Self-contraction infusion bottle bag without generating negative pressure during transfusing

Abstract

The invention relates to a self contraction infusion bottle bag which does not produce negative pressure during infusion, pertaining to the container which has a fixed shape and from which liquid can be fully released without gas infused. The bottle bag consists of a bottle bag body, bottle bag outlets with fixed shapes at the two ends of the bottle bag body and a bottle bag bottom with a fixed shape. The bottle bag body ring-shaped local parts of the middle ring-shaped parts at the two ends of the container, which take up half to four fifths of the total height of the two ends of the bottle bag body, are the main self contraction parts of the bottle bag body. The cross section of the main self contraction part is oval-shaped and one or more thin-walled self contraction rings are provided on the bottle bag wall of the main self contraction part. The ratio of the lengths of the long axis and the short axis of the oval-shaped cross section is 1.00:0.20 to 0.90. Since the thin-walled self contraction rings of the bottle bag are not likely to be completely closed by atmospheric pressure, the inside of the bottle bag is always a full circulation space and produces no negative pressure, thus blood returning can be prevented and the infusion can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of liquid containers, and in particular relates to a container with a fixed shape that can fully release the liquid in the container without inputting gas into the container. Background technique [0002] In order to make the infusion bottle not need air return pipe to introduce air into the bottle during the infusion process, Chinese patent 200420036457.X "infusion bottle" discloses a kind of infusion bottle which reduces the empty volume of the self-shrinking bottle bag with the liquid in the bottle. The bottle is made of soft material, which includes: a bottle body, a bottle neck arranged on the upper part of the bottle body and a bottle bag bottom arranged on the lower part of the bottle body, guide ribs are arranged on the bottle body, and the bottle body and the bottle neck There is a shoulder between them, the guide rib extends from the bottom of the bottle bag to the shoulder, the cross section of th...

AI Technical Summary

Problems solved by technology

But this kind of self-shrinking infusion bottle is very easy when starting self-shrinkage, and the bottle bag mouth and bottle bag bottom are divided into two parts that the liquid is not easy to unimpeded in the middle of the bottle in a relatively sealed state, so that the bottle bag inner cavity of the bottle bag mouth part A certain degree of negative pressure may be generated, and blood return will occur, which will affect the normal infusion

[0003] 200420031825.1 "Self-draining liquid infusion bottle" discloses a bottle whose cross-section is elliptical, the longitudinal section of the bottle along the long diameter direction is similar to a spindle-shaped bottle, the wall thickness of the middle part of the bottle body is smaller than that of the upper and lower parts, and the wall thickness of the middle part is smaller than that of the upper and lower parts. The wall thickness of the long diameter of the oval is thicker than that of the short diameter. When the infusion is deformed, the two oval parts face the middle to suck, so it is easy to seal the liquid medicine channel in the middle of the bottle and form a relatively sealed state in the middle of the bottle. The mouth of the bag and the bottom of the bottle bag are divided into two parts where the liquid is not easy to flow, so that a certain degree of negative pressure may be generated in the inner cavity of the bottle bag at the mouth of the bottle bag, and blood will return, which will affect the normal infusion

However, the division of the short-diameter wall part and the long-diameter wall part is not pointed out, and the disclosure is insufficient

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