ELECTROMAGNETIC TRANSDUCER WITH REDUCED SENSITIVITY TO EXTERNAL MAGNETIC FIELDS, AND METHOD OF IMPROVING HEARING OR SENSING VIBRATIONS USING SUCH A TRANSDUCER

European Patent Office Patent

PATENT NO 1637009
APP PUB NO EP-1637009-A2
SERIAL NO

04744223

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Abstract

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An electro-magnetic driver transducer (600, 700) free of torque in the presence of an external magnetic field, of any direction and orientation (such as in a Magnetic Resonance Imaging environment). The transducer includes a housing (101). At least one coil (102, 103) is associated with the housing. A spherical magnet (601) together with a keeper (603) that includes magnetically soft material, or a plurality of spherical magnets (704, 705) are placed within the housing and are aligned along a common axis. The magnets are free to move along this axis, wherein vibration of the magnets causes vibration of the housing. The transducer may be, for example, fixed to an ossicle.

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Patent Owner(s)

Patent OwnerAddress
MED-EL ELEKTROMEDIZINISCHE GERATE GMBHAT6020 INNSBRUCK

International Classification(s)

Inventor(s)

Inventor Name Address
ZIMMERLING MARTIN 6082 PATSCH

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