Patent ID: 7883514

Claim:
An ophthalmologic surgical instrument for inserting a tuck of iris tissue in a pinching area between clamping arms of an intraocular implant to be attached to a surface of the iris in an anterior chamber of an eye, comprising: an elongate distal end portion for insertion into the anterior chamber, said distal end portion comprising a laterally facing entry passage in an elongate distal tip section of the distal end portion, said distal tip section generally extending in an axial direction, said passage having an entry area bounded by a rim extending in a single plane for sealingly contacting the iris tissue surface, and an external crest facing away from and extending essentially parallel to said plane, for urging open the pinching area between the clamping arms; and a conduit extending from said passage for transferring a vacuum to said passage from at least a more proximal portion of the instrument; wherein, in cross-sectional view of the distal tip section perpendicular to the axial direction, the crest has a substantially smaller radius of curvature than neighboring wall portions of the distal end portion.