Source: https://patents.google.com/patent/US8747465
Timestamp: 2018-02-24 02:45:41
Document Index: 307531688

Matched Legal Cases: ['art 80', 'art 81', 'art 80', 'art 47', 'art 31', 'art 75', 'art 74', 'art 75', 'art 75', 'art 74', 'art 75', 'art 75', 'art 4', 'art 76', 'art 76', 'art 31', 'art 76', 'art 76', 'art 75', 'art 75', 'art 4', 'art 75', 'art 4', 'art 75', 'art 4', 'art.\n2', 'art.\n7', 'art.\n12']

US8747465B2 - Intraocular lens insertion device - Google Patents
US8747465B2
US8747465B2 US12602442 US60244208A US8747465B2 US 8747465 B2 US8747465 B2 US 8747465B2 US 12602442 US12602442 US 12602442 US 60244208 A US60244208 A US 60244208A US 8747465 B2 US8747465 B2 US 8747465B2
US12602442
US20100217273A1 (en )
FIG. 7A is a a top plan view showing the structure of a slider and FIG. 7B is a side view thereof;
As shown in FIGS. 14A and 14B, the plunger main body 72 has a second latching part 80 and a circular disk part 81. The second latching part 80 is provided on the front outer face of the plunger main body 72, and is constituted by an elastic piece 82, and a protrusive piece 83 provided on the elastic piece 82. The elastic piece 82 forms a hollow 84 in the plunger 8, and comprises a thin tabular member laid across the face of the hollow 84 in a hanging manner.
At the leading end of the slider 7, the first stage of movement and deformation are performed on the intraocular lens 4. That is, the lens push-out part 47 of the slider 7 abuts the outer edge 4 c of the intraocular lens 4, and pushes out the intraocular lens 4 (see, FIG. 29A, FIG. 30A). At the same time, the lens holder 52 is pushed against the internal wall of the transition part 31, and swayed downwardly as viewed from a side, and pushes the one face of the optical part of the intraocular lens 4 in a downward direction, which is one direction (see, FIG. 29B, FIG. 30B).
According to the intraocular lens insertion unit 2 (the type shown in FIG. 12B), the lens contact part 75 protrudes downwardly from the axial part 74. Therefore, even if the plunger 8 bends downwardly with respect to the lens traveling axis A in a protruding manner (see, FIGS. 35A and 35B), the plane 75 a of the lens contact part 75 inclines upwardly, and the lens contact part 75 can be positioned below the axial part 74. This enables the one end corner 75 b of the lens contact part 75 to bite into the outer edge 4 c of the intraocular lens 4 in comparison with a case where the plunger 8 does not bend (see, FIG. 36) even if the plunger 8 bends downwardly with respect to the lens traveling axis A in a protruding manner and the one end corner 75 b is apart from the lower part of the lumen 40, according to the intraocular lens insertion unit 2 of this type.
In a case where the plunger 8 bends concavely toward the disposing-part bottom face 25 with respect to the lens traveling axis A, the lens contact part 75 located at the leading end of the plunger 8 is pressed against the bottom part of the lumen 40, thereby further surely preventing the leading end of the plunger 8 from running on the optical part 4 b.
According to the intraocular lens insertion unit 2, the rod 71 has the protrusive part 76 formed at the leading end thereof. The protrusive part 76 slides into the overlapped portion of the outer edge 4 c of the intraocular lens 4 folded as it travels in the transition part 31. Accordingly, the protrusive part 76 is relatively urged by what corresponds to the thickness of the overlapped portion of the intraocular lens 4. Namely, the protrusive part 76 receives force in a direction orthogonal to the lens traveling axis A from the intraocular lens 4 pushed and deformed by the plunger 8, and the force is applied to the lens contact part 75. The lens contact part 75 is pressed downward the optical part 4 b of the intraocular lens 4 by this force. Therefore, even if the sliding resistance becomes large as the intraocular lens 4 is folded compactly, the lens contact part 75 is urged downward the optical part 4 b of the intraocular lens 4, so that a lifting up of the lens contact part 75 is prevented, thereby surely preventing the plunger 8 from running on the optical part 4 b.
an intraocular lens having an optical part, an outer edge adjacent to the optical part, and a haptic adjacent to the outer edge;
a lens disposing part configured to hold the intraocular lens;
a plunger, including a distal portion defining a size and having a lens contact part and a protrusive part, which pushes the intraocular lens along a lens travelling axis, the lens contact part defining a lens contact surface that has a first end and a second end that is closer to the protrusive part than the first end, and the protrusive part defining a distal end that is located distally of the lens contact surface, a first surface on one side of the distal end and a second surface on the opposite side of the distal end, the second surface being closer to the lens contact surface than the first surface;
a nozzle through which the intraocular lens is ejected; and
a transition part between the lens disposing part and the nozzle, the transition part having an inner surface defining a lumen that decreases in size towards the nozzle;
wherein the respective sizes of the intraocular lens, the plunger distal portion and the transition part lumen are such that, when the lens contact part engages the optical part and pushes the intraocular lens through the transition part there will be a gap, between the second surface of the plunger protrusive part and the optical part, that extends from the distal end of the protrusive part to the lens contact part.
2. The device according to claim 1, wherein the respective sizes of the intraocular lens, the plunger distal portion and the transition part lumen are such that, when the lens contact part pushes the intraocular lens through the transition part, force will be applied to the first surface of the plunger protrusive part in a direction that is generally perpendicular to the lens travelling axis by the intraocular lens outer edge that causes the first end of the lens contact surface to compress and deform a proximal portion of the intraocular lens outer edge, which is located between the first end of the lens contact surface and an adjacent portion of the transition part inner surface, in a direction that is generally perpendicular to the lens travelling axis.
3. The device according to claim 1, wherein the protrusive part first surface comprises a smoothly curved convex surface.
4. The device according to claim 1, wherein the lens contact surface is substantially planar.
the intraocular lens optical part outer edge defines a thickness, and
the lens contact surface has a curved corner at the first end defining a curvature radius less than or equal to 70% of the thickness of the outer edge of the intraocular lens.
the lens disposing part has a bottom face,
the plunger has a rod like axial member, and
the lens contact part is formed in a manner protruding from the axial member toward the bottom face of the lens disposing part.
7. The device according to claim 5, wherein the plunger is formed of a synthetic resin.
8. The device according to claim 1, wherein the intraocular lens is stored on the lens disposing part.
the lens disposing part defines a bottom surface; and
the lens contact surface is adjacent to the lens disposing part bottom surface.
the lens contact surface extends, from the first end to the second end, in a direction that is generally perpendicular to the lens travelling axis; and
the gap extends in the direction that is generally perpendicular to the lens travelling axis.
the optical part defines a thickness; and
the gap extends a distance that is greater than the thickness of the optical part.
12. An insertion device for use with an intraocular lens having an optical part, an outer edge adjacent to the optical part, and a haptic adjacent to the outer edge, the insertion device comprising:
a main body including a nozzle and an inner surface that defines a lumen with a tapered portion through which the intraocular lens travels, the lumen tapered portion defining a cross-sectional size that decreases toward the nozzle;
a plunger movable through the main body lumen, including lens contact surface and defining a longitudinal axis; and
means for causing a portion of the lens contact surface to move in a direction that is generally perpendicular to the longitudinal axis and only compress and deform a proximal portion of the outer edge adjacent to the optical part that is located in the tapered portion of the lumen between the lens contact surface and an adjacent portion of the main body such that the portion of the lens contact surface is prevented from moving distally beyond the outer edge and onto the optical part in response to the application of force to the plunger in the direction generally perpendicular to the longitudinal axis by opposing regions of the intraocular lens outer edge that are located in spaced relation to the compressed and deformed portion.
13. The device according to claim 12, wherein the lens contact surface is a planer surface.
the intraocular lens optical part outer edge defines a thickness; and
the lens contact surface includes a curved corner with a curvature radius less than or equal to 70% of the thickness of the outer edge of the intraocular lens.
15. The device according to claim 12, wherein the plunger is formed of a synthetic resin.
16. The device according to claim 12, wherein the intraocular lens is stored on the lens disposing part.
US12602442 2007-05-30 2008-05-30 Intraocular lens insertion device Active US8747465B2 (en)
PCT/JP2008/059996 A-371-Of-International WO2008149795A1 (en) 2007-05-30 2008-05-30 Intraocular lens inserting tool
US20100217273A1 true US20100217273A1 (en) 2010-08-26
US8747465B2 true US8747465B2 (en) 2014-06-10
EPO Supp. Search dated Nov. 7, 2013 for corresponding EP App. Serial No. 08764914.1.
PCT International Search Report dated Jul. 15, 2008 for PCT App. Ser. No. PCT/JP2008/059996.
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SOMEYA, KENJI;ICHINOHE, TAKASHI;KUDOH, KAZUNORI;REEL/FRAME:023657/0283