Four-stage sealed bacteria-blocking needleless dosing connector

Abstract

The invention discloses a four-stage sealed bacteria-blocking needleless medicine adding connector which comprises a screw base connector, a sealing plug and a shell, the screw base connector comprises a conical pipe, a positioning column and a Luer connector which are sequentially connected from top to bottom, and an annular buckle boss is arranged on the outer wall face of the positioning column in the circumferential direction of the positioning column; the outer wall face of the sealing plug is composed of a first oblique conical face, a first cylindrical face, a second oblique conical face, a second cylindrical face, a third cylindrical face and a sealing clamping ring which are sequentially connected from top to bottom. An inner cavity of the shell is composed of a first oblique conical cavity, a first cylindrical cavity, a second oblique conical cavity and a second cylindrical cavity which are sequentially connected from top to bottom. And a buckle groove matched with the buckle boss is formed in the second cylindrical cavity. According to the four-stage sealed bacteria-blocking needleless medicine adding connector, four sealing structures are adopted, so that the four-stage sealed bacteria-blocking needleless medicine adding connector is convenient to assemble, water leakage and air leakage are prevented, the bacteria-blocking effect is improved, and the infusion safety of a patient can be guaranteed.

Description

technical field [0001] The invention relates to a four-stage sealed antibacterial needle-free drug dosing joint, which belongs to the field of medical devices. Background technique [0002] With the rapid development of intravenous infusion, needle-free airtight infusion technology is also widely used in clinical practice. Needle-free infusion refers to a type of device that can repeatedly deliver or extract liquid to the infusion line without puncture. The infusion provides flow channels and injection ports. At present, most of the needle-free drug dosing connectors have complex structures, cumbersome operations, poor airtightness, and the inability to eliminate the residual drug liquid in the connectors, which brings the risk of exponential infection to patients during the infusion process. It is necessary to improve the sealing structure of the needle-free dosing joint, improve its antibacterial effect, and further ensure the safety of patients' infusion. Contents of t...

AI Technical Summary

Problems solved by technology

At present, most of the needle-free dosing joints have complex structures, cumbersome operations, poor airtightness, and the inability to eliminate the residual liquid in the joints, which brings exponential infection chances to patients during the infusion process.

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