Intraocular lens insertion device

摘要

An instrument for inserting an intraocular lens capable of securely and safely pushing out the lens by a simple structure. An instrument (1) for inserting comprises: a body (3) having a lens placement part (8) on which the lens (2) with a pair of loop parts (2b) at its optic part (2a) is installed, a transition part (12) deforming the lens (2), and a nozzle part (11) discharging the lens (2); and a lens push-out mechanism (4) pushing out the lens (2) placed on the lens placement part (8). The lens push-out mechanism (4) comprises a plunger (16) pushing out the lens (2) and a slider (15) having a lens contact part (20) larger than the plunger (16). The slider (15) comprises an operation part (23) projected to the outside of the body (3).

主权项

1. A method, comprising the steps of:
pushing an unfolded intraocular lens, having an optic part with a first optical surface, a second optical surface opposite the first optical surface, and an outer edge between the first and second optical surfaces out of a lens placement portion of an injector having a plunger and into a tapered transition portion such that a portion of the optic part is on a central lens traveling axis of the tapered transition portion; folding the unfolded intraocular lens as the intraocular lens moves along the central lens travelling axis and through the tapered transition portion by applying a force to the first optical surface of the portion of the optic part that is on the central lens travelling axis, and in a direction transverse to the central lens travelling axis, while the tapered transition portion engages laterally spaced portions of the outer edge and folds the intraocular lens about the portion of the first optical surface to which force is applied; and pushing the folded intraocular lens along the central lens travelling axis, out of the tapered transition portion and through a nozzle.