Needleless seal transfusion joint

Abstract

The sealed needle-less transfusion joint includes one casing, one liquid outlet joint with central hole adhered to the casing, one four claw elastic tab outside the needle tube, and one rubber tube outside the elastic tab matched with the liquid outlet joint and the needle tube wall. When the sealed needle-less transfusion joint is in use, the injector nipple compresses the rubber tube and the elastic tab to make the rubber tube form one saccule so that medicine liquid can enter to the saccule and further enter through the side hole to the needle tube, the liquid outlet joint and the retained vein needle. After finishing transfusion, the injector nipple is withdrawn, and the liquid is jetted fast through the liquid outlet joint owing to the resilience of the rubber tube, so as to rinse the vein needle and to avoid blood solidification.

Description

technical field [0001] The invention relates to a connector for liquid infusion, in particular to a needle-free airtight infusion connector for medical purposes that can generate instantaneous positive pressure and prevent venous blood return. Background technique [0002] At present, in the process of intravenous infusion treatment in China, due to the limitations of the disease or the patient's own conditions, it is often necessary to repeat the infusion for a long time or to temporarily add the drug solution to the infusion pipeline for many times during the infusion. A tee tube and a heparin cap are connected in series, which is used in the process of long-term infusion therapy during the disease period. Cooperate the heparin cap with the intravenous indwelling needle to form a fixed openable / closeable intravenous infusion channel. However, there are certain defects and deficiencies in the above-mentioned technology (apparatus): local disinfection is required before eac...

AI Technical Summary

Problems solved by technology

However, there are certain defects and deficiencies in the above-mentioned technology (apparatus): local disinfection is required before each use, and the heparin cap rubber plug must be punctured with an injection needle, which is troublesome and has the risk of being stabbed by a needle; The patient cannot use anticoagulants such as heparin and is restricted; there is no anticoagulant such as heparin in the heparin cap, and it is necessary for the medical staff to inject a certain amount of anticoagulant into the cap with a syringe after filling the liquid medicine. More cumbersome and inconvenient to operate

[0003] In summary, the dosing components of disposable infusion sets need to be improved, but at present there is no domestic solution that can simultaneously solve the above problems in a simple, economical, practical and safe way.

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