Electrolarynx
US9020155B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Sep 3, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/206
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrolarynx includes a motor having a locating diaphragm, a bobbin, and a magnetic assembly. The bobbin includes a striker and coil wires wound about a coil cylinder of an electromagnet. The locating diaphragm maintains the position of the bobbin along the longitudinal axis of the housing. The magnetic assembly includes a magnet and a non-magnetic guide disc that sandwiches the magnet to the housing. The magnet and the coil wires drive the striker and, in turn, a contact diaphragm in the cap of the electrolarynx that makes contact with a patient's throat to produce vibrations similar to those produced by the larynx. To avoid “gravitational wear” of the coil wires against a magnetic cup used to center the coil wires, the walls of the cup are made thinner and the magnetic cup may be replaced with a non-magnetic cup or the magnetic cup is removed altogether.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.