RETENTION MAGNET SYSTEM FOR MEDICAL DEVICE

摘要

An external portion of an auditory prosthesis includes an external magnet that interacts with an implantable magnet to hold the external portion against the skin. Magnetic force generated by the stray field of these magnets can disturb the operation of a vibrating element of the auditory prosthesis. The technologies described herein utilize additional magnets disposed within portions of the auditory prosthesis to redirect the magnetic flux, which allows the vibrating element to be disposed more closely to the magnets, reducing the overall height profile of the prosthesis.

主权项

1. An apparatus comprising:
an auditory prosthesis housing; and a magnet group disposed in the auditory prosthesis housing, the magnet group generating a group magnetic field, the magnet group having:
a first magnet that generates a first magnetic field;a second magnet that generates a second magnetic field; anda third magnet that generates a third magnetic field, wherein each of the first magnet, the second magnet, and the third magnet are substantially aligned so as to reduce a stray magnetic field of the magnet group, wherein the first magnetic field, the second magnetic field, and the third magnetic field define the group magnetic field.