Hemodialysis device with built-in dialysis tube

Abstract

The invention discloses a hemodialysis device with a built-in dialysis tube, which relates to the field of medical equipment. The hemodialysis device with a built-in dialysis tube provided by the present invention comprises a dialysis tube and a connecting part, and the connecting part is connected to the dialysis tube; the dialysis tube includes a dialysis outer tube, a dialysis inner tube and a dialysis membrane, and the dialysis outer tube is sheathed on the outer periphery of the dialysis inner tube and connected with the dialysis tube. There is a gap between the dialysis inner tubes, and the dialysis membrane covers the outer wall of the dialysis inner tube; the dialysis inner tube has a U-shaped or V-shaped structure, and the openings are respectively the liquid inlet and the liquid outlet; the liquid inlet and the liquid outlet wear through the connecting part; the connecting part is provided with a regulating valve to open or close the liquid inlet and / or liquid outlet and adjust the flow rate. The dialysis tube part of the dialysis device is small in size, and can be directly placed in the human artery for hemodialysis, without taking blood out of the body and then going through the machine for hemodialysis, so it has no effect on human blood pressure, and is more economical, safe and less traumatic than extracorporeal hemodialysis ; It can be indwelling in the blood vessel for multiple use, continuously performing hemodialysis for the patient.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a hemodialysis device with a built-in dialysis tube. Background technique [0002] Hemodialysis is to use the principle that the solute flows from the side with high concentration to the side with low concentration, and introduce the two solutions of blood and dialysate into the dialyzer with hollow fiber semi-permeable membrane at the same time, so that the blood is located in the hollow fiber semi-permeable membrane. The dialysate is located on the other side of the hollow fiber semi-permeable membrane, so that the solutions on both sides of the membrane can remove medium and small molecule toxins in the human blood through diffusion and osmosis. At the same time, the electrolytes in the blood can also pass through Osmosis reaches balance, so as to achieve the purpose of blood purification. [0003] Hemodialysis is also a common method for the treatment of edematous diseases, ...

AI Technical Summary

Problems solved by technology

The dialysis process has the following problems: (1) The blood is separated from the body, which may cause a sharp decrease or increase in the blood volume of the patient, resulting in unstable blood pressure and even death; (2) The extracorporeal dialysis process usually only lasts for several hours , unable to continuously, long-term, and stably perform hemodialysis for patients; (3) The extracorporeal dialysis equipment is huge and difficult to transport, and the patient needs to be transported to the dialysis room, or the huge extracorporeal dialysis machine is transported to the patient's bedside, which increases the difficulty of treatment ; (4) The instrument is expensive, reaching hundreds of thousands or even millions

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