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Valve, fluid control device, and blood-pressure monitor

A fluid and valve housing technology, applied in the field of sphygmomanometers, can solve problems such as poor action, inability to fill the cuff with compressed air, and reduced air flow, and achieve the effect of preventing poor action

Active Publication Date: 2018-12-21
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] That is, if Figure 17 As shown, when the foreign matter F blocks the opening 921 or is sandwiched between the diaphragm 920 and the valve seat 939, the fluid control device 900 becomes unable to fill the cuff 109 with compressed air.
In addition, when a foreign matter F is caught between the diaphragm 920 and the second valve housing 992, the flow rate of the air filled in the cuff 109 decreases.
On the other hand, if Figure 18 As shown, in the case that the foreign matter F blocks the third vent hole 913, the fluid control device 900 becomes unable to discharge the compressed air from the cuff 109.
[0015] Therefore, the conventional valve including the valve 901 has a problem of malfunction due to foreign matter.

Method used

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  • Valve, fluid control device, and blood-pressure monitor
  • Valve, fluid control device, and blood-pressure monitor
  • Valve, fluid control device, and blood-pressure monitor

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other Embodiment approach

[0127] In addition, in the above-mentioned embodiments, air is used as the fluid, but the present invention is not limited to this, and a gas other than air can also be used as the fluid.

[0128] In addition, in the aforementioned embodiments, the fluid control devices 100 , 200 , and 300 filled the cuff 109 with air, but the present invention is not limited thereto. During implementation, the fluid control device can also be filled with gas in a container other than the cuff.

[0129] In addition, in the foregoing embodiments, as figure 1 , Figure 9 , Figure 12 As shown, the fluid control device 100, 200, 300 has a barrier 185 separating the first valve chamber 131 and the first valve chamber 132, but is not limited thereto. In practice, in the fluid control devices 100 , 200 , and 300 , the barrier 185 may be removed to connect the first valve chamber 131 and the first valve chamber 132 . In this case, the first valve housing 191 only needs to have either one of the ...

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PUM

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Abstract

This fluid control device (100) is provided with a piezoelectric pump (10), a valve (101), and a cuff (109). The valve (101) is provided with a first valve housing (191), a diaphragm (120), and a second valve housing (192). The second valve housing (192) has a second air vent (112) that communicates with an internal space of the cuff (109), a third air vent (113) that communicates with the outsideof the fluid control device (100), and a first valve seat (139) that is formed on the periphery of the third air vent (113). The second valve housing (192) forms, with the diaphragm (120), a first flow passage (141) that communicates the second air vent (112) and the third air vent (113). The second valve housing (192) has a protruding part (140) that protrudes toward the diaphragm (120) and forms a portion of the first flow passage (141). The shortest distance between the protruding part (140) and the diaphragm (120) is less than the diameter (2r) of the third air vent (113).

Description

technical field [0001] The present invention relates to a valve for preventing backflow of fluid, a fluid control device including the valve, and a sphygmomanometer including the fluid control device. Background technique [0002] Patent Document 1 discloses a fluid control device including a valve. [0003] Figure 14 It is a sectional view of main parts of the fluid control device 900 of patent document 1. The fluid control device 900 includes a piezoelectric pump 10 , a valve 901 , and a cuff 109 . Fluid control device 900 is used in a sphygmomanometer. Details of the piezoelectric pump 10 will be described later. The valve 901 includes a first valve housing 991 , a diaphragm 920 and a second valve housing 992 . [0004] The first valve case 991 has: a first vent hole 910 through which the discharge hole 56 of the piezoelectric pump 10 communicates; a first vent hole 911 through which the discharge hole 55 of the piezoelectric pump 10 communicates; and a valve seat 93...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0235
CPCA61B5/0235A61M39/24A61B5/022F04B43/043A61M2039/2493F04B53/106F16K7/17F16K11/22F16K31/128G05D7/0113G05D16/163
Inventor 川村宪一郎
Owner MURATA MFG CO LTD