Anti-blood return medical infusion set

Abstract

The invention discloses an anti-blood return medical infusion set and belongs to the technical field of medical instruments. The anti-blood return medical infusion set comprises a cork puncture unit, a Murphy's pipe, an intravenous infusion needle and an infusion tube; a liquid-stopping device is arranged at the infusion pipeline between the cork puncture unit and the intravenous infusion needle; the anti-blood return medical infusion unit also comprises a volume reduction anti-blood return hose with elasticity lower than the infusion tube; two ends of the volume reduction anti-blood return hose are connected with the infusion tube between the liquid-stopping device and the intravenous infusion needle; when the anti-blood return medical infusion unit is used for infusion, the vertical distance between the lower end part of the volume reduction anti-blood return hose and the port of the intravenous infusion needle is not smaller than the height of a medical cylinder corresponding to the human body venous pressure. The anti-blood return medical infusion set is simple in structure, excellent in anti-blood return effect, and capable of changing the anti-blood return time of the anti-blood return medical infusion set by changing the hardness and / or the length of the volume reduction anti-blood return hose.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a medical infusion set for preventing blood backflow during infusion. Background technique [0002] During the infusion process of most of the existing medical infusion sets, the medicinal liquid in the infusion set flows down until the venous pressure of the human body is balanced with the gravity of the medicine in the infusion set. After the liquid medicine stops, the blood in the human body will flow back into the infusion tube of the infusion set due to the diffusion of the liquid. Thrombosis may even lead to medical malpractice. [0003] In order to solve these problems, there are related anti-reflux transfusion devices at home and abroad, which mainly adopt the following two solutions: [0004] One of the schemes is: adopt a structure such as a floating ball or a buoy. During the infusion process, the floating ball floats up, and the liquid medicine flows down al...

AI Technical Summary

Problems solved by technology

In the current implementation, the liquid discharge pipes are only provided with a liquid inlet, and the flow rate of the liquid medicine is controlled by the components that partially block the front end of the liquid discharge pipe or the structure of the slow flow device. Since the flow rate of the liquid medicine is related to the pressure and the aperture, Using a small amount of residual liquid cannot control the flow rate of the liquid medicine, and the liquid medicine is difficult to flow evenly. At the same time, the production process of the product is difficult to control, the process is complicated, the production cost is high, and it is difficult to achieve the expected anti-bleeding effect

Images