Mahmoud, Zahra N.,Dobson, Catherine A.,Fagan, Michael J.,Paget, Timothy A.,Ell, Stephen R.
申请号：
AU2007310601
公开号：
AU2007310601B2
申请日:
2007.10.18
申请国别(地区):
AU
年份:
2013
代理人:
摘要：
A speech valve (10) comprises a generally cylindrical body (12, 14, 16) and a closure member(62) which is slidably movable within the body (12, 14, 16) between a closed positionand an open position. The valve body and the closure member (62) are formed of arigid, smooth material which is resistant to the growth of biofilm, such as a ceramic.A particular suitable ceramic is partially stabilised zirconia. The valve bodyis provided with an outer sleeve (76) which is provided with radially outwardlyextending annular flanges (82, 86), which are used to retain the speech valvein a fistula between the oesophagus and the trachea.
