Bag bending dual-pressure valve

Abstract

The invention discloses a bag bending dual-pressure valve, which consists of a pipe bag and a clamp. The bag bending dual-pressure valve is characterized in that the pipe bag is a hollow elastic straight pipe and the clamp is an approximately 8-shaped open pipe section consisting of two C shapes, wherein the pipe bag penetrates through the first C shape of the clamp, and is connected to an indwelling pipeline; after infusion is finished and connection with an indwelling part is removed, the pipe bag is bent, and is clamped and plugged into the inner space of the second C shape of the clamp to realize positive pressure pipe sealing; during infusion, the negative pressure design expectation of verifying pipe sealing effects is achieved only by extracting the pipe bag from the inner space of the second C shape of the clamp.

Description

technical field [0001] The invention relates to a tube bag valve for liquid infusion, in particular to a curved bag double pressure valve which can generate double pressure (ie positive pressure and negative pressure) to prevent venous blood backflow for medical purposes. Background technique [0002] At present, in the process of intravenous infusion treatment, due to the limitations of the disease or the patient's own conditions, long-term repeated infusion treatment is often required, or the drug solution needs to be temporarily injected into the infusion pipeline several times during the infusion process, and enters the blood vessels of the human body to achieve The purpose of treating diseases; in order to reduce the damage to the patient's superficial venous vessels, as well as to alleviate the pain of the patient and the labor intensity of the medical staff, in this case, the structure of the three-way tube and the heparin cap is mostly connected in series in the pipel...

AI Technical Summary

Problems solved by technology

However, there are certain defects and deficiencies in the above-mentioned technology: before each use, the rubber sealing cap to be punctured on the heparin cap must be partially sterilized, and the rubber plug of the heparin cap must be punctured with an injection needle to be connected with the infusion tube so that the medicinal liquid can pass through The puncture needle tube enters the infusion tube, which is troublesome to operate and has the risk of being stabbed by the needle; in clinical practice, the patient cannot use anticoagulants such as heparin due to certain diseases (such as hemophilia, or blood coagulation disorder). The sealing method of the heparin cap on the infusion tube and the indwelling needle is limited; because there is no anticoagulant such as heparin sodium in the heparin cap, after the infusion of the drug solution, after the treatment is over, the medical staff need to puncture the heparin cap with a syringe and an injection needle. A certain amount of anticoagulant is added to the infusion tube to prevent the infusion tube and indwelling needle plug from being blocked by blood backflow, which makes the operation of medical staff more cumbersome and inconvenient; also because of this operation, the rubber sealing cap is named heparin cap; through The anticoagulant action of injecting heparin sodium with the heparin cap is called tube lock

[0005] The above technical solutions are all based on the positive pressure realization of the needle-free connection, and their common shortcomings are the risk of microbial invasion and the structurally complex factors.

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