Molded hearing aid housing
US6584207B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1999 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Jul 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/023
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of processing an impression of a portion of a user's ear canal that produces a flexible hearing aid housing which duplicates the shape of at least a portion of that impression. A female mold is created using the previously obtained ear impression. A compliant molding material is used to form the female mold. The same material is used to form a male mold in the cavity left in the female mold when the ear impression has been removed. Subsequent to curing of the male mold, it is removed from the female mold and covered with a curable, hardenable plastic such as a UV curable acrylic. Once cured, the compliant male mold is removed leaving a rigid plastic shell whose internal volume conforms in shape to the exterior shape of the ear impression. Mandrels can be inserted into the volume to provide post molding compartments for electronic components. A matrix can be inserted into the internal region or wrapped around the mandrels or respective components. A compliant elastomer can be used to fill, under vacuum, the voids in the rigid shell. When cured, the elastomeric housing can be removed from the rigid shell and the mandrels extracted therefrom. A completed hearing aid can be fo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.