Bag body structure of novel dry powder bag

Abstract

The invention discloses a bag body structure of a novel dry powder bag. For a bag body (2), an inclined lower sealing edge (21) is arranged on the lower part of a conduit (15), the end part of a straw (17) is bent along the angle of inclination of the lower sealing edge (21), and the end part of a water outlet filter element (18) is positioned on the bottom of the lower sealing edge. According to the novel bag body, the lower sealing edge is designed, and the flow direction of a water route is replanned, so that the flowing route of dialyzate is extended to the longest, the dialysis effect is improved, and the residue of the dialyzate is avoided.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a bag body structure of a novel dry powder bag. Background technique [0002] Traditional dialysis is a selective diffusion process that utilizes substances of different molecular weights to pass through a semipermeable membrane to separate impurity molecules with different molecular weights. Usually, the semi-permeable membrane is made into a bag, the sample solution is placed in the bag, and the dialysis bag is immersed in water or buffer solution, the molecules with large molecular weight in the sample solution are trapped in the bag, while the small molecular substances continue to diffuse Dialyze out of the bag until the concentrations on both sides of the bag reach equilibrium. The sample solution remaining in the dialysis bag without being dialyzed is called "retention solution", and the solution outside the bag (membrane) is called "exudate" or "dialysis solution...

AI Technical Summary

Problems solved by technology

[0003] However, the traditional dialysis bag dialysis operation is inconvenient. At the same time, in order to make the impurity molecules in the sample solution seep out of the semi-permeable membrane as much as possible, it is necessary to continuously maintain the power of dialysis, that is, the diffusion pressure. formed by a concentration gradient

This requires frequent replacement of the dialysis solution, and the dialysis rate is slow, resulting in an increase in dialysis costs

On the other hand, during the dialysis process, because the dialysate molecules continue to enter the dialysis bag through the semi-permeable membrane, the volume of the retained fluid increases continuously, and the dialysis bag may even burst, resulting in the loss of the dialysis sample.

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