Medical hemodialysis filter

Abstract

A medical filtering machine for the hemodialysis is composed of main body with console panel, blood loop consisting artery loop and vein loop, liquid-supplementing loop, water channel system and operation-control system. Said water channel system consists of reverse osmosis jointer, heat exchanger, heater, gear pump, deaerating unit, two concentrated liquid pumps, mixer, ion concentration monitor, volume balance and ultrafiltration unit, and endotoxin filter.

Description

technical field [0001] The invention relates to a medical device, especially a medical hemodialysis filter for removing exogenous and endogenous poisons, wastes or other harmful substances in the patient's body. Background technique [0002] Hemodialysis (HD) and hemofiltration (HF) are the most widely used treatments in the field of blood purification. Both treatment modes require hemodialyzers or hemofilters to remove toxins in the end. They have no essential difference in structure, and they are all composed of a large number of hollow fiber tubes. These hollow fiber tubes are a kind of A semi-permeable membrane with high permeability, small and medium molecular substances in the blood can pass through freely, while larger molecules in the blood (such as most proteins, plasma components, blood cells, etc.) cannot pass through. Generally, the semi-permeable membrane on the hemofilter can pass small and medium molecular substances, while the hemodialyzer can only pass smal...

AI Technical Summary

Problems solved by technology

[0006] 1. Without the function of dialysis filtration treatment (HDF) at the same time, only dialysis treatment or filtration treatment can be performed alone;

[0007] 2. There is no on-line (on_line) replacement fluid generation function, and it can only be manually configured with physiological saline or dialysis powder, and the replacement fluid volume is small and easily polluted;

[0008] 3. There is no preheating device for the reverse osmosis water, resulting in a large temperature difference between the reverse osmosis water entering and leaving the heating device, a large fluctuation range of the dialysate temperature, and a large power consumption of the whole machine;

[0009] 4. There is no capacity ultrafiltration method, and the dehydration error is relatively large;

[0010] 5. There is no automatic liquid dispensing device, the degree of automation is not high, the ion concentration of the dialysate or replacement liquid dispensed is inaccurate, and the treatment process is unsafe;

[0011] 6. There is no function of selecting a variety of dialysate formulas, and concentrates with various ratios of liquids cannot be used;

[0013] 1. Without the function of dialysis filtration treatment (HDF) at the same time, only dialysis treatment or filtration treatment can be performed alone;

[0014] 2. There is no on-line (on_line) replacement fluid generation function, and it can only be manually configured with physiological saline or dialysis powder, and the replacement fluid volume is small and easily polluted;

[0015] 3. The machine is expensive, resulting in high cost of hemodialysis or filtration treatment, increasing the economic burden on hospitals and patients;

[0016] 4. There is no special perfusion treatment function, which is inconvenient and wastes dialysate;

[0017] 5. Complex structure, inconvenient operation, prone to failure and difficult maintenance;

[0018] 6. The operation control display panel and LCD display are displayed in English, which requires a high level of English for the operator, which is not easy to operate and respond to the alarm in a timely manner

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