Combined cover, double-valve vertical infusion bag and manufacturing method thereof

Abstract

The invention provides a combined cover, a double-valve vertical infusion bag and a manufacturing method thereof. The combined cover comprises an outer cover (1), an inner cover (2) and a gasket (3) arranged between the inner cover (2) and the outer cover (1), the gasket (3) is designed integrally and comprises two round portions which are overlapped partly, the round portions are combined to be butterfly-shaped, opening bosses (4) are arranged at the top of the outer cover (1), and clamping grooves in clamped fit with the gasket (3) are formed in the inner sides of the opening bosses (4). According to the combined cover, the gasket can provide bigger retraction force to enable a colloid of the gasket to tightly hold a syringe needle without liquid leakage; the combined cover is reasonable in design, safe and reliable. The double-valve vertical infusion bag is controlled through a medicine adding valve and an infusion passage valve, so that sterilization and pollution can be reduced; automatic contraction can be realized without air incoming during infusion, so that secondary pollution can be avoided, and more convenience is brought to medicine adding.

Description

technical field [0001] The invention relates to the field of medical packaging, in particular to a combination cap, a double-valve standing infusion bag and a preparation method thereof. Background technique [0002] At present, medical infusion bags or bags use a sealed combination cover, which is mostly composed of three parts: an outer cover, a gasket and an inner cover; the pharmaceutical factory pours the liquid medicine into the infusion bag and then heats and welds the combination cover on the bag mouth for sealing. There is a pull ring on the cover. When the medical personnel give medicine to the patient, they can pull up the pull ring of the outer cover, so that the connecting part of the outer cover is separated from the outer cover to expose the gasket. Inject or output liquid medicine. The function of the gasket is mainly for better sealing and avoiding leakage of the liquid medicine during infusion. In order to avoid secondary disinfection during infusion afte...

AI Technical Summary

Problems solved by technology

[0003] The existing double-valve easy-folding combined cover has an inner pad divided into a 400m track type and a dumbbell shape (also known as a figure 8 shape). The shape of the 400m track type inner pad is like the shape surrounded by a 400m track. Or the gasket slips easily after the infusion set is pierced, causing liquid leakage; the disadvantage of the dumbbell shape (figure 8) is that after the syringe or the infusion set is pierced, it is easy to insert the inner pad into the bottle, and the gasket is pierced by the needle. Finally, the retraction force is limited, and the puncture hole cannot be retracted tightly with the puncture needle, especially the radius of the circular part is too small, which is prone to leakage during infusion

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