Medical infusion apparatus having function of preventing blood return

Abstract

The invention relates to a medical infusion apparatus having a function of preventing blood return. The medical infusion apparatus comprises a bottle plug puncturing apparatus, a drip chamber and a vein needle, wherein the bottle plug puncturing apparatus, the drip chamber and the vein needle are sequentially connected through a duct; the drip chamber adopts a column cavity structure of which theaxis is horizontally arranged; a rotatable fan-shaped disk which is arranged in a cavity and is matched with the cavity is arranged on the drip chamber; the central angle of the fan-shaped disk is downwards and is greater than 90 degrees; the outer edge surface of the fan-shaped disk is in sliding sealing contact with the inner wall of the cavity; and the gravity center of the fan-shaped disk is adjacent to any side surface of the fan-shaped disk, so that the fan-shaped disk can rotate under the effect of own gravity to enable any side surface corresponding to the gravity center of the fan-shaped disk to deflect downwards and the other side surface of the fan-shaped disk to deflect upwards to be higher than the level surface of an axis of the fan-shaped disk. Through the adoption of the medical infusion apparatus disclosed by the invention, manual operation is not needed, and automatic cut out can be completed to realize the function of preventing blood return; and after drugs are changed, a liquid outlet is automatically opened, and infusion is continued.

Description

technical field [0001] The invention relates to medical supplies, in particular to a medical infusion set with the function of preventing blood return. Background technique [0002] The infusion set is a common medical product. Its main principle is to use the pressure generated by the height of the liquid to inject the medicine into the vein to realize intravenous infusion. In the process of treatment and rehabilitation of various diseases, the infusion set is an indispensable consumable . [0003] However, although the existing infusion sets can meet the basic infusion needs, due to the dependence on the liquid pressure, when the liquid medicine is infused and the needle cannot be pulled out or the liquid medicine can be replaced in time, the liquid level will drop and the pressure will decrease, and blood will return; Although the blood return itself will not cause harm to the body, it will seriously affect the patient's mood, causing a certain degree of panic, which wil...

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, in order to make up for the technical deficiencies in the prior art, the present invention provides a medical infusion set with the function of preventing blood return, so as to solve the problem of blood return caused by the drop of the liquid level of the existing infusion set, and avoid the problem of blood return under the drip funnel. Air enters into the infusion tube, bringing better medical care experience to patients

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