Back to results
US 10,646,712 B2Granted
Cochlear implants having MRI-compatible magnet apparatus
AssigneeAdvanced Bionics AG
InventorsJames George Elcoate Smith, Sung Jin Lee, Charles C. Finley
Life of this patent
Estimating the term…
Abstract
A cochlear implant including a cochlear lead, an antenna, a stimulation processor, and an implant magnet apparatus, associated with the antenna, including a case defining a central axis, a first disk-shaped magnet member, located within the case and rotatable relative to the case about the central axis of the case, including a magnetic north portion (“N-portion”), a magnetic south portion (“S-portion”) and an amagnetic portion (“AM-portion”), and a second disk-shaped magnet member, located within the case and rotatable relative to the case about the central axis of the case, including a N-portion, a S-portion and an AM-portion.
Claims21
A cochlear implant, comprising:
- a flexible housing;
- a cochlear lead including a plurality of electrodes and extending outward from the flexible housing;
- an antenna located within the flexible housing and configured to receive stimulation data;
- a stimulation processor located within the flexible housing, operably connected to the antenna and to the cochlear lead and configured to covert the stimulation data into stimulation signals for cochlear stimulation through the electrodes;
- and
- a magnet apparatus located within the flexible housing adjacent to the antenna and including:
- a case defining a central axis,
- a first disk-shaped magnet member located within the case, rotatable relative to the case about the central axis of the case, including a magnetic north portion (“N-portion”), a magnetic south portion (“S-portion”) and an amagnetic portion (“AM-portion”) that are arranged relative to one another such that a plane perpendicular to the central axis passes through the N-portion, the S-portion and the AM-portion, and
- a second disk-shaped magnet member located within the case, rotatable relative to the case about the central axis of the case, and including a N-portion, a S-portion and an AM-portion.
6 more elements
A cochlear implant, comprising:
- a cochlear lead including a plurality of electrodes;
- an antenna;
- a stimulation processor operably connected to the antenna and to the cochlear lead;
- and
- a magnet apparatus, associated with the antenna, including:
- a case defining a central axis,
- a first disk-shaped magnet member located within the case, rotatable relative to the case about the central axis of the case, and including a magnetic north portion (“N-portion”), a magnetic south portion (“S-portion”) and an amagnetic portion (“AM-portion”), wherein the first magnet member defines a diameter, the AM-portion defines a half-disk located on one side of the diameter, and the N-portion and the S-portion together define a half-disk located on the other side of the diameter, and
- a second disk-shaped magnet member located within the case, rotatable relative to the case about the central axis of the case, and including a N-portion, a S-portion and an AM-portion, wherein the second magnet member defines a diameter, the AM-portion defines a half-disk located on one side of the diameter, and the N-portion and the S-portion together define a half-disk located on the other side of the diameter.
5 more elements
A cochlear implant, comprising:
- a flexible housing;
- a cochlear lead including a plurality of electrodes and extending outward from the flexible housing;
- an antenna located within the flexible housing and configured to receive stimulation data;
- a stimulation processor located within the flexible housing, operably connected to the antenna and to the cochlear lead and configured to covert the stimulation data into stimulation signals for cochlear stimulation through the electrodes;
- and
- a magnet apparatus located within the flexible housing adjacent to the antenna and including:
- a case defining a central axis,
- a first disk-shaped magnet member located within the case, rotatable relative to the case about the central axis of the case, including a magnetic north portion (“N-portion”), a magnetic south portion (“S-portion”) and an amagnetic portion (“AM-portion”), the AM-portion and at least one of the N-portion and the S-portion together defining a magnet member outer perimeter that extends around the central axis, and
- a second disk-shaped magnet member located within the case, rotatable relative to the case about the central axis of the case, and including a N-portion, a S-portion and an AM-portion.
6 more elements
Dependencies are inferred from the claim text.