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US 12,752,114 B2Granted
Cochlear implants having MRI-compatible magnet apparatus
AssigneeAdvanced Bionics AG
InventorsJames George Elcoate Smith, Sung Jin Lee
Life of this patent
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Abstract
A magnet apparatus including a case defining a central axis, a frame, defining a receptacle, within the case and rotatable about the central axis of the case, a magnet holder within the receptacle and including a plurality of tubes that together define an integral structure, and a plurality of elongate diametrically magnetized magnets that are respectively located in the plurality of tubes, the magnets defining a longitudinal axis and a N-S direction and being rotatable about the longitudinal axis relative to the tubes.
Claims21
A magnet apparatus, comprising:
- a case defining a central axis having a central axis direction;
- a frame, defining a receptacle that extends in the central axis direction completely through the frame, within the case and rotatable about the central axis of the case;
- a magnet holder within the receptacle and including a plurality of parallel tubes that together define an integral structure;
- and
- a plurality of elongate diametrically magnetized magnets within the case that are respectively located in the plurality of tubes, each of the magnets defining a longitudinal axis and a N-S direction and being rotatable about the longitudinal axis relative to the tubes.
2 more elements
A magnet apparatus comprising:
- a case defining a central axis and an inner surface;
- a frame, defining a receptacle, within the case and rotatable about the central axis of the case;
- a magnet holder within the receptacle and including a plurality of tubes that together define an integral structure;
- and
- a plurality of elongate diametrically magnetized magnets that are respectively located in the plurality of tubes, the magnets defining a longitudinal axis and a N-S direction and being rotatable about the longitudinal axis relative to the tubes;
- wherein
- at least some of the tubes are in contact with the inner surface of the case when the magnet holder is in a relaxed state;
- and
- at least some of the tubes are not in contact with the inner surface of the case when the magnet holder is in the relaxed state.
6 more elements
Dependencies are inferred from the claim text.