Retention apparatus for an external portion of a semi-implantable hearing aid
US7386143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2003 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Feb 14, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/554
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A retention apparatus for a semi-implantable hearing aid. In one embodiment, the retention apparatus includes a first surface and a second surface. One of the first and second surfaces includes a first portion and a second portion having a rounded transition therebetween for interfacing with a patient's skin. The rounded transition of the interfacing surface of the retention apparatus functions to distribute pressure resulting from the mutual magnetic attraction between an externally located magnet and an implanted magnet to permit increased magnetic forces therebetween and maintenance of a desired separation between an external coil and implanted coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.