Mastoid antral ventilation tube

A - Human Necessities – 61 – F

Patent

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Details

A61F 11/00 (2006.01)

Patent

CA 2588391

In its broadest form, this invention enables the ventilation and drainage of the middle ear cleft via mastoid antral route, without disrupting the integrity of the eardrum. For this purpose, this tube is placed between mastoid antrum and the external ear canal after mastoidotomy (antrotomy). The tube has two cannulas, which are placed one within the other. One of these is the external cannula and it comprises a head portion made of a circular tab, a neck portion in a vertical plane to the head portion, the bent section making a right angle of 90 degrees and a longer shaft portion. Other cannula is the internal cannula and it comprises a thin, narrow and syringe-adapted-tipped canal and the canal used for the aspiration and drainage of the rest of the lumen. The external tip of the inner cannula proceeds from the external ear canal and ends pre- or retroauricularly. Through the syringe-adapted-tip of the inner cannula, serum or drugs may be administered.

L~invention concerne d~une façon générale la ventilation et le drainage de la cavité de l~oreille interne par voie antrale mastoïdienne, sans porter atteinte à l~intégrité du tympan. A cette fin, le tube de l~invention est placé entre l~antre mastoïdien et le canal de l~oreille externe après une mastoïdotomie (antrotomie). Le tube comporte deux canules, placées l~une à l~intérieur de l~autre. L~une de ces canules est une canule extérieure et comprend une partie de tête constituée d~une languette circulaire, une partie de col dans un plan vertical par rapport à la partie de tête, la partie recourbée formant un angle droit de 90 degrés et une portion de tige plus longue. L~autre canule est la canule intérieure et comprend un canal mince et étroit dont le bout est adapté à une seringue, le canal étant utilisé pour aspirer et drainer le reste de la lumière. Le bout externe de la canule intérieure s~achemine du canal de l~oreille externe jusqu~à une position pré- ou rétroauriculaire. Le bout adapté à une seringue de la canule intérieure permet l~administration d~un sérum ou de médicaments.

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