公开(公告)号：US20240198083A1

公开(公告)日：2024-06-20

申请号：US18519584

申请日：2023-11-27

申请人： Abiomed Europe GmbH

发明人： Tino Andreas BOELKE ,  Gerd Bruno Spanier ,  Claudia Mourran ,  Smriti Singh

IPC分类号： A61M60/808 ,  B29C45/00 ,  F04D29/02 ,  F04D29/18 ,  B29K67/00 ,  B29K83/00 ,  B29L31/08

CPC分类号： A61M60/808 ,  B29C45/0001 ,  F04D29/026 ,  F04D29/181 ,  B29K2067/00 ,  B29K2083/00 ,  B29K2995/0088 ,  B29L2031/08

摘要： A rotor for a pump, such as a blood pump, may include a hub configured to rotate around a central axis, and at least one rotor blade coupled to and extending away from an outer surface of the hub, the rotor blade comprising a medical-grade polyurethane, the rotor blade configured to have a crimped state and a running state. The medical-grade polyurethane may be configured for casting or injection molding, and upon curing, the medical-grade material advantageously has a shore A hardness of 90-100, or a shore B hardness of 35-55, and a Young's modulus of 60 MPa-250 MPa. When crimped, the rotor blades are compressed and exposed to strains of up to about 160% in a dry environment at temperatures of 20-25° C. When running, the rotor blades are expanded and exposed to strains of up to 10% in a wet environment at temperatures of 36-38° C.