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 and sleeve by which an irritant is supplied to a patient's eye through an incision, the phaco-emulsification needle and sleeve comprising:a shaft disposed within the sleeve and having a proximal end, a distal end, and a first circumference, a

[ What is claimed is:] [1.] A phaco-emulsification needle and sleeve by which an irritant is supplied to a patient's eye through an incision, the phaco-emulsification needle and sleeve comprising:a shaft disposed within the sleeve and having a proximal end, a distal end, and a first circumference, a mid-region having a second circumference and a plurality of longitudinally-oriented outwardly extending projections disposed from the second 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 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, when the phaco-emulsification needle is connected to a phaco-emulsification tool, the longitudinally-oriented outwardly extending projections form fluid channels that maintain irrigant flow from the proximal end to the distal end and into the patient's eye even when the sleeve is compressed against the incision, irrigant being removed from the patient's eye through the longitudinal lumen via the opening at the tip.