Apparatus and method for performing phacoemulsification

Abstract

An apparatus provides mechanical energy to vibrate a tip. The tip preferably formed of multiple prongs positioned approximately circumferentially (either symmetrically or asymmetrically) around an orifice of a needle. The tip is designed to emulsify a cataractous lens and to collect the resulting detritus through an aspiration aperture. An irrigating sleeve whose apertures/ports are protected from relative occlusion by untoward excursions of the phaco needle by a system of elevated stabilizing devices rising from within the inner wall of the sleeve (or from the outer wall of the phaco needle); this results in a plume or river of irrigating fluid exiting the sleeve that mitigates untoward dispersion of infusion fluid and material caught in its path including lens detritus, iris and other anatomical structures. This also provides for a more efficient process at the needle tip and therefore enhances aspirations of lens detritus in a more efficient and salutary manner as it flows to the aspiration aperture, said plume extend around the prongs. The prongs can be driven at either subsonic frequencies or ultrasonic frequencies. A stabilizer is provided to prevent the needle from interfering with the flow of the irrigating fluid during operation.

Dependencies are inferred from the claim text.