Intraocular lens insertion device
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 7 a ) arranged on a rear side of an optical part 6 with respect to a lens advancement axis A, and second abutting portions 22 a, 22 b abutting against an outer edge of a rear portion of the optical part 6.
1. An intraocular lens insertion apparatus, comprising:
a main body;
an intraocular lens including an optic and haptics, each haptic having a free end, stored in the main body in such a manner that one of the haptics is a proximal haptic and one of the haptics is a distal haptic;
a nozzle associated with the main body and configured to be inserted into an eye; and
a plunger, carried within the main body and movable relative to the main body from a first position to a second position at the nozzle, including a lens contact portion and a recess that is located above the lens contact portion, that extends proximally from the lens contact portion, that has a first lateral side that is open, a second lateral side that is closed by a lateral wall, and an open distal end, wherein the plunger is configured to hold a portion of the proximal haptic in the recess when the proximal haptic is bent such that the free end of the proximal haptic is positioned over the optic.
2. An intraocular lens insertion apparatus as claimed in claim 1 , wherein
the plunger includes a top wall that extends over at least a portion of the recess.
3. An intraocular lens insertion apparatus as claimed in claim 1 , wherein
the plunger includes a portion with a slanted wall and the slanted wall defines a proximal end of the recess.
4. An intraocular lens insertion apparatus as claimed in claim 3 , wherein
the plunger defines a longitudinal axis; and
the slanted wall is oriented at a non-perpendicular angle with respect to the longitudinal axis.
5. An intraocular lens insertion apparatus as claimed in claim 3 , wherein
the slanted wall extends from the lateral wall to the first lateral side that is open.
6. An intraocular lens insertion system as claimed in claim 1 , further comprising:
a slider movable relative to the plunger from a pre-use slider position to a second slider position.
7. An intraocular lens insertion apparatus as claimed in claim 6 , wherein
movement of the slider from the pre-use slider position to the second slider position moves the free end of the proximal haptic towards the optic.
8. An intraocular lens insertion apparatus as claimed in claim 1 , wherein
the plunger includes a rotatable handle.
9. An intraocular lens insertion apparatus as claimed in claim 1 , wherein
the plunger includes a thumb rest.
10. An intraocular lens insertion apparatus as claimed in claim 1 , wherein
the lens contact portion is planar.
11. An intraocular lens insertion apparatus as claimed in claim 1 , wherein
the main body includes a base portion and an insertion tube.
12. An intraocular lens insertion apparatus as claimed in claim 11 , wherein the insertion tube includes a tapered transition section and the nozzle.
13. An intraocular lens insertion apparatus, comprising:
a main body;
an intraocular lens including an optic and haptics, each haptic having a free end, stored in the main body in such a manner that one of the haptics is a proximal haptic and one of the haptics is a distal haptic;
a nozzle associated with the main body and configured to be inserted into an eye; and
a plunger, carried within the main body and movable relative to the main body, including a lens contact portion and a recess that extends proximally from the lens contact portion, that has a first lateral side that is open, a second lateral side that is closed by a lateral wall, and an open distal end, and that is configured to hold a portion of the proximal haptic when the proximal haptic is bent such that the free end of the proximal haptic is positioned over the optic;
wherein the insertion apparatus defines an x-direction and a y-direction that is perpendicular to the x-direction, the plunger moves in the x-direction, the lens contact portion and the recess are offset from one another in the y-direction, and the first and second lateral sides are offset from one another in a lateral direction that is perpendicular to both the x-direction and the y-direction.
14. An intraocular lens insertion apparatus as claimed in claim 13 , wherein
the plunger includes a top wall that extends over at least a portion of the recess.
15. An intraocular lens insertion apparatus as claimed in claim 13 , wherein
the plunger includes a portion with a slanted wall and the slanted wall defines a proximal end of the recess; and
the plunger defines a longitudinal axis.
16. An intraocular lens insertion apparatus as claimed in claim 15 , wherein
the slanted wall is oriented at a non-perpendicular angle with respect to the longitudinal axis.
17. An intraocular lens insertion apparatus as claimed in claim 15 , wherein
the slanted wall extends from the lateral wall to the first lateral side that is open.
18. An intraocular lens insertion system as claimed in claim 13 , further comprising:
a slider movable relative to the plunger from a pre-use slider position to a second slider position.
19. An intraocular lens insertion apparatus as claimed in claim 18 , wherein
movement of the slider from the pre-use slider position to the second slider position moves the free end of the proximal haptic towards the optic.
20. An intraocular lens insertion apparatus as claimed in claim 13 , wherein
the plunger includes a rotatable handle.
21. An intraocular lens insertion apparatus as claimed in claim 13 , wherein
the plunger includes a thumb rest.
22. An intraocular lens insertion apparatus as claimed in claim 13 , wherein
the lens contact portion is planar.
23. An intraocular lens insertion apparatus as claimed in claim 13 , wherein
the main body includes a base portion and an insertion tube.
24. An intraocular lens insertion apparatus as claimed in claim 23 , wherein the insertion tube includes a tapered transition section and the nozzle.
25. An intraocular lens insertion apparatus, comprising:
a main body;
an intraocular lens including an optic and haptics, each having a free end, stored in the main body in such a manner that one of the haptics is a proximal haptic and one of the haptics is a distal haptic;
a nozzle associated with the main body and configured to be inserted into an eye; and
a plunger, carried within the main body and movable relative to the main body, including a lens contact portion and means for holding a portion of the proximal haptic when the proximal haptic is bent such that the free end of the proximal haptic is positioned over the optic.
26. An intraocular lens insertion system as claimed in claim 25 , further comprising:
a slider movable relative to the plunger from a pre-use slider position to a second slider position.
27. An intraocular lens insertion apparatus as claimed in claim 26 , wherein
movement of the slider from the pre-use slider position to the second slider position moves the free end of the proximal haptic towards the optic.