Semi-implantable middle ear hearing device
Patent 5558618 Issued on September 24, 1996. Estimated Expiration Date: 
January 23, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 23, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3870832 Partially implantable hearing aid device Patent #: 5015224 InventorApplicationNo. 376750 filed on 01/23/1995US Classes:600/25SURGICALLY IMPLANTED VIBRATORY HEARING AIDExaminersPrimary: Sykes, Angela D.Assistant: Lacyk, John P. Attorney, Agent or FirmInternational ClassH04R 025/00AbstractAn improved partially implantable hearing device has a high coercivity permanent target magnet mounted to the ossicular chain by METABOND adhesive and being driven by an air core driving coil optimally implanted in a contactless manner at a spacing of approximately 1 mm. therefrom. The drive coil responds to auditory vibrations sensed by an externally concealed unit which converts these signals to an electrical signal transmitted to an externally located antenna which transmits same to an internally mounted antenna electronically connected to the air core electromagnetic driving coil. | |
