COCHLEAR IMPLANTS HAVING MRI-COMPATIBLE MAGNET APPARATUS

摘要

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.