Bubble prevention three-way structure used for disposable infusion apparatus

Abstract

The invention discloses a bubble prevention three-way structure used for a disposable infusion apparatus. The bubble prevention three-way structure comprises a three-way pipe fitting body. The three-way pipe fitting body comprises a main pipe connected with an infusion hose, an infusion branch pipe connected with the infusion hose, and a medicine adding branch pipe. The infusion branch pipe is arranged into a V-shaped structure. One port of the infusion branch pipe is connected with the infusion hose, and the other port of the infusion branch pipe is formed in the opening part of the medicine adding branch pipe or close to the opening part of the medicine adding branch pipe. A sealing cover is arranged at the opening part of the medicine adding branch pipe. The bubble prevention three-way structure has the following advantages that due to the new structure, a continuous infusion channel is formed by the infusion branch pipe and the main pipe, it is avoided that air is left in the medicine adding branch pipe, and it is also avoided that air enters human bodies and the danger of aeroembolism is caused; due to the V-shaped design of the infusion branch pipe, the joint of the infusion branch pipe and the main pipe is lifted, and therefore during infusion, liquid medicine can have a certain speed under the effect of gravity, liquid medicine forms upward impacting force when entering the three-way structure, and air in the medicine adding branch pipe is discharged to be maximum extent before infusion.

Description

technical field [0001] The invention relates to a three-way structure of a disposable infusion set, in particular to a bubble-proof three-way structure for a disposable infusion set, and belongs to the technical field of medical devices. Background technique [0002] A common disposable medical consumable that is mainly used for intravenous infusion after aseptic treatment to establish a channel between the vein and the liquid medicine. It is generally composed of an intravenous needle, a protective cap, an infusion hose, a liquid medicine filter, a flow rate regulator, a drip pot, a cork puncturer, and an air inlet pipe air filter connection. Before use, the medical personnel check the validity period of disinfection of the disposable infusion set and whether there is any air leakage or other abnormalities in the packaging, take out the infusion set, insert the conical joint part into the infusion bottle, hang the infusion bottle on the infusion rod, and exhaust until the m...

AI Technical Summary

Problems solved by technology

However, there is also a section of the dosing tube cavity above the intersection of the infusion tube of the three-way structure and the dosing tube, and such a design will cause an air column 13 ( like figure 1 Shown) When the liquid medicine is added, the liquid will bring air into the human body, resulting in the risk of air embolism

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