Mixing/charging port for medical treatment

Abstract

A mixing / charging port for medical treatment capable of reliably mixing / charging solutions or collecting the solutions in a medical instrument equipped with a solution feed passage, comprising a disc-like valve (1) having an insertion hole at the center, a cover (2) for restraining the valve (1) by covering at least the upper part of the periphery of the valve (1) with the center on the front surface side of the valve (1) left uncovered, and a round fitting hole (6) formed at the center of the cover (2) as anchor means for anchoring an insertion member to a mixing / charging port, the fitting hole (6) and the insertion member being so fitted to each other as to be capable of anchoring.

Description

technical field [0001] The present invention relates to a medical mixing port installed in a medical device for performing mixed injection of liquid from the outside of the liquid delivery path, or conversely drawing liquid from the inside of the liquid delivery path, for easy and reliable operation. Background technique [0002] In order to inject different kinds of medicinal liquids mixedly during infusion or blood transfusion for patients, or to sample the liquid flowing in the liquid delivery path, it is often necessary to set a side injection line in the main liquid delivery path. At this time, conventionally, a mixed injection port (stopper) for puncturing made of rubber is provided in the liquid delivery path of the infusion device, and an injection needle or the like is punctured through the mixed injection port for mixed injection. However, in the conventional method, when the needle is punctured from other than the puncture site specified in...

AI Technical Summary

Problems solved by technology

That is, first, the depth of the quasi-needle receiving part of the mixing port should be deepened, and this shape is not easy to remove the liquid leaked from the valve, and it is easy to be contaminated

Also, in the mixed injection port where the dummy needle receiving part is deep, mixed injection may start when the dummy needle is not fully inserted into the valve.

In this case, the volume of the mixed injection is reduced and an effective dose of the drug cannot be injected

Second, the structure of the valve is complicated, resulting in an increase in cost

And the more complex the structure, the more likely the valve will fail

[0005] On the other hand, it is difficult to insert the pseudo-needle of the syringe into the mixed injection port in the conventional simple (for example, a valve provided with only a slit on the disc-shaped elastic member), and even if it can be inserted, it is difficult to insert it. Difficulty keeping the syringe securely on the mixing port

This is because, conventionally, disc-shaped valves are made of a material with relatively high elasticity, and have a simple structure with only notches formed on the thicker body, so the resistance when inserted is large, and the deformation of the valve during retention is also small. big sake

In addition, if the wall thickness of the elastic member in the valve is reduced or a material with low elasticity is used to reduce the resistance during insertion, the check effect of the valve will be reduced, and liquid leakage may occur.

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