Source: https://patents.google.com/patent/US20120071887A1/en
Timestamp: 2018-03-17 20:37:03
Document Index: 37598337

Matched Legal Cases: ['art 15', 'art 31', 'art 15', 'art 16', 'art 15', 'art 15', 'art 31', 'art 31', 'art 31', 'art 15', 'art 75', 'art 76', 'art 75', 'art 76', 'art 76', 'art 31', 'art 76', 'art 76', 'art 76', 'art 75', 'art 76', 'art 75', 'art 76', 'art 80', 'art 81', 'art 80', 'art 100', 'art 122', 'art 101', 'art 15', 'arts 4', 'art 4', 'art 15', 'art 4', 'art 100', 'art 47', 'art 31', 'art 31', 'art 75', 'art 31', 'art 76', 'art 76', 'art 31', 'art 76', 'art 76', 'art 75', 'art 75', 'art 4', 'art 75', 'art 4', 'art 4', 'art 4', 'art 76', 'art 31']

US20120071887A1 - Intraocular lens insertion device - Google Patents
US20120071887A1
US20120071887A1 US13244452 US201113244452A US2012071887A1 US 20120071887 A1 US20120071887 A1 US 20120071887A1 US 13244452 US13244452 US 13244452 US 201113244452 A US201113244452 A US 201113244452A US 2012071887 A1 US2012071887 A1 US 2012071887A1
US13244452
US8535375B2 (en )
An intraocular lens insertion device capable of folding an intraocular lens into a predetermined shape without giving a local stress to the intraocular lens. The intraocular lens insertion device 2 may include a lens disposing part 15 for disposing an intraocular lens 4, a slider 7 for pushing out the intraocular lens 4, a plunger 8 for further pushing out the intraocular lens pushed out by the slider 7, a transition part 31 for deforming the intraocular lens 4 pushed out by the slider and the plunger, and a nozzle 32 for ejecting out the deformed intraocular lens 4.
This application is a divisional of U.S. application Ser. No. 12/602,454, filed Nov. 30, 2009, which is the U.S. national stage of PCT application Ser. No. PCT/JP2009/059995, filed May 30, 2008, each of which is incorporated herein by reference in its entirety.
For solving these problems, it is disclosed that a transition part in which a lens is folded during the movement of an intraocular lens therein has a basal end of an approximately rhombic shape that is gradually deformed into a circular shape at a leading end thereof (For example Patent Document 1).
Patent Document 1: Specification of U.S. Pat. No. 5,275,604
To achieve the above-mentioned object, the intraocular lens insertion device according to a first aspect of the invention is characterized in comprising: a lens disposing part where an intraocular lens is disposed; a slider for pushing out the intraocular lens; a plunger fior further pushing out the intraocular lens pushed out by the slider; a transition part for deforming the intraocular lens pushed out by the slider and the plunger; and a nozzle for ejecting out the deformed intraocular lens,
wherein the slider includes: a lens push-out part having a larger contact area than that of the plunger; and a lens holder for pressingly holding one face of an optical part of the intraocular lens relative to one direction, and
the transition part deforms portions of an outer edge of the intraocular lens that are parallel to a lens traveling direction relative to an other direction opposite to the one direction.
The invention according to a second aspect of the invention is characterized in that the transition part has a pair of rails parallel to a lens traveling direction and the rails have an inclined face inclined to the other direction as the lens moves to the traveling direction.
According to the intraocular lens insertion device set forth in the first aspect, an intraocular lens can be surely folded into a predetermined shape by pressing an optical part of the intraocular lens through a lens holder and at the same time deforming the outer edge of the intraocular lens into the opposite direction to the one direction through a transition part. Further, the structure is comparatively simple, and hence, it is possible to readily form the intraocular lens insertion device and further to readily mass-produce the same.
According to the intraocular lens insertion device set forth in the second aspect, the intraocular lens can be surely deformed into a predetermined shape only by moving the intraocular lens in the lens traveling direction.
FIG. 9 is a cross-sectional view along a line A-A in FIG. 7A;
FIG. 14A is a a front view showing the structure of a plunger and FIG. 14B is a left side view thereof;
FIG. 17A is a plan view showing the structure of a case leading end, FIG. 17B is a vertical cross-sectional view thereof, and FIG. 17C is an end view thereof;
FIG. 30 is a plan view of the leading end member and FIGS. 30A-30E are partial cross-section views thereof showing the operation of the device step by step;
An intraocular lens insertion device 1 shown in FIG. 1 comprises an intraocular lens insertion unit 2 and a casing 3, and is structured in such a way that the intraocular lens insertion unit 2 in which an intraocular lens 4 is loaded beforehand is placed in the casing 3. The intraocular lens insertion unit 2 is placed in the casing 3 in this manner, thereby preventing the intraocular lens 4 loaded in the intraocular lens insertion unit 2 beforehand from accidentally being ejected out therefrom, and from being damaged during a delivery thereof, and prior to a surgery such as at a presurgery preparation after shipment of the intraocular lens insertion device 1 from a manufacturing factory. Forming the intraocular lens insertion device 1 mainly of a synthetic resin overall facilitates a mass production thereof, thus suitable for a disposal application. Note that in the following explanations, the front of a lens traveling axis as a lens traveling direction is simply called “front”, and the rear of the lens traveling axis is simply called “rear”.
As shown in FIGS. 3A and 3B, the basal end member 11 has a lens disposing part 15, an engagement part 16, slider guides 17, a stopper 18, first latching openings 19, and an engagement protrusion 20.
The lens disposing part 15 is formed of a tabular member protruding frontward from a front one end. As shown in FIG. 4, the lens disposing part 15 has a disposing-part bottom face 25 formed horizontal along the lens traveling axis A, and a disposing frame 26 formed at both ends of the disposing-part bottom face 25 parallel to the lens traveling axis A and across the lens traveling axis A. The disposing frame 26 has frame bodies 27, 27 and base end rails 28, 28. Wall-like frame bodies 27, 27 are provided in a standing manner, surrounding the disposing-part bottom face 25 so as to be provided across the lens traveling axis A, and the base end rails 28, 28 are formed integral with the frame bodies 27, 27 in a manner protruding upward of the disposing bottom face 25.
As shown in FIGS. 3A and 3B, the engagement member 16 has first protrusions 21, 21 and widened-part receivers 22, and the first protrusions 21, 21 and the widened-part receivers 22 are provided at the front end of the basal member 11. The two first protrusions 21, 21 are provided in a protruding manner on the outer faces of side walls in a direction orthogonal to the lens traveling axis A. The first protrusions 21, 21 are each formed in a shape like a wedge tapered toward the front. The two widened-part receivers 22 are provided on side walls in a direction orthogonal to the lens traveling axis A and the direction in which the first protrusions 21, 21 are provided. The widened-part receiver 22 is formed by cutting out the side walls of the basal end member 11 so as to be widened toward the front. Accordingly, the first protrusions 21, 21 are provided in a direction orthogonal to the widened-part receivers 22.
As shown in FIGS. 5A, 5B and 30, the leading end member 12 has the first coupler 13, a transition part 31, and a nozzle 32, and folds up the intraocular lens pushed out from the main body compactly, and ejects out the intraocular lens 4 from the nozzle 32 at the leading end. The leading end member 12 has the first coupler 13 formed at the outer edge of the basal end, and coupled to the main body 6. The leading end member 13 further has the transition part 31 and the nozzle 32 in this order toward the front along the lens traveling axis A.
As shown in FIG. 6, the transition part 31 has a lumen 40, a transition-part bottom face 41, and a leading end rail 42 serving as a rail, and folds the intraocular lens 4 disposed on the lens disposing part 15 in a predetermined shape while moving the intraocular lens 4. Note that the rail is so formed as to support portions of the outer edge 4 c of the intraocular lens 4 that are parallel to the lens traveling axis A, from beneath.
The inclined face 42 a of the leading end rail 42 has a certain inclination angle to the transition-part bottom face 41 in FIG. 6, but may be parallel to the transition-part bottom face 41, and in that case, it is desirable that the inclined face 42 a should have a height approximately same as that of the base end rail 28 in the vicinity of the basal end member 11, and should gradually increase the height toward the front. The leading end rail 42 may employ a structure of gradually increasing the inclination angle toward the leading end, i.e., having a height approximately equal to that of the base end rail 28 in the vicinity of the basal end member 11, and of gradually inclining inwardly toward the leading end.
The lens contact part 75 and the protrusive part 76 are provided at the one end of the rod 71, and are so structured as to contact the outer edge 4 c of the intraocular lens 4 that has undergone the first stage of movement and deformation by the slider 7, and then perform the second stage of movement and deformation on the intraocular lens 4. The lens contact part 75 is formed at one side of the front end of the rod 71 and is composed of a plane perpendicular to the lens traveling axis A.
As shown in FIG. 12, the protrusive part 76 is pressed in a direction orthogonal to the lens traveling axis A by the intraocular lens 4 pushed out and deformed by the plunger 8. Namely, the protrusive part 76 is so formed as to slide into the overlapped portion of the outer edge of the intraocular lens 4 folded as it travels in the transition part 31. Accordingly, the protrusive part 76 is urged relatively by the thickness to which the outer edge 4 c of the intraocular lens 4 is overlapped. Therefore, as the intraocular lens 4 is deformed, the protrusive part 76 is pushed in a direction orthogonal to the lens traveling axis A, i.e., toward the lumen 40 by the intraocular lens 4. The protrusive part 76 is provided on the other side of the front end of the rod 71, and protrudes frontward beyond the lens contact part 75. The protrusive part 76 has an upper face formed in a smoothly and convexly curved face. In this manner, the rod 71 has the lens contact part 75 formed in a direction in which the protrusive part 76 is urged by the intraocular lens 4.
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 comprises a thin tabular member laid across the face of a hollow 84 formed in the plunger 8.
As shown in FIGS. 15A and 15B, the grip 73 is constituted by a member formed in a shape like a cylinder having a bottom. The grip 73 has an internal shape able to be inserted from the rear end of the basal end member 11, and has a female screw 90 formed on the internal surface to engage with an engagement protrusion 20 formed on the outer face of the basal end member 11. The grip 73 has a second attachment hole 96 formed in the center of the bottom face thereof. The grip 73 further has a plurality of antislip protrusive strips 97 formed on the outer face thereof.
The latching claw 109 is provided at a tabular member 110 protruding in the vertical direction from the casing bottom face 3 a of the other end of the opened case leading end part 100. The tabular member 110 is elastically deformable.
The gas venting hole 112 is formed through the base bottom face 3 a, thus making it possible to smoothly introduce and remove a gas at the time of a gaseous sterilization.
The claw receiving part 122 is provided at a tabular member 124 protruding from the casing bottom face 3 a of the opened end of the case rear end part 101 in the vertical direction. The tabular member 124 is elastically deformable.
With the plunger 8 and the slider 7 being locked in this manner, the intraocular lens 4 is disposed on the lens disposing part 15 (see, FIG. 24). The intraocular lens 4 is disposed in such a way that one of a pair of loop parts 4 a is positioned at the groove of the loop guide 51 of the slider 7, and the outer edge 4 c of the optical part 4 b is mounted on the base end rails 28, 28 of the lens disposing part 15. Because the base end rails 28, 28 protrude upwardly from the disposing-part bottom face 25, the intraocular lens 4 can be disposed so as not to have the portion around the center of the optical part 4 b contacted by the disposing-part bottom face 25. Therefore, according to the intraocular lens insertion device 1, the intraocular lens 4 can be stored without applying a load to the intraocular lens 4.
On the other hand, according to the embodiment, the latching rod 108 at the case leading end part 100 is formed in such a way that the length of the lower latching rod 108 b in the heightwise direction is longer than the length of the upper latching rod 108 a in the heightwise direction. Accordingly, the lower latching rod 108 b is first inserted into the third latching hole 121, and then the upper latching rod 108 a is inserted into the third latching hole 121, thereby enabling a reliable positioning. Namely, changing the lengths of the lower latching rod 108 b and the upper latching rod 108 a enables the positioning two positions by two positions, thereby remarkably facilitating positioning as compared to by conventional techniques where positioning is carried out on four positions at the same time (see, FIG. 27).
At the leading end of the slider 7, the first stage of movement and deformation is 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 pressingly holds the one face of the optical part of the intraocular lens 4 in a downward direction, which is the one direction (see, FIG. 29B, FIG. 30B).
Accordingly, the leading end rail 42 upwardly deforms both sides of the outer edge 4 c across the lens traveling axis A, which are portions parallel to the lens traveling direction, in the peripheral edge of the intraocular lens 4, in a direction opposite to the direction in which the intraocular lens 4 is pushed by the lens holder 52 (see, FIG. 30C).
Therefore, according to the intraocular lens insertion unit 2 of the embodiment, the lens holder 52 presses the optical part of the intraocular lens 4 downwardly, while the leading end rail 42 upwardly pushes both sides of the outer edge 4 c of the intraocular lens 4 across the lens traveling axis A. Accordingly, the intraocular lens insertion unit 2 can surely fold the intraocular lens 4 in a predetermined shape, i.e., such a shape that the optical part surely protrudes downwardly in the embodiment (see, FIG. 29C and FIG. 30D).
In contrast, according to the intraocular lens insertion unit 2 of the embodiment, the leading end rail 42 is provided with the inclined face 42 a to deform both sides of the outer edge 4 c of the intraocular lens 4 across the lens traveling axis A. Therefore, the shape of the transition part 31 is simplified, thus facilitating the manufacturing of the transition part.
The released plunger 8 performs the second stage of movement and deformation on the intraocular lens 4 deformed in the predetermined shape by the slider 7. That is, as the plunger 8 is pushed out frontward through the guide groove 48 provided in the one side of the slider 7, the lens contact part 75 contacts the outer edge 4 c of the intraocular lens 4 deformed in the predetermined shape by the slider 7. The grip 73 is then pushed out, and the female screw 95 is threaded with the engagement protrusion 20 of the basal end member 11. As the grip 73 is rotated in this state, the plunger 8 can be moved to a predetermined extent. As the plunger 8 is moved frontward in this manner, the intraocular lens 4 is further pushed out to the transition part 31, and is folded more compactly (see, FIG. 29D and FIG. 30E). At this time, a sliding resistance applied to the leading end of the rod 71 becomes large.
In contrast, according to the intraocular lens insertion unit 2 of the embodiment, 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 the thickness to which the outer edge of the intraocular lens 4 is overlapped. 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. Then, the lens contact part 75 is pressed downward of 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 of the optical part 4 b of the intraocular lens 4, thereby surely preventing the plunger 8 from running on the optical part 4 b.
An intraocular lens insertion device which does not have the foregoing slider 7 can also achieve the above-mentioned effect that a running of the plunger 8 on the optical part 4 b of the intraocular lens 4 is surely prevented because the plunger 8 has the protrusive part 76 provided at the leading end thereof. Namely, intraocular lens insertion devices which deform an intraocular lens while moving the intraocular lens by pushing out the intraocular lens disposed at a lens disposing part in a transition part by a plunger may employ a structure of deforming portions of an outer edge of the intraocular lens across a lens traveling axis in a direction orthogonal to the lens traveling axis.
Accordingly, the protrusive part slides into an overlapped portion of the outer edge of the intraocular lens folded as it travels in a transition part 31. Thus, because the protrusive part is relatively urged by the thickness to which the outer edge 4 c of the intraocular lens is overlapped in this manner, it is possible to prevent the plunger from running on the optical part of the intraocular lens.
1. An insertion method, comprising the steps of:
pushing an unfolded intraocular lens, having a lens optic and a lens outer edge, in a first direction;
moving diametrically opposed portions of the lens outer edge in a second direction transverse to the first direction as the intraocular lens is being pushed in the first direction; and
during the moving step, folding the intraocular lens by preventing a portion of the lens optic located between the diametrically opposed portions of the lens outer edge from moving in the second direction.
2. An insertion method as claimed in claim 15, wherein the step of pushing an unfolded intraocular lens comprises pushing the unfolded intraocular lens with a slider.
3. An insertion method as claimed in claim 2, further comprising the step of:
pushing the folded intraocular lens with a plunger that is movable relative to the slider.
4. An insertion method as claimed in claim 1, wherein the step of moving diametrically opposed portions of the lens outer edge comprises:
positioning the diametrically opposed portions of the lens outer edge on first and second rails, with a gap therebetween, that extend in the second direction; and
pushing the intraocular lens along the first and second rails.
5. An insertion method as claimed in claim 1, wherein the step of folding the intraocular lens comprises pivoting a lens holder into contact with the portion of the lens optic located between the diametrically opposed portions of the lens outer edge.
US13244452 2007-05-30 2011-09-24 Intraocular lens insertion device Active US8535375B2 (en)
JP2007-144263 2007-05-30
US60245409 true 2009-12-15 2009-12-15
US13244452 US8535375B2 (en) 2007-05-30 2011-09-24 Intraocular lens insertion device
US12602454 Division
PCT/JP2008/059995 Division WO2008149794A1 (en) 2007-05-30 2008-05-30 Intraocular lens inserting tool
PCT/JP2009/059995 Division WO2009148021A1 (en) 2008-06-03 2009-06-01 Packet analysis apparatus
US60245409 Division 2009-12-15 2009-12-15
US20120071887A1 true true US20120071887A1 (en) 2012-03-22
US8535375B2 US8535375B2 (en) 2013-09-17
US12602454 Active US8475528B2 (en) 2007-05-30 2008-05-30 Intraocular lens insertion device
US13244452 Active US8535375B2 (en) 2007-05-30 2011-09-24 Intraocular lens insertion device
GB201121372D0 (en) 2011-11-22 2012-01-25 Zeiss Carl Meditec Ag Injector tip for an ocular lens injector device with an injector tip and an ocular lens,as well as ocular lens injector device
US8535375B2 (en) 2013-09-17 grant
EP2161004B1 (en) 2017-12-27 grant
CN101677853B (en) 2012-04-18 grant
WO2008149794A1 (en) 2008-12-11 application
EP2161004A4 (en) 2013-10-30 application
US20100185206A1 (en) 2010-07-22 application
JPWO2008149794A1 (en) 2010-08-26 application
JP5236637B2 (en) 2013-07-17 grant
EP2161004A1 (en) 2010-03-10 application
US8475528B2 (en) 2013-07-02 grant
CN101677853A (en) 2010-03-24 application
US20040117012A1 (en) 2004-06-17 Injector for an intraocular lens
US20080039862A1 (en) 2008-02-14 Lens delivery system
US20080119865A1 (en) 2008-05-22 Device for Loading an Intraocular Lens Into an Injection Cartridge
US20050283162A1 (en) 2005-12-22 Intraocular lens inserter