Curved multi-purpose phacoemulsification needle
View Patent ↗A multipurpose phacoemulsification needle includes a needle body having a lumen therethrough for aspiration of fluids and tissue. A needle body includes a proximal end adapted for attachment to a phacoemulsification handpiece, a curved portion and a tip portion disposed at a distal end of the needle body. The tip portion includes a truncated hemisphere having a flat surface thereon and a port disposed in the flat surface. The truncated hemisphere includes a rounded surface of sufficient area to enable capsule polishing and when driven in an ultrasonic mode, the needle is also suitable for irrigation and aspiration as well as phacoemulsification of lens tissue.
1. A multi-purpose phacoemulsification needle comprising:
a needle body having a lumen therethrough for aspiration of fluid and tissue;
a needle body proximal end adapted for attachment to a phacoemulsification handpiece;
a needle body distal end having a tip portion, said tip portion comprising:
a truncated hemisphere having a flat surface thereon; and
a port disposed in said flat surface, said port communicating with the needle body lumen; and
a needle body curved portion disposed adjacent the tip portion and having a curvature in a plane not including said flat surface;
said plane is perpendicular to said flat surface;
said flat surface faces inwardly from an arc established by the needle body curved portion.
2. A multi-purpose phacoemulsification needle comprising:
a needle body having a lumen therethrough for aspiration of fluid and tissue;
a needle body proximal end adapted for attachment to a phacoemulsification handpiece;
a needle body distal end having a tip portion, said tip portion comprising:
a truncated hemisphere having a flat surface thereon; and
a port disposed in said flat surface, said port communicating with the needle body lumen; and
a needle body curved portion disposed adjacent the tip portion and having a curvature in a plane not including said flat surface;
said plane is perpendicular to said flat surface;
said flat surface faces outwardly from an arc established by the needle body curved portion.
3. A multi-purpose phacoemulsification needle comprising:
a needle body having a lumen therethrough for aspiration of fluid and tissue;
a needle body proximate end adapted for attachment to a phacoemulsification handpiece;
a needle body distal end having a tip portion, said tip portion comprising;
a convex surface of revolution about a centerline of said tip portion defined by an arc extending from a circumference of said needle body to the tip portion centerline;
a relatively flat surface formed in the surface of revolution; and
a port disposed in the flat surface, said port communicating with the needle body lumen; and
a needle body curved portion disposed adjacent the tip portion and having a curvature in a plane not including said flat surface;
said plane is perpendicular to said flat surface;
said flat surface faces inwardly from an arc established by the needle body curved portion.
4. A multi-purpose phacoemulsification needle comprising:
a needle body having a lumen therethrough for aspiration of fluid and tissue;
a needle body proximate end adapted for attachment to a phacoemulsification handpiece;
a needle body distal end having a tip portion, said tip portion comprising;
a convex surface of revolution about a centerline of said tip portion defined by an arc extending from a circumference of said needle body to the tip portion centerline;
a relatively flat surface formed in the surface of revolution; and
a port disposed in the flat surface, said port communicating with the needle body lumen; and
a needle body curved portion disposed adjacent the tip portion and having a curvature in a plane not including said flat surface;
said plane is perpendicular to said flat surface;
said flat surface faces outwardly from an arc established by the needle body curved portion.
5. A multi-purpose phacoemulsification needle comprising:
a needle body having a lumen therethrough for aspiration of fluid and tissue;
a needle body proximal adapted for attachment to a phacoemulsification handpiece; and
a needle body distal end having a tip portion, said tip portion comprising:
a rounded portion having sufficient surface area for polishing an eye lens capsule; and
a port disposed in said tip portion and communicating with the needle body lumen; and
a needle body curved portion disposed adjacent the tip portion and having a curvature in a plane not including said flat surface;
said plane is perpendicular to said flat surface;
said flat surface faces inwardly from an arc established by the needle body curved portion.
6. A multi-purpose phacoemulsification needle comprising:
a needle body having a lumen therethrough for aspiration of fluid and tissue;
a needle body proximal adapted for attachment to a phacoemulsification handpiece; and
a needle body distal end having a tip portion, said tip portion comprising:
a rounded portion having sufficient surface area for polishing an eye lens capsule; and
a port disposed in said tip portion and communicating with the needle body lumen; and
a needle body curved portion disposed adjacent the tip portion and having a curvature in a plane not including said flat surface;
said plane is perpendicular to said flat surface;
said flat surface faces outwardly from an arc established by the needle body curved portion.