| 摘要 |
A blood pressure measuring device comprises a sphygmomanometer cuff, a pressure generation device, a pressure sensor, a valve for controllably venting the cuff, and a control unit for controlling the valve. In order to achieve, using only one single valve, a precise adjustment of the cuff pressure of sleeves having different volumes, the valve is constructed as a squeezed tube valve and comprises an elastic tube and a squeezing device adapted to be actuated by an electromagnet and used for said elastic tube, said magnet having a structural design of such a nature that the gradient of the force with respect to the displacement of its force/displacement characteristic is at each operating point smaller than that of the force/displacement characteristic of the elastic tube.
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