Voice prosthesis device
US4614516A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1984 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Jan 20, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/203
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A low pressure prosthesis device includes a housing having a proximal end with one or more retainers extending outwardly from the proximal end, a distal end and a port operatively cooperating with a tracheostoma in the neck of a patient. The housing further includes a one-way valve structure comprising a valve seat positioned in the housing between the port and the distal end and a valve membrane hingedly mounted within the housing to cooperate with the valve seat to provide the one-way valve structure. A second retainer in the form of an annular collar extends outwardly from the housing and is positioned to abut against the esophagus tissue when the device has been positioned within a fistula connecting the esophagus to the tracheostoma. The valve membrane is movable from the closed to the opened position when air passes through the port from the tracheostoma to the esophagus to produce alaryngeal speech and sounds in the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.