Instrument for inserting intraocular lens
AssigneeHoya Corporation
InventorsTakashi Ichinohe, Kazunori Kudoh
Life of this patent
Estimating the term…
Abstract
An intraocular lens insertion instrument capable of smoothly pushing out a preset lens is provided. An intraocular lens insertion instrument comprises: a main body including a lens setting section on which a lens is set, a transition section that deforms the lens, and a nozzle piece that releases the lens; and a lens push-out mechanism that pushes out the lens set on the lens setting section. The instrument further includes a releasing means for releasing the lens pushed by the lens push-out mechanism from the lens setting section. The releasing means has a posture holding mount that holds the lens with a forward tilt relative to an axial line of lens movement. The posture holding mount has a passage through which the lens push-out mechanism passes.
Claims17
An intraocular lens insertion instrument comprising:
- a main body including a lens setting section that is configured to store an unstressed intraocular lens thereon, a transition section for deforming the intraocular lens, and a nozzle piece for discharging the intraocular lens;
- a slider that moves distally toward the transition section and pushes the unstressed intraocular lens distally from the lens setting section to the transition section, thereby folding the intraocular lens;
- a releasing device releasing the intraocular lens pushed by the slider from the lens setting section, wherein the releasing device includes
- a posture holding mount holding the lens such that an edge of the lens closest to the nozzle piece is lower in elevation relative to an opposite edge of the lens farthest from the nozzle piece, resulting in the lens having a forward tilt relative to an axial line of lens movement,
- wherein the posture holding mount includes
- a slope inclined downwards toward the nozzle piece;
- and
- a groove through which the slider passes;
- and
- a plunger that pushes the folded intraocular lens distally from the transition section and through the nozzle piece;
- wherein the slider and the plunger are associated with one another such that the slider is distally movable relative to the plunger, and the plunger is distally movable relative to and distal of the slider.
An apparatus, comprising:
- a main body defining a lens movement direction and including a lens setting section, a nozzle, and a tapered transition section between the lens setting section and the nozzle, the lens setting section having a first and second longitudinally extending members, separated by a groove, that slope downward toward the nozzle;
- an intraocular lens stored on the first and second longitudinally extending members in a substantially unstressed state with an edge closest to the nozzle lower in elevation than an opposite edge farthest from the nozzle;
- a slider carried within the main body and movable in the lens movement direction to drive the intraocular lens from the lens setting section to the tapered transition section;
- and
- a plunger carried within the main body and movable in the lens movement direction to drive the intraocular lens from the tapered transition section and through the nozzle;
- wherein the slider and the plunger are associated with one another such that the slider is distally movable relative to the plunger, and the plunger is distally movable relative to and distal of the slider.
Dependencies are inferred from the claim text.