking protocol. Mercury sphygmomanometers and elastic blood pressure meters (desktop or stand) shall be tested for a period not exceeding six months. The non-start automatically measured sphygmomanometers should be tested for one year。
