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

The invention relates to a soft infusion bag and a technology for a manufacturing method, which are applied in the manufacture and shaping of medical infusion soft bags, and the field of medical infusion soft bags. The effect of safety, small volume shrinkage and advanced processing technology

Active Publication Date: 2009-04-22
ANHUI DOUBLE CRANE PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] like figure 1 As shown, the projected contours of the turning points of the two main bag surfaces 5 are smooth curved transitions 7 . Because the bending part adopts a structure with angular edges, it is easy to crack and break due to stress concentration, and it is also difficult to manufacture.

Embodiment 2

[0049] like figure 2 and image 3 As shown, on the basis of Embodiment 1, the distance between the two main bag body surfaces 5 is further greater than the distance between the edges near the edge, that is, the slope 8 is from the middle of the main bag body surface 5 to its edge . Like this, promptly can make infusion soft bag 1 have certain capacity, guarantee again at the same time after infusion soft bag 1 infusion, can be fully flattened, promptly two main bag face 5 can fit fully, can not stay in the bag too much. Too much medicine. If the side of the infusion soft bag 1 is a very large plane, and the main bag body surface 5 is also completely plane, then when the infusion ends, it will not be able to fully shrink at the edge, which will cause a contrast between the pressure of the human body and the infusion bag, that is, the pressure of the human body's veins. The pressure is greater than the pressure of the liquid medicine in the infusion bag, causing venous blood...

Embodiment 3

[0052] like figure 1 and image 3 As shown, on the basis of the above embodiments, the connection between the infusion bag opening 3 and the infusion bag body 2 is made into a smooth curved surface transition 6 . This solution ensures that there is no obvious connection surface and connection structure between the tube body of the infusion bag mouth 3 and the infusion bag body 2, so no leakage will occur. At the same time, the smooth curved surface transition 6 is not easy to cause cracks. One-time molding during manufacture, the structure and process are simplified.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61J1/10A61J1/14A61M5/14
Inventor 刘新华孟广季李道月
Owner ANHUI DOUBLE CRANE PHARMA
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