Polypropylene double-valve easily-folding type combined cover for transfusion container

Abstract

The invention provides a polypropylene double-valve easily-folding type combined cover for a transfusion container. The polypropylene double-valve easily-folding type combined cover is characterized by comprising an inner cover, an outer cover and a rubber plug used for puncturing in transfusion and dispensing, and is characterized in that the rubber plug is in an integrated design, and adopts a waist-drum-shaped structure formed by two circles; a positioning groove and a positioning boss, which are clamped with the rubber plug, are arranged at the upper part of the outer cover of the combined cover. During manufacturing of the cover body, the cost is low, two needle puncturing holes do not pollute mutually when in use, the upper cover of the inner cover is not liable to deform and collapse, and the phenomenon that the rubber plug moves horizontally or falls into a bottle under the action of an external force can be avoided when needle heads are used for puncturing; risk and defects of products in the existing market are reduced, and related functions and performance of the products are better improved at the same time, so that the products are safer.

Description

Technical field: [0001] The invention relates to the field of medical packaging, in particular to the improvement of a new type of double easy-fold cap integrated rubber stopper combined cover. Background technique: [0002] There are two types of welded combination caps for large transfusion soft bags or bottle packaging. One is composed of an outer cap, an inner plug and an inner cap. Pulling the outer cover together with the ring-pull connection part exposes the needle hole on the inner plug, so that the medicinal solution can be injected into the bag or bottle, or the medicinal solution in the bag or bottle can be injected into human blood through the infusion set. The main function of the inner plug is that the medicine will not seep out of the large infusion bag or bottle because the inner cover is pierced by the needle tube during injection. However, since the place and time of dispensing medicine and infusion to the patient are different during use, the inner plu...

AI Technical Summary

Problems solved by technology

However, the inner plug of the combined cover of this structure is elongated and has the following problems: ① the elongated inner plug has high requirements on the cutting mold when cutting off the waste edge in the production process, which increases the production cost of the inner plug; When the needle is injected into the bag or bottle through the needle hole, the strip-shaped rubber stopper is prone to displacement in the combined cap, which affects the sealing performance of the whole combined cap; Stoppers tend to fall into bags or vials when needles are inserted

[0004]In addition, in the prior art, the upper cover of the inner cover is often easily deformed or collapsed during high-temperature sterilization, resulting in deformation of the cooperation between the inner cover, the rubber plug and the outer cover. It is prone to water ingress caused by deformation and enlargement of the fitting gap, and the risk of leakage of medical solution after puncture

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