Hemodialysis device for kidney internal medicine

Abstract

The invention discloses a hemodialysis device for kidney internal medicine. The hemodialysis device comprises a shell, a blood inlet and outlet device is connected to the shell, a wire rack is installed outside the shell, the blood inlet and outlet device includes an arterial needle and a venous needle, the arterial needle and the venous needle are connected with a blood outlet vessel and a bloodreturn vessel respectively, the blood outlet vessel is connected with a blood pump, the blood pump is connected with a dialysis device through an intermediate tube, the dialysis device is installed inthe shell, an anticoagulant injector and a one-way valve are respectively installed at the top side and right end of the intermediate tube, and a blood insulation device is installed in the blood return vessel. According to the hemodialysis device, the hemodialysis preparation time is short, medical hollow fibers have good quality and high filtration efficiency for blood of a patient and can be washed through a cleaning tube, long-term high-efficiency hemodialysis can be effectively performed, the blood in the blood return vessel is similar to the blood temperature in the body of the patientafter insulation, the blood flow is smooth, and the patient is more comfortable.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a hemodialysis device used in nephrology. Background technique [0002] As a method of treating renal failure with a hemodialysis device used in nephrology, it is widely used to form an extracorporeal blood circulation circuit using a hemodialysis device. Based on the principle of simultaneous diffusion or filtration, the balance of the electrolyte balance is promoted by removing waste products from the blood. Hemodialysis devices are generally configured to remove waste products from the blood by means of a hemodialysis filter which is equipped with a membrane located in the housing in order to pass the waste through the membrane located between the blood chamber and the dialysate chamber. In general there are two types of membranes, flat and hollow fiber. The most widely used is the hollow fiber type, which consists of a bundle of hollow fibers mounted in a cylindrica...

AI Technical Summary

Problems solved by technology

[0007] (1) Before the current hemodialysis device performs dialysis on the patient's blood, the needle must be inserted into the patient's blood vessel, and then a section of medical tape will be cut to stick the blood vessel on the patient's arm. lengthen

[0008] (2) Most of the current hemodialysis devices use hollow fibers to filter impurities and excess water in the blood, but most of the hollow fibers are circular channels inside, which makes the blood in the hollow fibers close to the inner wall of the fibers easy to be filtered , and the blood closer to the fiber axis is more difficult to filter, the contact area between blood and dialysate is smaller, so the quality of blood filtration is not ideal, and the filtration speed is also slow, and the general hollow fiber is filtered in a straight line. Short, poor quality blood filtration

[0009] (3) After the existing hemodialysis device has been used for a period of time, impurities such as coagulation and protein will remain in the hollow fiber, which will affect the quality and speed of hemodialysis. Either prolong the hemodialysis time, or replace the hollow fiber, which increases the cost , it is more troublesome to replace the hollow fiber, wasting maintenance time

[0010] (4) Most of the existing hemodialysis devices rely on anticoagulant to make the blood not easy to coagulate, but the path of blood circulation is long. When the anticoagulant is not enough, the blood is prone to coagulation. In the return blood vessel or hollow fiber, it will affect the hemodialysis efficiency. If the coagulated blood flows into the human body, it will cause harm to the human body. Heat is easily lost during the blood flow process. If the difference is large, it will cause discomfort to the patient, and it will seriously cause adverse reactions to the patient.

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