A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 11/00 (2006.01) A61F 2/18 (2006.01)
Patent
CA 2301129
The invention relates to a device for ventilating the middle ear by means of a ventilation tube which is made of a tissue-compatible material, preferably titanium, and with a through-channel for air communication between the cavity of the middle ear and the outside air. The ventilation tube comprises, on the one hand, a front portion (2) which is arranged to be introduced into bone tissue and is designed so that a permanent anchoring is obtained in the bone tissue and, on the other hand, a rear portion (6) which forms a passage through the skin. The ventilation tube further comprises an outer tube (1) which is made of the said tissue-compatible material and an inner tube (8) which is arranged releasably in the outer tube and whose inner bore forms the said through-channel (14) for air communication between the cavity of the middle ear and the outside air.
L'invention concerne un dispositif permettant de ventiler l'oreille moyenne à l'aide d'un tube de ventilation réalisé dans un matériau compatible aus tissus, de préférence, du titane et comprenant un canal permettant à l'air de communiquer entre la cavité de l'oreille moyenne et l'air extérieur. Le tube de ventilation comprend, d'une part, une partie frontale (2) conçue pour être introduite dans le tissu osseux et assurer un ancrage permanent dans le tissu osseux et, d'autre part, une partie postérieure (6) constituant un passage à travers la peau. Le tube de ventilation comprend également un tube externe (1) qui est réalisé dans ledit matériau compatible avec le tissu et un tube interne (8) placé de façon amovible dans le tube externe et dont l'orifice interne constitue ledit canal (14) permettant à l'air de communiquer entre la cavité de l'oreille moyenne et l'air extérieur.
Carlsson Lennart
Yung Matthew
Fetherstonhaugh & Co.
Nobel Biocare Ab
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