Patent ID: 8021423

Claim:
An intraocular lens insertion tool including a tool body having a generally tubular shape for accommodating an intraocular lens, and a plunging member inserted into the tool body from a rear in an axial direction and moved forward for inserting into an eye the intraocular lens such that the intraocular lens undergoes compact deformation during forward displacement in the axial direction by the plunging member and is pushed out, wherein an insertion tube disposed at a distal end section of the tool body and adapted for insertion into the eye, viewed perpendicular to a direction of extension thereof, has across an entire length from a proximal end opening, which is adjacent to and in contact with a stage arranged on which the intraocular lens rests, to a distal end opening of the insertion tube a cross section, wherein upper and lower portions have traverse linear portions that extend substantially parallel in a width direction, left and right portions connect smoothly with the upper and lower portions, the left and right portions, in at least one part of the insertion tube in the direction of extension towards the proximal end opening, have longitudinal linear portions that extend substantially parallel in a vertical direction, and the left and right portions gradually curve in an inwardly concave direction at a progressively smaller curvature radius toward the distal end opening so that the upper and lower portions gradually approach one another to form a tapered portion having a reduced cross-sectional area, thus producing the distal end opening of substantially oval shape.