Intraocular lens insertion device
DCFirst Claim
1. A method performed by an intraocular lens insertion device on an intraocular lens, the intraocular lens including an optic, a forward haptic having an end and a rear haptic having an end, the insertion device including a nozzle, a transition section and a plunger having a forward region with a side wall and a bottom wall that together define an indentation and is configured to receive a portion of the rear haptic, the method comprising the steps of:
- pushing the rear haptic such that the end of the rear haptic moves upwardly and forwardly relative to the optic;
pushing the rear haptic such that the end of the rear haptic passes over the optic, while the portion of the optic over which the rear haptic passes remains unfolded, with the forward region of the plunger in such a manner that the rear haptic is bent and a portion of the rear haptic is received in the indentation;
folding a portion of the optic such that there is a space between folded portions of the optic; and
pushing the intraocular lens through the nozzle with the forward region of the plunger while the end of the rear haptic is in the space between the folded portions of the optic.
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Abstract
There is provided an intraocular lens insertion device capable of appropriately regulating the motion of a rear supporting portion during a process of moving an intraocular lens, and reducing the possibility of reoperation being required after the intraocular lens is inserted into an eye. An intraocular lens insertion device 1 comprises a main body 2, and a slider 3 and a plunger 4 that are attached to the main body 2. Further, the intraocular lens insertion device 1 is of a preset type in which an intraocular lens 5 is placed inside the main body 2 in advance. The slider 3 includes a first abutting portion 21 for pushing up a supporting portion 7 (rear supporting portion 7a) arranged on a rear side of an optical part 6 with respect to a lens advancement axis A, and second abutting portions 22a, 22b abutting against an outer edge of a rear portion of the optical part 6.
298 Citations
16 Claims
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1. A method performed by an intraocular lens insertion device on an intraocular lens, the intraocular lens including an optic, a forward haptic having an end and a rear haptic having an end, the insertion device including a nozzle, a transition section and a plunger having a forward region with a side wall and a bottom wall that together define an indentation and is configured to receive a portion of the rear haptic, the method comprising the steps of:
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pushing the rear haptic such that the end of the rear haptic moves upwardly and forwardly relative to the optic; pushing the rear haptic such that the end of the rear haptic passes over the optic, while the portion of the optic over which the rear haptic passes remains unfolded, with the forward region of the plunger in such a manner that the rear haptic is bent and a portion of the rear haptic is received in the indentation; folding a portion of the optic such that there is a space between folded portions of the optic; and pushing the intraocular lens through the nozzle with the forward region of the plunger while the end of the rear haptic is in the space between the folded portions of the optic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method performed by an intraocular lens insertion device on an intraocular lens, the intraocular lens including an optic, a forward haptic having a free end and a rear haptic having a free end, the insertion device including a nozzle, a transition section and a plunger, the method comprising the steps of:
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moving the free end of the rear haptic, from a position rearward of the optic, over the optic and into a space between folded portions of the optic with the plunger; moving the free end of the forward haptic into the space between the folded portions of the optic with the transition section; and pushing the intraocular lens with the plunger through the nozzle with the free ends of the forward and rear haptics in the space between the folded portions of the optic. - View Dependent Claims (13, 14, 15, 16)
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Specification