| 摘要 |
An opthalmic surgical device comprises a filament 110, an elongate element 105 through which the filament can be retracted and deployed and a filament stop 140 extending across a distal opening of the elongate element preventing the filament from fully retracting back into the elongate element. The filament has a linear configuration when retracted within the elongate element and a non-linear loop configuration when deployed from the elongate element wherein ends of the loop extend back into the elongate element on either side of the filament stop. The elongated-element may be a cannula with a sharp tip. The filament may comprise a shape memory material, possibly nitinol. The filament may be may be used to mechanically push objects, as in retinal detachment repair, grasp objects, as in the removal of a dislocated intraocular lens or an intraocular foreign body and cut materials, such as intraocular fragments. |
