Speech valve

The valve 10 comprises a generally cylindrical body 12, 14, 16 and a closure member 62 which is slidably movable within the body between a closed position and an open position. The valve body and the closure member 62 are formed of a rigid, smooth material which is resistant to the growth of biofilm, such as a ceramic. A particular suitable ceramic is partially stabilised zirconia. The valve body is provided with an outer sleeve 76 which is provided with radially outwardly extending annular flanges 82, 86, which are used to retain the speech valve in a fistula between the oesophagus and the trachea. The member 62 may be biased to the closed position by opposed magnets 72, 74 or by a spring. The sliding movement of the member 62 within guidance member 16 may lead to cleaning of the guidance surfaces.

Attached files:


Patents:
GB 2,443,164

Inventor(s): FAGAN MICHAEL JOHN [GB]; ELL STEPHEN ROBERT [GB]; PAGET TIMOTHY A [GB]; DOBSON CATHERINE A [GB]; MAHMOUD ZAHRA N [GB]

Type of Offer: Sale



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