The structure is simple, durable, and the blood pressure measurement is stable and accurate. Frequent use, poor maintenance, easy to malfunction, completely dependent on human subjectivity, poor repeatability, accuracy depends on the clinician's experience, external noise interferes with the recognition of "Korotkoff sounds", and it is inconvenient to carry.
1. After each measurement, the sphygmomanometer should be tilted 45 degrees to the right to allow the mercury to flow back into the mercury storage bottle and close the mercury storage bottle at the same time.
2. Avoid subjecting the sphygmomanometer to strong impact, and measure blood pressure strictly in accordance with the method of using the sphygmomanometer.
3. In the event of malfunctions such as zero misalignment, bubbles or intermittent mercury column, it is not advisable to disassemble it by yourself, stop using it immediately and send it to a professional maintenance department for repair.
4. If mercury spills, immediately collect the mercury and put it in a well-sealed porcelain jar. For small mercury that is difficult to collect, you can sprinkle some sulfur powder to generate mercury sulfide to prevent the mercury from evaporating.
5. JJG270-2008 "Sphygmomanometer and Sphygmomanometer Verification Regulations" stipulates that the verification period of sphygmomanometers and sphygmomanometers shall not exceed half a year, so it should be periodically sent to relevant measurement institutions for verification.
