Transfusion device having automatic filtering, exhausting, automatic stopping and retarding blood return functions

Abstract

The invention relates to the technical field of the medical instruments and in particular relates to a transfusion device having automatic filtering, exhausting, automatic liquid stopping and retarding blood return functions. The transfusion device is capable of realizing secondary filtration on liquids by use of a filtering drainage membrane and a filtering liquid stopping membrane; air can be automatically exhausted in the transfusion process due to the exhausting opening of the drainage device; based on the siphon principle of the filtering drainage membrane, a trace transfusion mode is established and continuous positive pressure is formed to the needle point part when transfusion is about to be finished, and therefore, the purposes of retarding blood return and preventing thrombus and angiitis are achieved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an infusion device capable of automatic filtration, exhaust, automatic liquid stop and delayed blood return. Background technique [0002] Present infusion set is in the transfusion process, and the medicinal liquid in the infusion set flows down all the time, and medicinal liquid just stops when the venous pressure of human body and the gravity balance of medicine in the infusion set. After the liquid medicine stops, due to the diffusion of the liquid, the blood in the human body will flow back into the catheter of the infusion set. This phenomenon will not only cause panic for the patient, but also require nurses to spend time driving the blood back to the human body, and there is also the possibility of thrombus formation. The possibility of even leading to the occurrence of medical malpractice. [0003] Present infusion sets (ordinary and precision type) cannot compl...

AI Technical Summary

Problems solved by technology

After the liquid medicine stops, due to the diffusion of the liquid, the blood in the human body will flow back into the catheter of the infusion set. This phenomenon will not only cause panic for the patient, but also require nurses to spend time driving the blood back to the human body, and there is also the possibility of thrombus formation. the possibility of even leading to the occurrence of medical malpractice

[0003] Present infusion sets (ordinary and precision type) cannot completely solve the problem of blood return that occurs easily after stopping the infusion because they cannot completely solve the problem of automatically stopping the infusion. Infusion device with gas, automatic hemostasis and delayed blood return function

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