PHACOEMULSIFICATION CANNULA WITH IMPROVED PURCHASE

摘要

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.