Medical infusion soft bag and method for producing the same, and shaping method

Abstract

The invention discloses a medical soft infusion bag, which comprises an infusion bag body as well as an infusion bag mouth and a suspension structure which are connected with both ends of the infusion bag body respectively, wherein the infusion bag body is made of flexible plastic and is flat under the state of filling a liquid medicine, that is, the width of the infusion bag body is larger than the thickness of the infusion bag body on the cross section of a connecting line between the infusion bag mouth and the suspension structure. The invention also provides a method for manufacturing the soft infusion bag and a shaping method after the filling of the liquid medicine. The bag body of the soft infusion bag is an integrity formed by injecting, stretching and blowing, has no connecting surfaces, does not need high-temperature hot-pressing plastic packaging, has no leakage caused by uncompacted plastic packaging of edges, has no pollution problem of air return to the liquid medicine, improves the safety of the infusion due to the fact that the phenomenon of blood backflow of vein blood is not generated, and can obtain best effects of the sterilization of the liquid medicine and the shaping of the soft infusion bag. The medical soft infusion bag has the advantages that the medical soft infusion bag has a reasonable structure and convenient use, has small volume shrinkage after the use, is easy to treat, has high performance-price ratio of raw materials, and reduces cost.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a filling container for medical liquid, more specifically, the invention relates to a soft bag for medical infusion. In addition, the present invention also relates to a manufacturing method and a shaping method of the soft medical transfusion bag. Background technique [0002] At present, medical infusion containers mainly include several commonly used types such as glass bottles, hard plastic bottles and soft plastic bags. [0003] Glass bottles have good transparency, compatibility, thermal stability, anti-extrusion deformation and water and gas barrier properties. These excellent properties make medical glass infusion bottles widely used. However, during the infusion process, it is necessary to continuously introduce air into the glass bottle through the ventilation line, so that the infusion can continue to proceed smoothly. Due to the need to introduce air into the...

AI Technical Summary

Problems solved by technology

[0007] However, the problem in the above two patents is that the structure is still similar to that of a hard plastic bottle, which makes the pressure contrast during the infusion process and causes venous blood to return, making the infusion not safe enough

At the edge weld, the problem of leakage still cannot be eliminated

Due to the use of soft plastic film as the raw material of the infusion bag, it is expensive and the cost of raw materials is high

In addition, when the liquid medicine is filled, the flat plastic film will be stretched into a curved surface, and the edges of the plastic bag will form wrinkles, which will cause uneven stress on the edges of the plastic bag and easily cause damage.

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