An improved tip for a phacoemulsification needle having a proximal end attached to a phacoemulsification device, a distal end, a central longitudinal axis extending from the proximal end to the distal end with a bore within the needle concentric to the central axis thereof, so as to form a lumen, the...http://www.google.co.uk/patents/US4959049?utm_source=gb-gplus-sharePatent US4959049 - Tip for a phacoemulsification needle
