Compressible rotor

A rotor comprising:

• a hub configured to rotate around a central axis;
• and
• at least one rotor blade coupled to the hub and extending away from an outer surface of the hub, the at least one rotor blade comprising a medical-grade material, the at least one rotor blade configured to have a crimped state and a running state;
• wherein the medical-grade material is configured for casting or injection molding, and upon curing, the medical-grade material having a shore A hardness value of 90-100 or shore B hardness value of 35-55 as determined using DIN ISO 7619-1 and a Young's modulus of 60 Mpa-250 MPa as determined used ISO 527;
• wherein in the crimped state, the at least one rotor blade is compressed and exposed to strains of up to about 160% in a dry environment at temperatures of 20-25° C.;
• and
• wherein in the running state, the at least one rotor blade is expanded and exposed to strains of up to 10% in a wet environment at temperatures of 36-42° C.