Voice prosthesis

Details Voice prosthesis Voice prosthesis

2007-01-23

2007-01-23

McDermott, Corrine (Department: 3738)

Prosthesis (i.e., artificial body members), parts thereof, or ai

Larynx, trachea, tracheobronchial prosthesis or combination...

Reexamination Certificate

active

09171889

ABSTRACT:
A voice prosthesis to be mounted in a fistula between trachea and esophagus comprises a spool-shaped element with a through passage and a valve mechanism controlling the connection through said passage and having sealing surfaces which can be pressed against each other, means being provided to produce a magnet force acting between the sealing surfaces to keep said surfaces pressed against each other in the closed position of the valve mechanism.

REFERENCES:
patent: 3974854 (1976-08-01), Kurpanek
patent: 4979955 (1990-12-01), Smith
patent: 5064433 (1991-11-01), Blom
patent: 5135538 (1992-08-01), Pawlak
patent: 5314470 (1994-05-01), Persson
patent: 5391205 (1995-02-01), Knight
patent: 5632775 (1997-05-01), Suding
patent: 5693097 (1997-12-01), Laguette
patent: 5814100 (1998-09-01), Carpentier
patent: 5957978 (1999-09-01), Blom
patent: 9311820 (1993-06-01), None

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