Intraocular lens injector and its design method
AssigneeHoya Medical Singapore Pte. Ltd.
InventorKazunori Kudo
Life of this patent
Estimating the term…
Abstract
There is provided an intraocular lens injector 1 that advances an intraocular lens 4 including an optical portion 41 with an optical function and support portions 42a and 42b that extend from the optical portion 41 through a tube while folding the lens, and emits the lens from a nozzle, wherein protrusions 15 are located at both the left and right corners at an upper side of an inner wall 30 of the tube, in a cross-sectional view perpendicular to an advancement direction of the intraocular lens 4, so that the protrusions 15 prevent the optical portion 41 and the support portions 42a, 42b from entering both the left and right corners, when the intraocular lens 4 is folded while advancing. Its related art is also provided.
Claims13
An intraocular lens injector, comprising:
- an intraocular lens including an optical portion and support portions;
- a tube, through which the intraocular lens advances in an advancement direction, including a lens installation portion that holds the intraocular lens in such a manner that one support portion defines a front support portion and one support portion defines a rear support portion, an inner wall having an upper side with left and right corners, a lower side, and a location where the optical portion is located when the intraocular lens begins to valley fold towards the lower side as it advances in the advancement direction,
- a nozzle through which the intraocular lens is emitted, and
- protrusions that are located at both left and right corners at the upper side of the inner wall of the tube, in a cross-sectional view perpendicular to the advancement direction of the intraocular lens, a portion of each protrusion being located at a location between a front end of the optical portion and a front end of the front support portion of the intraocular lens when the intraocular lens is installed in the lens installation portion prior to moving in the lens advancement direction and where the optical portion will be located when the intraocular lens begins to valley fold while moving in the lens advancement direction such that the protrusions prevent the optical portion and the support portions from entering both the left and right corners of the upper side of the inner wall of the tube when the intraocular lens is valley folded while advancing.
A method of an intraocular lens injector that advances an intraocular lens, the intraocular lens including an optical portion with an optical function and defining a front end and a front support portion that extends from the optical portion and defines a front end, from a lens installing portion through a tube while folding the lens beginning at a location between the front end of the optical portion and the front end of the front support portion, and emits the lens from a nozzle, the method comprising:
- providing protrusions at both left and right corners at an upper side of an inner wall of the tube, in a cross-sectional view perpendicular to an advancement direction of the intraocular lens, with a portion of each protrusion at a location between the front end of the optical portion and the front end of the front support portion of the intraocular lens when the intraocular lens is installed in the lens installation portion prior to moving in the lens advancement direction and where the optical portion will be located when the intraocular lens begins to valley fold while moving in the lens advancement direction so that the protrusions prevent the optical portion and the support portions from entering both of the left and right corners when the intraocular lens is valley folded while advancing.
Dependencies are inferred from the claim text.