Abiomed Europe Gmbh

Claudia Mourran

Thorsten Siess

Gerd Spanier

Tino Andreas Boelke

Smriti Singh

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.

Compressible rotor

This invention is directed to a corrosion resistant permanent magnet, to a method for producing a corrosion resistant permanent magnet, and to an intravascular blood pump comprising the magnet. The magnet is corrosion resistant due to a composite coating comprising a metal layer, optionally a metal oxide layer, a layer formed from poly(2-chloro-p-xylylene), and a linker layer between the metal oxide layer and the poly(2-chloro-p-xylylene) layer.

Intravascular blood pump comprising corrosion resistant permanent magnet

This invention is directed to a corrosion-resistant permanent magnet, to a method for producing a corrosion-resistant permanent magnet, and to an intravascular blood pump comprising the magnet. The magnet is corrosion resistant due to a composite coating comprising a first layer structure and optionally a second layer structure on the first layer structure, each layer structure comprising an inorganic layer, a linker layer on the inorganic layer, and an organic layer formed from poly(2-chloro-p-xylylene) on the linker layer. The inorganic layers comprise aluminum and/or aluminum oxide.

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Aachen, Germany

Claudia Mourran