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Gas leaking valve and sphygmomanometer

A leak valve and gas technology, applied in vascular assessment, cardiac catheterization, etc., can solve the problems of large difference in leak rate, easy to be affected by the environment, and unable to leak normally, so as to reduce the possibility and impact Effect

Pending Publication Date: 2020-07-14
深圳市巨众科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this kind of air leakage valve is used, the gas directly rushes to the pores. Therefore, the air leakage rate is greatly affected by the air pressure. If it is in the middle, it will be blocked, and it will not be able to leak normally.

Method used

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  • Gas leaking valve and sphygmomanometer
  • Gas leaking valve and sphygmomanometer
  • Gas leaking valve and sphygmomanometer

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0035] refer to Figure 1 to Figure 2 , the leakage valve in this embodiment includes an upper cover 100 , a lower cover 200 and a middle piece 300 . The upper cover 100 is located on top of the lower cover 200 . refer to image 3 and Figure 4 , the cavity between the upper cover 100 and the lower cover 200 forms the air storage portion 400 , and the top of the middle piece 300 is located in the air storage portion 400 . Both the upper cover 100 and the lower cover 200 are plastic parts, and the middle part 300 is a silicone part. The upper cover 100 is fixedly connected with the lower cover 200 . Specifically, it may be fixed by means of bonding or the like. Preferably, the bottom of the upper cover 100 protrudes downwards with a clamping block 120, and the top of the lower cover 200 is provided with a clamping groove 240. When the upper cover 100 and the lower cover 200 are assembled, the clamping block 120 is clamped into the clamping groove 240 for limit.

[0036] ...

no. 2 example

[0046] This embodiment is an alternative embodiment of the first embodiment, refer to Figure 5 , in this embodiment, the end of the groove 220a (air outlet channel) is not aligned with the air outlet 230a, and the two are staggered. At this time, the bottom surface of the covering part must protrude upwards, and cannot be set as a plane, so that there is an accommodation space between the bottom surface of the covering part and the top surface of the lower cover 200a. The gas flows into the accommodation space between the bottom surface of the cover part and the top surface of the lower cover 200a from the groove 220a (gas outlet channel), and then flows into the gas outlet 230a. In this embodiment, the gas can undergo secondary buffering in the accommodation space between the bottom surface of the cover part and the top surface of the lower cover 200a, so that the gas can flow into the gas outlet 230a more smoothly. Moreover, during manufacture, there is no need to intentio...

no. 3 example

[0048] This embodiment is an alternative embodiment of the first embodiment, refer to Image 6 , in this embodiment, the groove on the lower cover 200b is replaced with a protrusion 220b, and the protrusion 220b will prop up the cover part upwards, so that the positions on both sides of the protrusion 220b on the top surface of the lower cover 200b are in line with the A gap is formed between the bottom surfaces of the covering parts, and the gap is the gas outlet channel, and the gas in the gas storage part 400 flows into the gas outlet 230b from the gap. In both the first embodiment and the second embodiment, it is necessary to process the groove on the lower cover after the injection molding is completed, which requires two processes to complete. In this embodiment, the grooves are changed into protrusions, and the protrusions can be made together when the lower cover 220b is injected, which reduces one process and improves the efficiency.

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Abstract

The invention discloses a gas leaking valve and a sphygmomanometer. The gas leaking valve is used for leaking of gas. The gas leaking valve comprises: an upper cover, which is provided with a gas inlet; and a lower cover assembly, which is connected with the upper cover, wherein a gas storage part is formed between the lower cover assembly and the upper cover, the lower cover assembly is providedwith a gas outlet and a gas outlet channel which communicate with each other, the top of the gas outlet is located in the lower cover assembly, and the gas outlet channel and the gas inlet both communicate with the gas storage part. The sphygmomanometer comprises the gas leaking valve. According to the gas leaking valve, due to the fact that the gas outlet is located in the lower cover assembly, shielding can be formed, and the possibility that particulate dust falls into the gas outlet and blocks the gas outlet is reduced; and gas is not prone to directly rushing into the gas outlet, so the influence of gas pressure on a gas leaking rate can be reduced to a certain degree.

Description

technical field [0001] The invention relates to the field of fluid control, in particular to an air leakage valve and a sphygmomanometer. Background technique [0002] In devices such as sphygmomanometers, it is generally necessary to use an air leakage valve to achieve uniform air leakage. Most of the leak valves currently used are pinhole leak valves. The principle is to drill pores on the plane of the valve body by laser, and the gas leaks out through these pores. However, when this kind of air leakage valve is used, the gas directly rushes to the pores. Therefore, the air leakage rate is greatly affected by the air pressure. If it is in the middle, it will be blocked, and it will not be able to leak normally. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes an air leakage valve, which can reduce the influence of air pressure on the air l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/022A61B5/0235
CPCA61B5/02141A61B5/022A61B5/0235
Inventor 常丽华
Owner 深圳市巨众科技有限公司
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