Patent ID: 8080017

Claim:
An intraocular lens insertion tool for accommodating an intraocular lens, comprising: a tool body having generally tubular shape for accommodating the intraocular lens, and including an insertion tube section disposed at a distal end section of the tool body in an axial direction; and a plunger member adapted to be inserted into the tool body from a rear in the axial direction and adapted to be moved forward to insert into an eye the intraocular lens such that the intraocular lens undergoes compact deformation in association with forward displacement in the axial direction by the plunger member and is adapted to be pushed out through the insertion tube section, wherein the insertion tube section has at a distal end thereof an inclined orifice that opens diagonally with respect to a center axis of the insertion tube section, the plunger member is furnished with a sliding part that is remote from a distal end portion thereof and slides against the tool body during displacement thereof in a direction of plunging into the tool body, a resistance graduating mechanism is provided to gradually increase operation resistance of the plunger member by gradually increasing contact force exerted on the sliding part as the intraocular lens gradually emerges from the inclined orifice through plunging of the plunger member into the tool body, and the resistance graduating mechanism is constituted by providing an inclined face inclined with respect to a plunging direction of the plunger member, to at least one of the sliding part of the plunger member, and a contact portion provided on the tool body and adapted to slide against the sliding part during plunging of the plunger member.