The semi-permeable membrane used in hemodialysis has a thickness of 10-20 microns, and the pore diameter on the membrane is 3 nanometers on average. Therefore, only small molecules and a part of molecular substances having a molecular weight of 15,000 or less are allowed to pass, and macromolecules having a molecular weight of more than 35,000 are allowed. The substance cannot pass. Therefore, proteins, pyrogens, viruses, bacteria, and blood cells are all impenetrable; most of the components of urine are water. To replace kidneys with artificial kidneys, a large amount of water must be discharged from the blood. Artificial kidneys only It can use osmotic pressure and ultrafiltration pressure to achieve the purpose of removing excess water.
The artificial kidneys used today, that is, hospital hemodialysis pure water equipment, have these functions, thereby regulating the quality and quantity of blood to be close to physiological state.
1. The water quality of the produced water meets the American AAMI US/ASAIO hemodialysis water standard.
2. In line with national YY0572-2005 hemodialysis water standards.
3. Endotoxin and bacterial removal rate ≥99%.
4. The dissolved salt removal rate is ≥97%.
5. The water recovery rate is over 70%.
6. The system emptying rate is ≥99%, and there is no dead space.