The invention relates to a bionic glomerular multistage sorting membrane and application thereof in continuous
blood purification (CBP), and belongs to the technical field of
biomedical engineering and
blood purification. According to the membrane, the
filtration mechanism of natural glomerulus is simulated, gradient aperture design and charge selective modification are adopted, efficient sorting is achieved, small molecules (such as
urea and
creatinine), middle molecules (such as beta2-microglobulin and
inflammatory factors) and macromolecular toxins (such as
protein binding toxins) can be removed at the same time, and meanwhile abnormal loss of
albumin is greatly reduced. A traditional
blood purification membrane is generally poor in
treatment effect on solutes with different sizes and properties due to lack of a multi-stage sorting function, and especially has significant insufficiency in the aspect of
albumin retention, so that the risks of
hypoproteinemia and
malnutrition of patients are increased. The bionic sorting membrane is closer to natural glomerulus in
structure and function, the sorting and selective barrier characteristics are optimized, the bionic sorting membrane is particularly suitable for advanced blood purification systems such as CRRT and high interception
hemodialysis (HCO-HD), an innovative
extracorporeal circulation treatment solution is provided for critical patients, and the application prospect is wide. And the safety and the effect of overall treatment are improved.