| 摘要 |
An irrigation/aspiration tip (100) for use with a handpiece (140) in ophthalmic phacoemulsification surgery is provided, having a relatively rigid cannula (112) attached to a hub (116) and an open end (118) opposite the hub. Coaxially and removably received over the cannula is a soft elastomeric or rubber sleeve (114). The sleeve forms a gap (130) between the sleeve and the cannula, the gap allowing irrigation flow. The distal end of the sleeve is closed by reduced diameter cap (115) portion. The reduced diameter of the cap seals the distal end (119) of the cannula except for an aspiration port (120). The relatively soft cap reduces the likelihood that the posterior capsule will tear during cortical clean-up and capsule polishing during ophthalmic surgery. Removing the sleeve allows the cannula to be resterilized an unlimited number of times, thereby allowing unlimited reuse of the cannula. |
