Intravascular blood pump comprising corrosion resistant permanent magnet
AssigneeAbiomed Europe GmbH
InventorsThorsten Siess, Claudia Mourran
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Abstract
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.
Claims40
A corrosion resistant permanent magnet comprising:
- a magnet body;
- and
- a composite coating provided on and covering surfaces of the magnet body, the composite coating comprising
- a metal layer on the magnet body,
- optionally a metal oxide layer on the metal layer at the surface facing away from the magnet body,
- a linker layer on the metal layer or the metal oxide layer, and
- a layer formed from poly(2-chloro-p-xylylene) on the linker layer.
A method for producing a corrosion resistant permanent magnet, the method comprising:
- providing a non-magnetized magnet body;
- forming a metal layer on surfaces of the non-magnetized magnet body;
- forming a linker layer on the metal layer or on a metal oxide layer formed on the metal layer;
- forming a layer of poly(2-chloro-p-xylylene) on the linker layer;
- and
- magnetizing the non-magnetized magnet body.
An intravascular blood pump comprising an electric motor, wherein the electric motor comprises a permanent magnet comprising:
- a magnet body;
- and
- a composite coating provided on and covering surfaces of the magnet body, the composite coating comprising
- a metal layer on the magnet body,
- a linker layer on the metal layer, and
- a layer formed from poly(2-chloro-p-xylylene) on the linker layer.
Dependencies are inferred from the claim text.