Patent ID: 6126629
Filing Date: 2000-10-03
Classification: A61B,A61F

Abstract:
In a phacoemulsification needle having a proximal end attachable to a phacoemulsification handpiece and a distal end for insertion into an eye; the needle having a central longitudinal axis extending from the proximal end to the distal end;a bore within the needle concentric to the central axis thereof, forming a lumen, the lumen having sidewalls therearound, including inner and outer surfaces with an opening at the proximal end of the needle, an improved distal tip comprising:a distal end having a smoothly rounded surface closed distal end;a plurality of ports positioned through the closed distal end communicating between the lumen and exteriorly to the needle;wherein there are five (5) ports extending through the closed distal end; andwherein the phacoemulsification needle is made of metal and the rounded surface closed distal end has approximally 0.00119 square inches of metal material at the distal tip to aid in the creation of cavitation at said tip.