In-vivo reverse isolated ultrafiltration dialysis device

Abstract

The invention relates to the technical field of medical instruments, in particular to an in-vivo reverse isolated ultrafiltration dialysis device. The device comprises an ultrafiltration dialysis unit, a negative pressure generation unit and a waste liquid drainage unit, the negative pressure generation unit communicates with the ultrafiltration dialysis unit, the waste liquid drainage unit communicates with the ultrafiltration dialysis unit, and the ultrafiltration dialysis unit comprises a base, a sealing plate and an ultrafiltration dialysis beam. The device can be buried in the central vein of a patient for a long time, and can bring convenience to the patient especially for the patient needing hemodialysis for a long time. The device brings possibility that the dialysis patient can still walk during dialysis, more importantly, the treatment cost of the dialysis patient can be effectively reduced, the puncture frequency of the dialysis patient can be effectively reduced, pain is relieved, and it can be guaranteed that the patient can conduct dialysis smoothly. Meanwhile, the device has no requirement on the specification of liquid collecting bags, and the liquid collecting bagswith different specifications can be used, so that the practicability of the device is better.

Description

technical field [0001] The invention relates to the technical field of medical instruments, more specifically, it relates to a reverse simple ultrafiltration dialysis device in the body. Background technique [0002] Hemodialysis, referred to as hemodialysis, also known as artificial kidney or kidney dialysis in popular terms, is a kind of blood purification technology. It uses the principle of semi-permeable membrane to remove various harmful and redundant metabolic wastes and excess electrolytes from the body through dispersion, so as to purify the blood and correct the water-electrolyte and acid-base balance. The thickness of the semi-permeable membrane used in hemodialysis is 10-20 microns, and the average pore size on the membrane is 3 nanometers, so only small molecules with a molecular weight of less than 15,000 and some medium-molecular substances are allowed to pass through, while macromolecules with a molecular weight of more than 35,000 are allowed to pass through...

AI Technical Summary

Problems solved by technology

[0003] In the existing dialysis device, the blood is inside the membrane during hemodialysis, and the filtrate is outside the membrane, that is to say, the patient’s blood needs to be pumped out of the body for filtration. However, this method has the following disadvantages, especially for long-term hemodialysis For the patients, it is inconvenient for them. During the dialysis period, the patients need to stay on the hospital bed all the time, which makes it impossible for the dialysis patients to walk during dialysis. What is more important is that the treatment cost of the dialysis patients is greatly increased and the Increased pain due to number of punctures in dialysis patients

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