초록 ▼

A phaco-emulsification needle is provided for use with a plastic or elastomeric sleeve, the needle having a mid-region portion defining a plurality of outwardly extending projections forming longitudinally-oriented grooves that provide adequate irrigant flow rates to the anterior chamber of the eye,

A phaco-emulsification needle is provided for use with a plastic or elastomeric sleeve, the needle having a mid-region portion defining a plurality of outwardly extending projections forming longitudinally-oriented grooves that provide adequate irrigant flow rates to the anterior chamber of the eye, even when the entry wound compresses the sleeve against the outer surface of the needle, thereby reducing the risk of collapse of the anterior chamber due to inadequate irrigant flow and reducing the risk of excessive heat transmission to the entry wound.

대표청구항 ▼

[ What is claimed is:] [1.] A phaco-emulsification needle for use with a phaco-emulsification tool, the phaco-emulsification needle comprising:a shaft having a proximal end, a distal end, a mid-region, a first circumference, and a longitudinal lumen extending through the shaft from the proximal end

[ What is claimed is:] [1.] A phaco-emulsification needle for use with a phaco-emulsification tool, the phaco-emulsification needle comprising:a shaft having a proximal end, a distal end, a mid-region, a first circumference, and a longitudinal lumen extending through the shaft from the proximal end to the distal end;a hub disposed at the proximal end of the shaft having means for engaging a phaco-emulsification tool, the hub having an outer circumference larger than the first circumference, the longitudinal lumen extending through the hub; anda tip disposed at the distal end of the shaft, the tip having an opening communicating with longitudinal lumen,wherein the mid-region of the shaft is a hollow tube having a solid wall free of lateral openings from the hub to the tip and the mid-region has a second circumference and a plurality of longitudinally-oriented outwardly extending projections disposed from the second circumference, the longitudinally-oriented outwardly extending projections forming fluid channels that communicate with the longitudinal lumen via the tip when the phaco-emulsification needle is connected to a phaco-emulsification tool.