Disposable self-limiting and self-stopping transfusion system

Abstract

The invention discloses a disposable self-limiting and self-stopping transfusion system, which comprises a bottle plug puncture unit protecting jacket, a bottle plug puncture unit, an air filtering membrane, an air plug, an upper flexible pipe, a dropping funnel cover, a latex cap, a self-limiting device, a self-stopping device, an upper dropping funnel, a lower dropping funnel, a pressurizing ball, a lower flexible pipe, a flow adjuster, a liquid medicine filter and an intravenous infusion needle, wherein the self-limiting device consists of the air plug, the air filtering membrane and an exhaust channel on the dropping funnel cover; the self-stopping device arranged inside the dropping funnel comprises a limiting shaft sleeve which is embedded into an opening section at the upper end of an inner cavity of the lower dropping funnel, and a liquid-stopping valve; the liquid-stopping valve consists of a floating cover, a floating shaft and a soft suction cup; the floating shaft is tightly matched with an inner sleeve of the floating cover through the centre of the limiting shaft sleeve; the upper part of the soft suction cup is embedded inside a concave part at the bottom of the floating shaft and limited by the limiting shaft sleeve; the floating cover and the soft suction cup are connected through the floating shaft and move up and down in the inner cavities of the upper dropping funnel and the lower dropping funnel. The transfusion system can quickly discharge liquid automatically, control the liquid level height inside the dropping funnel, and automatically discharge air in the dropping funnel after the bottle plug puncture unit is inserted into a large transfusion bottle plug; the liquid-stopping valve can automatically seal the pipeline to prevent the air from entering inside the lower flexible pipe to lead to blood return when no liquid medicine is in a medicine bottle or a little liquid medicine is in the dripping funnel in an infusion process.

Description

technical field [0001] The invention relates to a disposable medical device, in particular to a self-limiting and self-stopping liquid transfusion device. Background technique [0002] Disposable infusion sets used clinically in clinical units of various domestic medical institutions are mainly composed of bottle stopper puncturer protective cover, bottle stopper puncturer, air filter, infusion hose, dropper, dropper, flow regulator, liquid medicine filter It is composed of a device and an venous infusion needle. The traditional use method is: some need to get rid of the air in the infusion tube before performing venipuncture on the patient. There are usually two manual methods: one is to insert the cork piercer into the upside-down infusion bottle stopper, make the dropper discharge the air in the dripping funnel above the lower liquid outlet, and let the dripping funnel be filled after half of the dripping funnel is filled. A large number of air bubbles can be avoided by ...

AI Technical Summary

Problems solved by technology

But these two methods will consume a lot of time for the medical staff. If the operation is slightly improper, the medical staff will have to release a certain amount of liquid medicine to get rid of the air bubbles, which will cause inconvenience to the medical staff.

There are also exhaust devices or liquid-stopping devices, but these products have relatively single functions during clinical use, and some self-stopping liquids are not effective

Images