| 摘要 |
A magnetic transducer (100) for improving hearing in a hearing impaired person comprises a magnet assembly (12) and a coil (14) secured inside a housing (10) which is fixed to an ossicle of a middle ear (JJ). The coil (14) is more rigidly secured to the housing (10) than the magnet (12). The magnet assembly (12) and coil (14) are configured such that conducting alternating electrical current through the coil (14) causes magnetic fields of the coil (14) and magnet assembly (12) to cause the magnet assembly (12) and coil (14) to vibrate relative to one another. Because the coil (14) is mole rigidly secured to the housiog (10) than the magnet assembly (12), the vibrations of the coil (14) cause the housing (10) to vibrate. The vibrations are conducted to the oval window of the ear via the ossicles. In alternate embodiments, the transducer (100) is secured to ossicular protheses that are secured within the middle ear (JJ).
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