Adsorption enhanced dialyzer

Abstract

The invention discloses an adsorption enhanced dialyzer. The adsorption enhanced dialyzer comprises a hemodialysis cavity (1), wherein a plurality of first hollow fiber membrane filaments (2) and a plurality of second hollow fiber membrane filaments (3) are arranged in the hemodialysis cavity (1), and the membrane flux of the second hollow fiber membrane filaments (3) is larger than that of the first hollow fiber membrane filaments (2). By applying the technical scheme provided by the embodiment of the invention, macromolecular substances in a patient are removed by improving the adsorption effect in the hemodialysis process of the patient; meanwhile, a perfusion device does not need to be additionally adopted, additional replacement liquid does not need to be added, the extracorporeal circulation blood volume of the patient can be reduced while the burden of the patient is relieved, and the cardiovascular burden of the patient is relieved; and besides, due to the internal filtration performance of the high-performance dialyzer, the problem that the flux of the specially-made adsorptive hollow fibers is reduced is effectively delayed, and the capacity of the dialyzer for scavengingmedium-molecular and macromolecular substances is enhanced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an adsorption-enhanced dialyzer. 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. Although convection and diffusion can better remove small and medium molecules in the patient's body, in order to ensure that the patient minimizes the loss of nutrients such as protein, it is determined that the pore structure of the dialysis membrane should not be too large, which limits the ability of the dialyzer to medium and large molecules. The removal of substances causes the accumulation of medium and large molecules in the patient's body and causes complications. For the removal of medium and macromolecular substances, the existing technical means 1. adopt hemodiafiltration (remove more medium and macromolecular substances by increasing the convective flow rate of t...

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Problems solved by technology

4. Adsorptive membrane material is used, but due to the limitations of the membrane material itself, the pores of the membrane surface material are relatively small, resulting in a weak convective removal ability of this dialyzer, which cannot efficiently remove small and medium molecules and water in the patient's body

[0003] However, the hemofiltration method requires a special dialyzer and a large amount of replacement fluid. The cost of a hemodiafiltration is basically twice the price of ordinary dialysis.

[0004] Adsorptive dialyzers can increase the removal performance of middle molecular substances, but in the process of use, due to the large amount of adsorption of medium and large molecular substances, the flux of the membrane is continuously reduced, which reduces the ability of the dialyzer to remove uremic toxins.

[0005] Although the combination of hemodialysis and hemoperfusion can make up for the weak adsorption function of hemodialysis, it will also increase the economic burden of patients due to the need to add additional perfusion devices.

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