Inside sealing type soft bag connector combined cover and soft bag with same

Abstract

The invention provides an inside sealing type soft bag connector combined cover and a soft bag with the same, and belongs to the technical field of medicine packaging. A handle easy to fold is arranged on the top of a cover body. A rubber plug is arranged in a rubber plug cavity of the cover body. A first seal ring is arranged on the top in the rubber plug cavity. A sealing buckle groove is formed in the inner circumferential face of the rubber plug cavity. A second seal ring and a third seal ring are arranged on the portions, located on the outer side of a spherical-surface-shaped pit, of the upper surface and the lower surface of a rubber plug. The top end of a cylindrical tubular opening pipe of a connector is blocked into a closed end through an inside sealing partition layer. A fourth seal ring is arranged on the upper surface of the inside sealing partition layer. A sealing buckle ring is arranged on the outer circumferential face of the cylindrical tubular opening pipe. The first seal ring is matched with the second seal ring. The third seal ring is matched with the fourth seal ring. The sealing buckle ring is matched with the sealing buckle groove. The connector of the inside sealing type soft bag connector combined cover extends into the space between two layers of films of a soft bag body. The connector and the films are welded together through heating or pressed together through heating, and a liquor filling opening is formed in the soft bag body and is welded and sealed after liquor filling. By means of the inside sealing type soft bag connector combined cover, leakproofness and safety of use can be ensured.

Description

technical field [0001] The invention relates to a combined cover for soft bag infusion and a soft bag with the combined cover, belonging to the technical field of medical packaging. Background technique [0002] With the development of infusion packaging technology and changes in the infusion market, the packaging method of infusion has changed from glass bottles to non-PVC composite film soft bags. Since the single-mouth tube soft bag infusion can not effectively distinguish between the drug delivery port and the dosing port, the double-tube double-valve soft bag infusion has gradually become the mainstream. The analysis of various double-tube double-valve combined cap interface forms, the existing technologies are generally as follows Disadvantages: 1. The two tubes are integrated, and the same welded joint is used, that is, a single seat and two tubes, and too much material is used. 2. When the interface combination cover is combined, it needs to be welded, which increas...

AI Technical Summary

Problems solved by technology

Since the single-mouth tube soft bag infusion can not effectively distinguish between the drug delivery port and the dosing port, the double-tube double-valve soft bag infusion has gradually become the mainstream. The analysis of various double-tube double-valve combined cap interface forms, the existing technologies are generally as follows Disadvantages: 1. Two pipes are integrated, using the same welded joint, that is, single seat and double pipes, using too much material

2. Welding is required when the interface combination cover is combined, which increases consumption and scrap rate, and there is a risk of contamination by visible foreign matter during welding

3. The combination of non-welded combined caps may cause the risk of contamination of the finished infusion solution due to poor sealing during use.

4. Due to the double-layer structure of the combined cover, the interface diameter of the combined cover cannot be reduced to the minimum, resulting in an increase in the amount of materials

5. The bag making and filling method of filling the liquid medicine in the interface of the soft bag and then welding the combined cover will cause the introduction of carbonized foreign matter when the interface is welded; 6. In order to ensure the sealing of the welded interface combination cover, the welding surface must have Sufficient contact area resulting in increased material usage

[0003] For example, the technology disclosed in the invention patent application with the publication number CN103431999A, the publication date is December 11, 2013, and the title is "Single Folding Handle No Inner Cover Type Infusion Combination Cover and Interface and Its Equipment", when used in the bag The sealing of the liquid medicine is completely realized by the outer cover pressing the rubber plug. During production, storage, transportation, transfer and use, due to the change of the pressure inside the bag, it is easy to cause the liquid medicine to leak through the gap of the rubber plug, resulting in leakage and drug leakage. The liquid is contaminated with bacteria; at the same time, the rubber plug is in direct contact with the liquid medicine, and the compatibility between the rubber plug and the liquid medicine needs to be investigated during production, and the rubber plug must use butyl rubber plugs or higher quality rubber plugs, production costs and use risks Too high; moreover, there is no support layer between the rubber plug and the tubular interface, and the contact surface is small. Inserting a steel needle or a plastic needle during use may cause the rubber plug to shift or be severely dented, resulting in lax needle holding and leakage

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