Dialyzate flow improvement type dialyzer

Abstract

The invention provides a dialysate flow improvement type dialyzer, which comprises a dialyzer shell, wherein a membrane bundle composed of a plurality of hollow fiber membrane filaments and a plurality of solid fibers is arranged in the dialyzer shell, the material of the solid fibers is the same as the main body material of the hollow fiber membrane filaments, the solid fibers are evenly distributed in the membrane bundle, and the number of the solid fibers accounts for 25% or below of the number of all the membrane filaments. According to the invention, a certain number of solid fibers made of the material are added into the membrane bundle, so that the biocompatibility of a product is not affected while the flowing state of dialysate in the using process can be improved, bending of membrane filaments can be reduced, the size of the membrane bundle is reduced so as to reduce the diameter of the shell, and the manufacturing cost of the dialyzer is reduced; and the dialysate flow improvement type dialyzer is easy and convenient to assemble and beneficial to application and popularization.

Description

technical field [0001] The present application relates to the technical field of dialyzers, in particular to a dialyzer with improved dialysate flow. Background technique [0002] A dialyzer is a blood purification device that uses convection and diffusion to remove excess water and toxins from the patient's body. The blood in the patient's body is introduced into the hollow fiber membrane through the extracorporeal circulation device, and then the dialysate flows outside the hollow fiber membrane, and the exchange of toxins is completed under the action of the concentration gradient through the cross flow, thereby removing the accumulated toxins in the patient's body. [0003] During this treatment process, the flow state of the dialysate plays a very important role in the removal of toxins, and after the dialysate enters the dialysate chamber from the dialysate inlet, since the hollow fiber membrane bundle occupies most of the dialyzer shell The dialysate will flow along ...

AI Technical Summary

Problems solved by technology

[0004] Existing dialyzers generally adopt a structure that increases curls or microwaves to prevent the aggregation between the hollow fiber membranes, so as to improve the fluidity of the dialysate around the intermediate membranes, thereby improving the uniformity of the dialysate flow, but it needs to be controlled The size of the wave of the hollow fiber membrane bundle, reducing the degree of wave will affect the flow uniformity of the dialysate, increasing the degree of wave will make the subsequent assembly of finished products more difficult

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