High-pressure syringe connection tube

Abstract

The invention belongs to a metical apparatus, particularly relates to a high-pressure syringe connection tube used during the high-pressure injection process, which comprises two input ends and one output end, wherein at least one input end is provided with an anti-backflow valve device, the anti-backflow valve device comprises an inlet tube, an intermediate body and an outlet tube, which are sequentially connected with each other from top to bottom, a ball floater with the floating force in the liquid greater than the gravity force of the floater is arranged inside the intermediate body, andwhen the ball floater is under the floating force effect of the liquid, the ball floater floats upwards to seal the inlet tube; and when the anti-backflow valve device is under the injection state, liquid can flows from the inlet tube to the outlet tube through the intermediate body. By adopting the above technical scheme, when suffering the floating force effect of the liquid, the normal application of the anti-backflow valve device can be ensured, and the phenomenon that when the pressure is overlarge, the anti-backflow valve device of the high-pressure syringe connection tube is failed canbe prevented.

Description

technical field [0001] The invention belongs to a medical device, in particular to a high-pressure injector connecting tube suitable for high-pressure injection. Background technique [0002] At present, the connecting tube is mainly used as the link between the syringe and the injection needle, and the connecting tube used in the injection of the contrast liquid is two input ports and one output port. When in use, two input ports can be injected at the same time, a single input port can be injected, and two input ports can be alternately injected multiple times; when using a single input port to inject input, especially use a single input port high pressure syringe When inputting, the commonly used injection speed is 2-4 ml per second. When perfusing, the general injection speed is 6 ml per second, or even 8 ml per second. The connecting pipe generates a large pressure, causing the liquid in the connecting pipe to easily flow back along the other input end of the connectin...

AI Technical Summary

Problems solved by technology

However, since the anti-reflux valve device controlled by the diaphragm valve is controlled by the deformation and reset of the diaphragm valve, when the pressure is too high, it will cause excessive deformation and displacement of the diaphragm and cannot be reset, making the anti-reflux valve device Ineffective, reflux phenomenon occurs, not only can not reach the set injection speed, but also will cause the drugs in the two syringes to confuse each other

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