Connecting device for medical purposes

Abstract

The invention relates to a medical connecting device which consists of an upper shell, a lower shell and an elastic valve core. The upper shell is equipped with an upstream end and a downstream end which have openings; a cavity is positioned between the upstream end and the downstream end. One end of the lower shell is hermetically connected and fixed with the downstream end of the upper shell, and the other end is a spiral joint. The elastic valve core is arranged in the cavity of the upper shell and the opening of the upstream end, one end of the elastic valve core is fixedly connected with the lower shell, and the other end is controllably sealed with the opening of the upstream end of the upper shell. The elastic valve core controls flow of liquid in the cavity by changing self-volume. The connecting device has the advantages of reasonable structure, delicate design and convenient use, and that the device can be connected with a plurality of infusion apparatuses such as an injector, an infusion set, an indwelling needle and an in vivo duct, etc., to treat patients. No needle is required by the connecting device, thus injuries and accidental infection of medical staff can be avoided in the course of transfusion operation and that liquid flows to the downstream medical apparatus in the normal direction by the connecting device is ensured.

Description

technical field [0001] The invention relates to a medical device, in particular to a medical connecting device. When it is connected between one medical device and another medical device, it facilitates the communication of liquid between them, and when disconnecting the upstream medical device, it ensures the positive flow of liquid through the connector in the direction of the outlet and downstream medical device. Background technique [0002] We know that when some fluid administration treatments are performed in the hospital, connectors or valves are usually used to control the flow of fluid from one medical device (such as an infusion set) to another medical device (such as an indwelling needle). Through the connectors or valves arranged in this way, the fluid source or other pipelines are connected to it, so that the liquid can flow therebetween, and it is used to control the input of medical fluid from the fluid source to the patient. When the fluid source is removed...

AI Technical Summary

Problems solved by technology

The above-mentioned prior art effectively eliminates liquid backflow and avoids blood clogging or coagulation in the catheter, but its structure is complicated, its manufacturing cost is high, and it requires high processing technology

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