Source: https://patents.google.com/patent/US20090036898
Timestamp: 2018-03-20 05:34:22
Document Index: 86926052

Matched Legal Cases: ['art 25', 'art 25', 'art 25', 'art 25', 'art 25', 'art 22', 'art 2', 'art 25', 'art 2', 'art 25', 'art 23', 'art 25', 'art 2', 'art 25', 'art 2', 'art 18', 'art 18', 'art 18', 'art 18', 'art 18', 'art 2', 'art 2', 'art 23', 'art 23']

US20090036898A1 - Instrument For Inserting Intraocular Lens - Google Patents
US20090036898A1
US20090036898A1 US12088328 US8832806A US2009036898A1 US 20090036898 A1 US20090036898 A1 US 20090036898A1 US 12088328 US12088328 US 12088328 US 8832806 A US8832806 A US 8832806A US 2009036898 A1 US2009036898 A1 US 2009036898A1
US8574239B2 (en )
Patent Document 1: Japanese Patent Application Laid-Open (JP-A) No. 2003-325570 Patent Document 2: JP-A No. 2003-325572 Patent Document 3: JP-A No. 2004-24854 Patent Document 4: JP-A No. 2001-502563 DISCLOSURE OF INVENTION Problems to be Solved by the Invention
The lens holding part 25 enables the lens 2 to be folded up in a predetermined direction by pressingly holding one surface of the lens 2 only when pushing out the lens 2. That is, by pressing the one surface of the lens 2 that is to become a front surface thereof when inserted into an eye, using the lens holding part 25, the lens 2 is folded with the one surface thereof being inside, within the nozzle portion 11. Accordingly, the lens 2 can be deformed into such a shape that allows the lens 2 to be reliably inserted into a lens capsule. As shown in FIG. 3, this lens holding part 25 is provided at the distal end of the slider 15 through a hinge mechanism 28, and is provided in a manner capable of being tilted up and down in a side view. The hinge mechanism 28 is formed of a tapered groove provided by thinning a joint portion between the lens holding part 25 and the lens abutting portion 20 in the width direction of the slider 15. The lens holding part 25 is urged upwards in a side view, through this hinge mechanism 28, thus enabling the lens 2 to be folded in a predetermined direction by holding one side of the lens 2 when the lens 2 moves within the nozzle portion 11.
Next, is a description of an assembling procedure of the intraocular lens insertion device 1 structured in this way, First, the slider 15 is attached to the proximal member 5. In order to attach the slider 15 to the proximal member 5, the wing part 22 is allowed to be fitted into the slit 9 from the edge of the one end of the proximal member 5, and the slider 15 is pushed in up to the proximal end of the slit 9. Subsequently, the plunger 16 is inserted from the other end of the proximal member 5. At that moment, the distal end of the plunger 16 is aligned with such a position that it does not project from the distal end of the slider 15 placed in the proximal member 5. Then, the loop part 2 b of the lens 2 is fastened by the loop guide 24 formed in the slider 15, and the lens 2 is placed in the lens placement portion 8. The lens 2 placed in the lens placement portion 8 is arranged in such a condition that the lens holding part 25 does not abut to the optic part 2 a of the lens 2 due to the lens holding part 25 being urged toward an inner wall of the distal member 6 by the hinge mechanism 28, as shown in FIG. 3 (A). Subsequently, the distal member 6 and the proximal member 5 are integrated with each other in the engagement section 7. Thus, the intraocular lens insertion device 1 can be assembled reliably, without applying a load to the lens 2.
Next, the action of the above-mentioned structure will be explained. After taking out the intraocular lens insertion device 1 from the sterilization bag, the operating part 23, at first, is pushed out and thus the slider 15 is moved in the direction of the lens movement axis A. Upon the movement of the slider 15, the lens holding part 25 is pressed by the inner wall of the transition portion 12, and tilted downward in a side view, thereby pressingly holding the one surface of the optic part 2 a of the lens 2 (FIG. 4 (B)). When the slider 15 pushes out the lens 2, the lens holding part 25 presses down the one surface of the optic part 2 a, thus enabling the lens 2 to be folded in the predetermined direction. The plunger 16 is pushed out after the slider 15 abuts to the stopper 13 and then stops (FIG. 4 (C)). In order to push out the plunger 16, first, the grip part 18 is pushed out, and the female screw 19 a is engages with the engagement projection 10 by screwing. Subsequently, the grip part 18 is rotated. Upon the rotation of the grip part 18, the grip part 18 is moved in the direction of the lens movement axis A from the other end of the proximal member 5, and thus the push-out rod 17 is pushed by the grip part 18 to move in the direction of the lens movement axis A, thus pushing out the plunger 16. In this way, the lens 2 is folded up by being pushed by the plunger 16 and passing through the thin nozzle portion 11. Thus, pushing out the plunger 16 further with the lens 2 being folded allows the lens 2 to be inserted into an eye. Since the partition 29 is provided between the guide groove 21 and the loop guide 24 when pushing out the plunger 16, it is possible to prevent the damage of the loop part 2 b due to the plunger 16 not pushing the loop part 2 b.
According to the present embodiment as mentioned above, the intraocular lens insertion device 1 comprises: the main body 3, including the lens placement portion 8 that places the lens. 2 therein, the transition portion 12 to deform said lens 2, and the nozzle portion 11 to introduce said lens 2; and the lens push-out mechanism 4 that pushes out the lens 2 placed in said lens placement portion 8, wherein said lens push-out mechanism 4 comprises: the plunger 16 that pushes out the lens 2; and the slider 15 having the lens abutting portion 20 larger than this plunger 16, while said slider 15 includes the operating part 23 projected outwardly from said main body 3, and the lens 2 is deformed by moving said slider 15 through the operation of said operating part 23 so that said lens 2 is discharged from said nozzle portion 11 by said plunger 16, whereby the discharge operation of the lens 2 can be performed reliably and safely with simpler structure.
14. An intraocular lens insertion device comprising:
wherein said intraocular lens is deformed by moving said slider in the direction of a lens movement axis by handling said operating part, while said intraocular lens is discharged from said nozzle portion by said plunger.
15. The intraocular lens insertion device according to claim 14, wherein said operating part is projected outwardly from mutually opposed side surfaces of said main body.
16. The intraocular lens insertion device according to claim 14, wherein said operating part is projected outwardly from one side of said main body.
17. The intraocular lens insertion device according claim 14, wherein said slider is provided with a lens holding part that holds one surface of an optic part of said intraocular lens and deforms said intraocular lens in a predetermined direction.
18. The intraocular lens insertion device according to claim 17, wherein said lens holding part holds only the intraocular lens moved to said transition portion.
19. The intraocular lens insertion device according to claim 18, wherein said lens holding part is connected with said slider via a hinge mechanism and is urged toward a sidewall of said main body, while said lens holding part is deformed toward the optic part of said intraocular lens through said transition portion.
20. The intraocular lens insertion device according to claim 14, wherein said slider is provided with an inserting passage for inserting said plunger therethrough.
21. The intraocular lens insertion device according to claim 14, wherein said intraocular lens comprises a pair of loop parts at said optic part, while said slider is provided with a loop guide to support said loop parts in such a condition that no physical load is applied thereto.
22. The intraocular lens insertion device according to claim 21, wherein said slider is provided with a partition between said inserting passage and said loop guide.
23. The intraocular lens insertion device according to claim 14, wherein a lock mechanism to lock said plunger is provided, said lock mechanism being constructed so that it can be unlocked by moving said slider.
24. The intraocular lens insertion device according to claim 23, wherein said lock mechanism is unlocked in association with the movement of said slider.
25. The intraocular lens insertion device according to claim 14, wherein said intraocular lens is sterilized with said intraocular lens being placed on said lens placement portion.
26. The intraocular lens insertion device according to claim 14, wherein said main body is provided with a stopper to stop said slider at a predetermined position.
US20090036898A1 true true US20090036898A1 (en) 2009-02-05
US8574239B2 US8574239B2 (en) 2013-11-05
US8574239B2 (en) 2013-11-05 grant