Release date: 2009-04-21
Recently, scientists at the Massachusetts Institute of Technology have developed a new watch-type portable sphygmomanometer. This sphygmomanometer can be used for hours and even days on the wrist like a watch to monitor your blood pressure at any time and is expected to help detect the risk of heart disease and stroke.
The researchers say that unlike traditional sphygmomanometers that need to temporarily block arterial blood flow and then deflate to measure blood pressure, they developed a new sphygmomanometer to calculate blood pressure by monitoring the rate at which pulse waves travel along the hand artery. This type of sphygmomanometer is much lighter than a typical portable sphygmomanometer, can be worn like a watch, and its battery is comparable in size to a regular watch battery. By continuously measuring blood pressure, this sphygmomanometer allows doctors to learn more about the wearer's blood pressure changes, detect abnormal conditions in time, and eventually use the data to predict the time of heart disease.
It is understood that the measurement principle of sphygmomanometer can be divided into direct (oscillatory method) and indirect (auscultation). The working principle of the two sphygmomanometers is different. The direct type uses the pressure sensor to directly measure the pressure change; the indirect type works to control the pressure applied from the outside to the measured part, and the result of the control is related to it. The information on the generation and disappearance of Korotkoff sound is judged. The former can be continuously tested for arteries or veins, while the latter can only measure arterial systolic and diastolic blood pressure. Shanghai Medical Device Industry Association
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