Anti-reflux device of gastroscope

Abstract

An anti-reflux device of a gastroscope is arranged on the front portion of a handle end of an endoscope tube and connected with a working channel of the endoscope tube, the anti-reflux device of the gastroscope is provided with an upper bidirectional channel and a lower bidirectional channel, reflux grooves which are arranged in a staggered mode are arranged between the upper bidirectional channel and the lower bidirectional channel, and the reflux grooves are of a U-shaped structure and are communicated with the upper channel and the lower channel. The opening direction of the backflow groove faces the lens direction of the gastroscope. By means of the two staggered backflow channels, no resistance is generated to flowing of forward liquid, flow dividing and backtracking effects can be continuously generated by impacting reverse flowing liquid, fluid in the upper channel and the lower channel is prevented from flowing under pressure, and the stable and reliable backflow prevention effect is achieved.

Description

technical field [0001] The invention relates to the improvement of the human endoscope, in particular to an anti-reflux device applied to the gastroscope. Background technique [0002] With the advancement of ultra-micro visualization technology, human endoscopes have become more and more miniaturized. In the multifunctional gastroscope, the ultramicro lens is sent into the digestive tract of the human body, especially the esophagus and stomach, through the gastroscope tube. The gastroscope tube is also provided with a working pipeline, through which cleaning liquid can be input into the human body, and gastric juice can also be extracted through the working pipeline. [0003] However, when cleaning the stomach or digestive tract, the patient may cause the stomach to contract sharply due to pain, retching, etc., causing gastric juice or bleeding to surge up along the working channel of the gastroscope, reverse contamination or even destroy the control of the gastroscope tub...

AI Technical Summary

Problems solved by technology

[0007] The current anti-reflux protection is mostly composed of pressure valve and check valve structure, because the action structure of the valve group, such as valve ball or valve cover, spring, etc. will affect the flow cross-sectional area of ​​the channel, and the structure of the valve group is easy to be swallowed. The undigested matter that comes out is blocked, which affects the switch state of the valve group structure, so the anti-reverse structure of the valve group structure is not suitable for the working channel of the gastroscope

[0008] And especially the ordinary anti-reflux valve group will completely block the reflux. If the working pipeline of the gastroscope is used for negative pressure suction, such as the extraction of gastric juice, the anti-reflux valve group is not suitable for such scenarios.

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