Patent ID: 8475480
Filing Date: 2013-07-02
Classification: A61B,A61F,A61M

Abstract:
1. A multi-sleeved surgical vibrating tool suited for performing phacoemulsification through an incision and for preventing thermal injury otherwise caused by friction and heat generation from the tool, comprising: a surgical handpiece of the multi-sleeved surgical vibrating tool, the surgical handpiece being configured to perform phacoemulsification, the surgical handpiece including a hollow, vibratory needle that includes a shaft that terminates distally into a ported tip, and a driver that drives the vibratory needle to effect oscillatory vibratory motion; and a plurality of concentric sleeves each of different diameter from each other and also concentric with the shaft of the hollow, vibratory needle, the plurality of concentric sleeves including an inner sleeve and an outer sleeve, the outer sleeve being configured to guide fluid to exit the outer sleeve to prevent thermal injury to tissue otherwise caused by friction and heat generation from driving of the vibratory needle, a distal end of the inner sleeve being arranged to protrude longitudinally further than a distal end of the outer sleeve so as to be closer longitudinally to a distal end of the needle than is the distal end of the outer sleeve as the fluid exits the outer sleeve, the distal end of the outer sleeve defining a pattern of peak and valley formations that permit the fluid to exit the outer sleeve via the valley formations.