Self-closed safe transfusion device

Abstract

The invention discloses a self-closed safe transfusion device. The device comprises a bottle insertion needle, a first transfusion hose is arranged at one end of the bottle insertion needle, and a pressure adjustment device is arranged on the first transfusion hose; a rubber sleeve is communicated with the end, away from the bottle insertion needle, of the first transfusion hose, a drip cylinder is arranged in the rubber sleeve, and the two ends of the drip cylinder are connected with the inner wall of the rubber sleeve through retractable tubes; a first metal conductor is arranged at the end,close to the first transfusion hose, of the drip cylinder, a second metal conductor is arranged on the inner wall of the rubber sleeve, and the first metal conductor is matched with the second metalconductor; multiple springs are arranged at the ends, away from the first metal conductor and located at the outer sides of the retractable tubes, on the drip cylinder; air is prevented from enteringthe body of a patient, the pressure in a transfusion tube is not lowered regardless of transfusion starting or near transfusion ending, blood in the artery or vein cannot flow back into the transfusion tube or a transfusion bottle, and the self-closed safe transfusion device is simple in structure and easy and convenient to operate.

Description

technical field [0001] The invention relates to the medical field, in particular to a self-closing safety transfusion device. Background technique [0002] At present, all medical units use disposable infusion sets when infusing patients, which is convenient and can effectively prevent the mutual transmission of diseases. However, this disposable infusion set has its disadvantages. When the liquid medicine delivery is about to be completed, the infusion line cannot be automatically closed so that the pressure of the infusion tube is lower than the pressure in the blood vessel, causing the patient's blood to pour into the infusion tube to cause coagulation. When the medical staff is not careful, a large amount of air may be injected into the patient's body, causing blood clots or air embolism in the patient, which is life-threatening. [0003] At present the deficiency of above-mentioned infusion set also has some solutions. For example, Chinese Patent No.: 200580030194.9...

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned invention can realize the automatic sealing of the infusion pipeline, when the infusion starts, the pressure in the infusion tube below the buoyant body is greatly reduced because the buoyancy of the floating body hinders the downward flow of the medicinal liquid when the infusion is started. During the pipeline, the amount of liquid medicine remaining in the infusion tube is very small, which also causes the pressure in the infusion tube to drop greatly. It will often flow back into the infusion tube, or even back into the medicine bottle, causing blood coagulation in the infusion tube or medicine bottle, which may endanger the life of the patient

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