Phacoemulsification cannula with improved purchase

A - Human Necessities – 61 – F

Patent

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Details

A61F 9/007 (2006.01)

Patent

CA 2668646

A phacoemulsification cannula (10) includes a hub (12) for engagement with an ophthalmic surgical instrument. An elongated needle (14) having a proximal end (16) is attached to the hub (12). The cannula (10) has an aspiration lumen (20) spanning a majority of a length of a needle (14) from the proximal end towards a distal end (18). A venturi lumen (22) is formed in the needle adjacent the distal end. The venturi lumen (22) is in communication with the aspiration lumen (20) so that fluid and tissue may be aspirated through the venturi lumen (22) and the aspiration lumen (20).

L'invention concerne une canule de phacoémulsification (10) comprenant un racord (12) destiné à venir en prise avec un instrument chirurgical ophtalmique. Une aiguille allongée (14) présentant une extrémité distale (16) est fixée au raccord (12). La canule (10) présente une lumière d'aspiration (20) s'étendant sur une majeure partie d'une longueur d'une aiguille (14) de l'extrémité proximale vers une extrémité distale (18). Une lumière de Venturi (22) est formée dans l'aiguille de manière adjacente à l'extrémité distale. La lumière de Venturi (22) est en communication avec la lumière d'aspiration (20) de sorte qu'un liquide et un tissu peuvent être aspirés à travers la lumière de Venturi (22) et la lumière d'aspiration (20).

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