Apparatus for performing phaco-emulsification

摘要

An apparatus provides mechanical energy to vibrate a needle. An irrigating sleeve is disposed around the needle and includes one or more irrigation ports through which irrigation liquid is ejected during emulsification. To prevent the needle from occluding the irrigation ports with its deflections, one or more bumpers are provided between the sleeve and the needle.

主权项

1. An apparatus for performing eye surgery comprising:
a vibration mechanism; a handle connected to a source of irrigation fluid and including a needle having a needle tip and being coupled to said vibration mechanism and adapted to be vibrated by said vibration mechanism, said handle further including an irrigation sleeve disposed around said needle and being configured for providing a path for said irrigation fluid, said sleeve having ports for ejecting said irrigation fluid and an inner surface having a generally cylindrical shape and extending in an axial direction parallel to said needle and a circumferential direction; and a plurality of bumpers forming an array of a first set of bumpers arranged in a first ring and a second set of bumpers arranged in a second ring axially spaced with respect to said first ring, said plurality of bumpers being formed integrally on said inner surface of the sleeve, said bumpers being arranged and constructed to stabilize said needle and prevent said needle from temporarily blocking said ports during said vibration, said bumpers being sized to minimize interference with said irrigation fluid.