Blood pump with micromotor

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United States of America Patent

PATENT NO 10808704
APP PUB NO 20100041939A1
SERIAL NO

12532816

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Abstract

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The invention relates to a micromotor (10), the stator of which contains a back iron jacket (18). Said back iron jacket consists of a continuous unslotted sleeve consisting of a metal alloy that contains ferritic iron as the main constituent, up to 30% chromium and preferably aluminium and yttrium oxide. Electric conductivity is reduced by the oxidation of the aluminium. The yttrium oxide performs the same function. The reduced electric conductivity suppresses eddy currents to a great extent. The back iron jacket (18) has a high magnetic conductivity with a small wall thickness, thus increasing the electrical output for a motor with a small diameter.

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Patent Owner(s)

Patent OwnerAddress
ABIOMED EUROPE GMBHNEUENHOFER WEG 3 52074 AACHEN GERMANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kirchhoff, Frank Ubach-Palenberg, DE 64 1075
Siess, Thorsten Wuerselen, DE 191 10213

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