The working principle of hemodialysis machine isThe concentrated solution for dialysis and water for dialysis are made into qualified dialysis solution through the dialysis solution supply system, through the hemodialyzer, and the patient's blood induced by the blood guardianship alarm system to carry out the solute dispersion, osmosis and ultrafiltration effect; after the effect of the patient's blood through the After the action of the patient's blood through the blood monitoring alarm system to return to the patient's body, at the same time dialysis after the liquid as a waste liquid by the dialysis fluid supply system discharge; continuous cycle, complete the whole dialysis process.
Structural Principle
The hemodialysis machine can be roughly divided into two parts: the blood monitoring and alarm system and the dialysis fluid supply system. The blood monitoring and alarm system includes blood pump, heparin pump, arterial and venous pressure monitoring and air monitoring, etc.; the dialysate supply system includes temperature control system, liquid dispensing system, degassing system, conductivity monitoring system, ultrafiltration monitoring and blood leakage monitoring and other components.
The working principle is as follows: the concentrated liquid for dialysis and dialysis water are made into qualified dialysis liquid through the dialysis liquid supply system, and then pass through the hemodialyzer to carry out solute dispersion, osmosis and ultrafiltration with the patient's blood induced by the blood guardianship alarm system; the patient's blood returns to the patient's body after the action through the blood guardianship alarm system, and at the same time, the liquid after the dialysis as a waste liquid is discharged from the dialysis liquid supply system. Discharge;
Circulation is repeated continuously to achieve the purpose of treatment and complete the whole dialysis process. As shown in Figure 1: 1-2 represents the blood path; 3-5-7 represent the situation when the dialysate is not passed through the dialyzer in the bypass path when the dialysate is ready for dialysis after being configured or when the dialysate is incorrect; 3-6-7 represent the route of the dialysate flowing through the dialyzer when dialysis is normal; and 6 represents the situation when a single overdialysis is performed.