CA2262934A1 - Deformable intraocular lens injecting apparatus with transverse hinged lens cartridge - Google Patents
Deformable intraocular lens injecting apparatus with transverse hinged lens cartridge Download PDFInfo
- Publication number
- CA2262934A1 CA2262934A1 CA002262934A CA2262934A CA2262934A1 CA 2262934 A1 CA2262934 A1 CA 2262934A1 CA 002262934 A CA002262934 A CA 002262934A CA 2262934 A CA2262934 A CA 2262934A CA 2262934 A1 CA2262934 A1 CA 2262934A1
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- CA
- Canada
- Prior art keywords
- lens
- wall portion
- cartridge
- movable wall
- deformable intraocular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1662—Instruments for inserting intraocular lenses into the eye
- A61F2/1664—Instruments for inserting intraocular lenses into the eye for manual insertion during surgery, e.g. forceps-like instruments
Abstract
A deformable intraocular lens injecting apparatus (10) including a transverse hinged lens cartridge (14) for allowing the lens cartridge (14) to be opened and closed for loading the deformable intraocular lens (L) into the lens cartridge (14). A preferred embodiment of a lens cartridge (14) including a lens holding portion (32) connected to a nozzle portion (34). In this preferred embodiment, the lens holding portion includes a movable wall portion (40) with a protrusion for folding the deformable intraocular lens (L) into a lens delivery passageway (44) of the lens cartridge (14) when closing the movable wall portion (40).
Description
Deformable Intraocular Lens Injecting A~paratus V~th Transverse Hinged Lens Cartridge Field of the Invention:
This invention is directed to a deformable intraocular lens injecting apparatus including a transverse hinged closure for loading the deformable intraocular lens into a lens delivery passageway of the lens injecting apparatus. In a preferred embodiment, the lens injecting apparatus includes a lens cartridge having a transverse hinged configured to open and close for loading the deformable intraocular lens into a lens delivery passageway of the lens cartridge.
0 Background of the Invention:
The present invention is directed to surgical apparatus for the impl~nt~tion of a deforrnable intraocular lens into the eye. STAAR Surgical Company of Monrovia,California developed the concept of using a "shooter" type device for implanting a deformable intraocular lens into the eye, and supplied such devices in the United States beginning around 1986.
The STAAR "shooter" apparatus includes a sepal~te lens injecting device and a separate one-piece hinged cartridge (i.e. a lens holding portion connP,cted to a nozzle portion) that can be assembled together for operation. The hinged cartridge opens along a longitudin~l axis to allow a dero~ able intraocular lens to be loaded W O98/05281 PCTrUS97/13431 in a flat configuration in the two open halves of the lens delivery passageway. When the lens cartridge is closed, a lens delivery passageway is defined therein and the deformable intraocular lens is folded about its center into a curved folded configuration inside the lens delivery passageway. The loaded lens cartridge is then assembled with the lens injecting device which includes a lens cartridge receiver and a movable plunger for forcing the deformable intraocular lens along the lens delivery passageway into the eye.
S~ y of the Invention An object of the present invention is to provide an improved deformable intraocular lens injecting apparatus.
A second object of the present invention is to provide an improved deformable intraocular lens injecting apparatus including an improved lens cartridge.
A third object of the present invention is to provide a lens cartridge which is easy to load with a deformable intraocu}ar lens.
A fourth object of the present invention is to provide a deformable intrArlCUl~rlens injecting apparatus including a transverse hinged lens cartridge configured to open and close for loading the deformable intraocular lens into the lens cartridge.
W O98/05281 PCT~US97/13431 A fifth objeet of the present invention is to provide a deformable intraocular lens injecting apparatus including a hinged lens cartridge and a lens injeeting device including a lens cartridge receiver and a movable plunger.
A sixth object of the present invention is to provide a deformable intraocular S injecting apparatus including a lens cartridge having a lens holding portion connected to a nozzle portion, the lens holding portion including wall portions connected together by a transverse hinge and configured to be opened and closed for loading a deformable intraocular lens into the lens cartridge.
- A seventh object of the present invention is to provide a deformable intraocular lens injecting apparatus including a lens cartridge having a lens holding portion connectecl to a nozzle portion, the lens holding portion including a movable wall portion connected to a stationary wall portion by a transverse hinge.
A eighth object of the present invention is to provide a deformable intraocular lens injeeting apparatus including a lens eartridge having a lens holding portion conneeted to a nozzle portion, the lens holding portion including a movable wallportion eonneeted to a stationary wall portion by a transverse hinge, and the movable wall portion including a protrusion e~ten(ling inwardly into the lens delivery passageway for folding the deformable intraocular lens into the lens delivery passageway when elosing the movable wall portion.
CA 02262934 l999-02-Ol W O98/05281 PCT~US97/13431 The present invention is directed to a lens injecting apparatus for implanting a deformable intraocular lens into the eye. The lens injecting appal~ s is provided with a lens delivery passageway therethrough ~ccescihle by means of a transversehinged closure.
S In one l,lere~led embodiment, the lens injecting apparatus is a one (1) piece or component all~ngelllent (i.e. no lens cartridge). For example, the lens injecting apparatus comprises a housing with an injecting tip and a passageway provided therethrough, a movable plunger disposed within said housing, and a transverse hinged closure along the side of the housing to allow a deformable intraocular lens to be loaded through an opening or window through the side of the housing into the lens delivery passageway when the transverse hinged closure is opened, and seal the opening or window when the transverse hinged closure is closed.
In another preferred embodiment, the lens injecting appal~tlls is a two (2) piece or co~ onent arrangement, including 1) a lens iniecting device inr,]urling a lens cartridge receiver; and 2) a lens cartridge. For example, the lens injecting device comrrices a housing, a lens cartridge receiver provided at one end of the housing, and a movable plunger disposed in the housing. The lens cartridge, for eY~mple, is a one (1) piece or co"")ollent arrangement inrlll.1ing a lens holding portion having a transverse hinged closure connecte<l to a nozzle portion. Once a deformable intraocular lens is loaded into the lens cartridge, the lens cartridge is then loaded into the lens cartridge receiver of the lens injecting device.
CA 02262934 l999-02-Ol W O98/05281 PCTrU~97/13431 The transverse hinged closure arrangement utilized in the lens injecting apparatus according to the present invention orients the hinge transverse relative to the orientation of the lens delivery passageway. Specifically, the axis of the hinge is not parallel with the longit~ldin~l axis of the lens delivery passageway. Preferably, the axis of the hinge is set at forty-five (45) to ninety (90) degrees relative to the longitudin~l axis of the lens delivery passageway. An angle of ninety (90) degrees is most preferred, especially in embodiments where the transverse hinged closure is utilized for folding the deformable intraocular lens into the lens delivery passageway so that the portion of the transverse hinged closure contacting and forcing the deformable intraocular lens into the lens delivery passageway is aligned with the lens - delivery passageway.
In a preferred embodiment, the lens delivery passageway is linear, however, curvilinear arrangements can be utilized. Further, the lens delivery passageway may be contoured (e.g. include one or more grooves) for further folding the deformable intraocular lens as it is moved along or through the lens delivery passageway. In addition, the lens delivery passageway may taper inwardly in a direction of adv~ncçment of the deformable intraocular lens through the lens delivery passageway.
Preferably, the transverse hinged closure is configured to subst~nti~lly seal the lens delivery passageway when closed to prevent the deformable intraocular lens from esc~ping when the deformable intraocular lens is being forced through the lens delivery passageway. In some embo-limçnt~, the transverse hinged closure provides little or none co-npressive force on the deformable intraocular lens loaded into the CA 02262934 l999-02-Ol W O98/05281 PCTrUS97/13431 lens delivery passageway when the transverse hinged closure is fully closed. In other embodimçnt~, the transverse hinged closure purposely provides co-l",lessi~re forces on the deformable intraocular lens loaded into the lens delivery passageway when the transverse hinged closure is fully closed.
In other ernbodiments, the transverse hinged closure does not seal the lens delivery passageway, but instead is used to fold the lens into the lens deliverypassageway when the transverse hinged closure is being closed. If the deformableintraocular lens is sufficiently folded and captured inside the lens delivery passageway, the deformable intraocular lens can be advanced past the location of the lû transverse hinged closure, for example by the plunger tip, to a forward portion of the lens injecting apparatus. The forward portion of the lens injecting appald~us can have a completely closed lens delivery passageway portion havlng an inwardly tapering or lens folding configuration providing radially inwardly directed co~--p~essive forces to be exerted onto the deformable intraocular lens by the inner walls of the lens delivery passageway as the deformable intraocular lens is being advanced therellllough.
The transverse hinged closure is preferably arranged to stay closed when shut, and more prefeldbly positively locks when shut (e.g. releasably locks to allow reopening for inspection of lens or reuse of lens injecting apparatus, or perm~n~ntly locks prevénting reopening and reuse). In some pl~efelled emborliment~ the innersurface of the transverse hinged closure serves as an inner wall of the lens delivery passageway, pleféldbly contiguous with lt~ h~g inner wall portions of the lens injecting appal~us. Further, the inner surface of the transverse hinged closure can W O 98/05281 PCTrUS97/13431 be contoured (e.g. provided with at least one groove, protrusion, or complex contoured surface design) to f~l'ilit~t~ folding of the deformable intraocular lens when closing the transverse hinged closure and/or when advancing the deformable intraocular lens through the lens delivery passageway.
In the ~.~fel-~d two (2) piece or col.. ponent arrangement, the transverse hinged lens cartridge is held closed once inserted into the lens receiver of the lens injecting device. ~or example, a cylindrical portion of the housin~g of the lens injecting device serves as a lens cartridge receiver, and the band strength of the cylindrical portion m~in~in~ the transverse hinged lens cartridge closed when the lens cartridge is inserted into the lens cartridge receiver.
In one ple~el.ed embodiment, the transverse hinged closure includes a protrusion for forcing the center of the deformable intraocular lens downwardly while the ends of the lens are held by sides of an opening through the side of the housing to cause the deformable intraocular lens to fold into the lens delivery passageway as the transverse hinged closure is being closed.
In another prefelred embodiment, the deformable intraocular lens injecting apparatus includes a lens injecting device and a lens cartridge receiver. The lens cartridge of the present invention has a lens holding portion connected to a nozzle portion. Together, the lens holding portion and the nozzle portion define a lens delivery passageway, through which a deformable intraocular lens is introduced to the W O98/05281 PC~rUS97/13431 capsule of the eye. The longitll-lin~l axis of the lens cartridge is subs~nt~ y parallel to the lens delivery passageway.
The lens holding portion of the lens cartridge of the present invention includesa movable wall portion which is movably connected to a stationary wall portion. The S movable wall portion moves about an axis which is not parallel to the longitudinal axis of the lens cartridge. In the most preferred embodiment of the present invention, the movable wall portion swings about a transverse hinge which connects the movable wall portion to the stationary wall portion. The transverse hinge is configured in the most ~lere,l~d embodiment so that there exists a plane normal to the axis of thetransverse hinge which contains the longitudinal axis of the lens cartridge.
The lens cartridge of the present invention also includes means for releasably locking the lens cartridge in the lens injecting device. In the most p~fe~lcd embodiment of the present invention, an extension is included on the lens holding portion of the lens cartridge. The extension engages an L-shaped slot in the lens injecting device to releasably lock the lens cartridge therein.
In use, the stationary wall portion of the lens cartridge is grasped in a first hand of the user. With a second hand, the user opens the lens cartridge by pushing the movable wall portion about the transverse hinge to expose a substantial portion of the lens delivery passageway of the lens cartridge. While the lens cartridge is in an open configuration, a deformable intr~ocul~r lens is placed on the exposed lens delivery passageway. The user then closes the movable wall portion to complete the loading of the lens in the lens cartridge. The lens cartridge is then ready for assembly with the lens injecting device. Grasping the lens cartridge in the first hand and the lens injecting device in the second hand, the extension of the lens cartridge is aligned with the L-shaped slot in the lens injecting device. The lens cartridge is S then guided into slot in the lens injecting device to releasably lock the lens cartridge therein.
Thus, the user of the lens injecting apparatus of the present invention may more easily load a deformable intraocular lens into the lens cartridge. Further, the user may more easily assemble the lens cartridge with the lens injecting device. In short, the deformable intraocular lens implantation procedure is improved.
Brief Description of the Drawings Fig. 1 is a perspective view of a deformable intraocular lens injecting apparatus according to the present invention.
Fig. 2A is a side elevational view of a first plefe.led embodiment of a lens cartridge according to the present invention in a closed configuration.
Fig. 2B is a cross-sectional view of at the lens cartridge shown in Fig. 2A.
Fig. 3A is a side elevational view of the lens cartridge shown in Fig. 2A in an open configuration.
CA 02262934 l999-02-Ol W O98/05281 PCTrUS97/13431 Figure 3B is a rear end elevational view of the lens cartridge shown in Fig.
3A.
Fig. 4 is a cross-sectional view of the lens cartridge as indicated in Fig. 2A
loaded with a partially folded deformable intraocular lens.
Fig. 5 is a longitudinal cross-sectional view of the lens injecting apparatus shown in Fig. 1.
Fig. 6 is a longit~ in~l cross-sectional view of the lens cartridge shown in Figs. 2A and 2B.
Fig. 7 is a longitlldin~l cross-sectional view of a second preferred embodiment of the lens cartridge according to the present invention.
Fig. 8 is a longitlldin~l cross-sectional view of a third prerell~d embodiment of the lens cartridge according to the present invention.
Fig. 9A is a transverse cross-sectional view of the lens cartridge, as indicated in Fig.8.
Fig. 9B is a transverse cross-sectional view of the lens cartridge, as indicated in Fig.8.
Fig. 9C is a transverse cross-sectional view of the lens cartridge, as indicated in Fig.8.
Fig. 9D is a transverse cross-sectional view of the lens cartridge, as in-li~ted in Fig.8.
Fig. 10 is a longitll-lin~l cross-sectional view of a fourth preferred embodiment of the lens cartridge according to the present invention.
Fig. 11 is a transverse cross-sectional view of the lens cartridge, as indicated - in Fig. 10.
Fig. 12 is a longitu~lin~l cross-sectional view of a fifth preferred embodiment of the lens cartridge according to the present invention.
Fig. 13 is a transverse cross-sectional view of the lens cartridge, as indicated in Fig. 12.
Fig. 14 is a rear end elevational view of the lens cartridge shown in Fig. 12 with a deformable intraocular lens in a flat configuration ready to be loaded into the lens cartridge.
CA 02262934 l999-02-Ol W O98/05281 PCT~US97/13431 Fig. 15 is a rear end elevational view of the lens cartridge shown in Fig. 12 with a deformable intraocular lens in a partially folded configuration partially loaded into the lens cartridge.
Fig. 16 is a side longitudinal cross-sectional view of a sixth ~l~felled lens cartridge according to the present invention.
Fig. 17 is a transverse cross-sectional view of the lens cartridge, as indicatedin Fig.16.
- Fig. 18 is a side elevational view of a seventh preferred embodiment of the lens cartridge according to the present invention in a closed configuration.
Fig. 19 is a side elevational view of the seventh preferred embo-limçnt of the lens cartridge according to the present invention in an open configuration.
Detailed Desc~.~lion of Preferred Fn~bodinle~ts A preferred deformable intraocular lens injecting apparatus 10 according to the present invention is shown in Figs. 1 to 6.
The lens injecting apparatus 10 comprises two (2) separate main components including 1) a lens injecting device 12; and 2) a lens cartridge 14. The lens wo 98/05281 PCT/USg7/13431 injecting apparatus 10 is shown fully assembled in Fig. 1 with the lens cartridge 14 connected to the lens injecting device 12.
The lens injecting device 12 comprises a lens cartridge receiver 16 for receiving the lens cartridge 14 when assembled, and a movable plunger 18 for forcing a deformable intraocular lens through the lens cartridge 14 into the eye during the implantation operation.
The lens injecting apparatus comprises a tubular body 20 slidably accommodating the movable plunger 18. The tubular body 20 is provided with a - cone-shaped portion 22 defining the lens cartridge receiver 16. Specifically, the cone-shaped portion 22 is provided with a cylindrical round hole in the end thereof defining a cylindrical-shaped sleeve for accommodating a portion of the lens cartridge 14. The cone-shaped portion 22 is also provided with a longitu-lin~l slot 24 eYtPn-ling into a transverse slot 26 defining a "bayonet" type connection between the lens cartridge 14 and the lens injecting device 12.
The lens injecting device 12 is also provided with a finger grip 28 allowing a user to grip the lens injecting device 12 between the fore finger and rniddle finger, and the plunger 18 is provided with a thumb grip 30. The plunger 18 is provided with a spring 31 (Fig. 5) located inside the tubular body 30 and mounted on the plunger 18 of the lens injecting device 12 so that a user pushes the plunger 18 forward against an opposite spring force provided by the spring 31 when gripping the finger grip 28 with the fore finger and middle finger and pressing the thumb grip 30 with the user's thumb.
A first preferred lens cartridge 14 is shown in the closed configuration in Pigs.
2A and 2B and in the open configuration in Figs. 3A and 3B. A det~il~ longitu~lin~l cross-sectional view of the lens cartridge 14 is shown in Fig. 6.
The lens cartridge 14 comprises a lens holding portion 32 connect~l to a nozzle portion 34. Preferably, the lens cartridge 14 is a one-piece construction, for - example, made by plastic injection molding with autoclavable plastic (e.g.
polyethylene). However, the lens holding portion 32 and nozzle portion 34 can bemade as separate components and assembled together.
The lens cartridge 14 includes an extension 36 set subst~nti~lly perpendicular relative to a longitudinal axes of the lens cartridge 14 for cooperating with the transverse slot 26 in the cone-shaped portion 22. When loading the lens cartridge 14 into the lens cartridge receiver 16 of the cone-shaped portion 22, the extension 26 is directed into the longitudinal slot 24. The lens cartridge 14 is rotated relative to the lens injecting device 12 so that the extension 26 is then directed into the transverse slot 26 providing a locking "bayonet" type connection between the lens injectingdevice 12 and lens cartridge 14. This connection arrangement ensures no relativemovement between the lens injecting device 12 and the lens cartridge 14 during use of the lens injecting apparatus 10.
The lens cartridge 14 is configured to open and close for loading the deformable intraocular lens into a lens delivery passageway through the lens cartridge 14. In the embodiment shown in Figs. 1 to 3, the lens holding portion 32 includes a stationary wall portion 38 connected to a movable wall portion 40 by a transverse S hinge 42. The hinge 42 is considered "transverse", since the hinge axis is substantially perpendicular or transverse relative to a longitl1din~l axes of the lens cartridge 14.
The lens cartridge 14 is provided with a lens delivery passageway 44 e~ten(ling through the lens holding portion 32 into the nozzle portion 34. The back 10- end 46 of the lens cartridge 14 is provided with an opening 48 serving as an entrance (e.g. for plunger tip) into the lens delivery passageway 44, and the front end 50 of the lens cartridge 14 is provided with an opening 52 at nozzle tip 50 serving as an exit (e.g. for deformable intraocular lens) from the lens delivery passageway 44.
The movable wall portion 40 is provided with a protrusion 56 extenriing inwardly into the lens delivery passageway 44. The protrusion 56 is used to fold a center portion of the deformable intraocular lens into the lens delivery passageway 44 when closing the movable wall portion 40. Specific~lly, a deformable intraocular lens L (e.g. plate type IOL or three piece type) can be loaded into the lens cartridge 14 by positioning a deformable intraocular lens in a flat configuration so that opposite edge portions of the deformable intraocular lens rest on the open edges 58 of the stationary wall portion 38, as shown in Fig. 3A.
CA 02262934 l999-02-Ol When the movable wall portion 40 is being closed (e.g. by user pressing down on movable wall portion 40 with index finger while supporting stationary wall portion 38 between thumb and fore finger of other hand), the inwardly extending protrusion 56 makes contact with a center portion of the deror,l,able intraocular lens L. As the S movable wall portion 40 is further closed, the protrusion 56 forces the center portion of the deformable intraocular lens L downwardly into the lens delivery passageway 44. When the deformable intraocular lens L is fully loaded into the lens delivery passageway, the deformable intraocular lens is folded or bent and in contact with the inner surface of the stationary wall portion 38 (Fig. 4) while opposite edges of the deformable intraocular lens L fold upwardly into opposite grooves 60 provided in the inner surface of the movable wall portion 40.
The hinge 42 is a "live" type hinge molded in the plastic lens cartridge 14 so that the wall thiclcnP~ decreases to allow bending. Preferably, the wall is thinned from the outside surface of the lens cartridge 14 so that the dim~n~ions of the lens delivery passageway 44 are accurately m~int~ined to prevent any edge that could potentially scrape or otherwise damage the surface of the deformable intraocular lens, in particular the optic portion, when advancing the deformable intraocular lens through the lens delivery passageway 44. ~ltern~tively, the movable wall portion 40 and the re",~ g portion of the lens cartridge are sel)~dte co---ponents assemblytogether along a hinge (e.g. snap-fit interlocking members or hinge pin designs).
In the first embodiment of the lens cartridge 14 shown in Fig. 6, the grooves 60 extend only along the length of the movable wall portion 40. However, the grooves 60 can be extended forward further along lens delivery passageway 44 extending through the lens holding portion 32, or extended even further into the lens delivery passageway of the nozzle portion 34. Further, a single rifled groove (i.e.
spiral configuration) can be substituted for the pair of grooves 60 to cause one end of the lens to continue to fold around the remaining portion of the lens to more tightly wrap the deformable intraocular lens as it is advanced through the lens deliverypassageway.
The protrusion 56 shown in Fig. 6 tapers downwardly in the direction of the advancing deformable intraocular lens. Alternatively, the protrusion 56 can be 10- modified so as to not taper, or taper in the opposite direction. In addition, the shape of the lower surface of the protrusion 56 can be curvilinear (e.g. concave, convex) continuous, discontinuous, or a combination of shapes, as opposed to being a linear ramp-shaped structure shown in Fig. 6.
The deformable intraocular lens L is loaded into the lens cartridge 14 by positioning the deformable intraocular lens L, as shown in Fig. 3A. Spe~ific~lly, the deformable intraocular lens L bridges and rests on the edges 58 (Fig. 3B). The user then forces the movable wall portion 40 downwardly while holfiing the "~ ining portion of the lens cartridge 14 so that the protrusion 56 forces the center of the deformable intraocular lens L downwardly causing the deformable intraocular lens L
to fold along its center into the lens delivery passageway 44. The lens cartridge 14 is then loaded into the lens cartridge receiver 16 of the lens injecting device 12 by W O 98/05281 PCT~US97/13431 ~ligning the extension 36 of the lens cartridge 14 with the longitl1-1in~1 slot 24 of the lens injecting device 12. The lens cartridge 12 is force rearwardly, and then rotated to lock the extension 36 into the transverse slot 24.
A second preferred embodiment of the lens cartridge according to the present S invention is shown in Fig. 7.
The lens cartridge 14' is provided with a hinge located forward of the extension 36', as opposed to being located behind the extension 36 in the embodiment shown in Fig. 6. This configuration allows a user to grip the extension 36' between - the thumb and finger of one hand to f~ilit~te opening the movable wall portion 40'.
Optionally, the lens cartridge 14' can also be provided with an additional eYten~ion 36' below to facilitate gripping the lens cartridge 14' during opening and closing.
Further, the additional extension 36' provides added stability when the lens cartridge 14' is loaded into the lens injecting device 12.
A third embodiment of the lens cartridge 14" is shown in Fig. 8.
The lens cartridge 14" is provided with a pair of grooves 60" (See Fig. 2B) eYten-ling along the lens delivery passageway 44" in both the lens holding portion 32"
and the nozzle portion 34" (See Figs. 9A to 9B). The pair of grooves 60" terminate at a position in the nozzle portion 34", however, the pair of grooves 60" can extend further forward and terminate all the way at the nozzle tip 54". Further, the protrusion 56" is shown as having a subst~n~i~lly constant depth along its length W O98/05281 PCT~US97tl3431 except for tapering into the lens delivery passageway 44" in the nozzle portion 34"
at the front end of the protrusion 56". Alternatively, the protrusion 56" can taper linearly or curvilinearly in depth in either direction of the lens delivery passageway 44" in other design~
5A fourth embodiment of the lens cartridge 114 is shown in Figs. 10 and 11.
The lens cartridge 114 is provided with a movable wall portion 140 having a flat plate-like arrangement with a protrusion 156 extending inwardly into the lens delivery passageway 144. The flat plate-like arrangement allows for a wider hinge connection improving strength and opening stability verses the more point-like hinge 10connection of the embodiment shown in Fig. 3B. Further, the pair of grooves 160 are provided in the stationary wall portion 138 as opposed to the movable wall portion 40 in the embodiment shown in Fig. 3B. In addition, the movable wall portion 140 is provided with an indent 141 at its free end to provide a catch to f~rilit~te opening the lens cartridge 114.
15A fifth plefel-ed embodiment of the lens cartridge 114' is shown in Figs. 12 to 15.
Thé lens cartridge 114' is provided with a movable wall portion deflned by a hinged cantilever member 156' for inserting the deformable intraocular lens into the lens delivery passageway 144'. In this embodiment, even with the cantilever member 20156' closed, the lens delivery passageway 144' through the lens holding portion 132' .. . . . .
W O 98/05281 PCTfUS97/13431 remains partially open due to the pair of slots 161' located on either sides of the cantilever member 156' (See Fig. 13). The cantilever member 156' is provided with an PYtP-nd~ tip 157' to f~cilit~te lifting the cantilever member 156' for loading the deformable intraocular lens. In an alternative embodiment, the cantilever member 156' is not hinged, thus, relying on its resilience to bend along its length to provide a hinge-like action for loading the deformable intraocular lens.
A sixth preferred embodiment of the lens cartridge according to the present invention is shown in Figs. 16 and 17.
The lens cartridge 214 is configured for loading a de~ll..able intraocular lens L in a flat configuration, as shown in Fig. 17. This is accomplished by providing an oval-shaped lens delivery passageway in the lens holding portion 232. The movable wall portion 240 is provided with a non-contoured essentially flat inner top wall 261 (i.e. no pair of grooves). Alternatively, the inner wall of the movable wall portion 261 can be provided with some surface contouring to begin folding the flat loaded lens when closing the movable wall portion 261.
In this embodiment the forward end of the lens holding portion 232 and part of the nozzle portion 234 are provided with a ramp-shaped protrusion 256 dividing a pair of grooves in front of the movable wall portion 240 to f~- ilit~t~ folding of the deformable intraocular lens as it is advanced forward.
W O98/0C~281 PCT~US97/13431 A seventh embodiment of the lens cartridge according to the present invention is shown in Figs. 18 and 19.
The lens cartridge 315 is provided with an upper movable wall portion 340a and a lower movable wall portion 340b. The upper movable wall portion 340a is connected to a rem~ining portion of the lens holding portion 332 by hinge 342a, and the lower movable wall portion 340b is connected to the remaining portion of the lens holding portion by hinge 342b. Thus, this is a double-hinge type design with no stationary wall portion characteristic of the embodiment shown in Figs. 2 and 3.
~ . ,, . . . ~ . . .
This invention is directed to a deformable intraocular lens injecting apparatus including a transverse hinged closure for loading the deformable intraocular lens into a lens delivery passageway of the lens injecting apparatus. In a preferred embodiment, the lens injecting apparatus includes a lens cartridge having a transverse hinged configured to open and close for loading the deformable intraocular lens into a lens delivery passageway of the lens cartridge.
0 Background of the Invention:
The present invention is directed to surgical apparatus for the impl~nt~tion of a deforrnable intraocular lens into the eye. STAAR Surgical Company of Monrovia,California developed the concept of using a "shooter" type device for implanting a deformable intraocular lens into the eye, and supplied such devices in the United States beginning around 1986.
The STAAR "shooter" apparatus includes a sepal~te lens injecting device and a separate one-piece hinged cartridge (i.e. a lens holding portion connP,cted to a nozzle portion) that can be assembled together for operation. The hinged cartridge opens along a longitudin~l axis to allow a dero~ able intraocular lens to be loaded W O98/05281 PCTrUS97/13431 in a flat configuration in the two open halves of the lens delivery passageway. When the lens cartridge is closed, a lens delivery passageway is defined therein and the deformable intraocular lens is folded about its center into a curved folded configuration inside the lens delivery passageway. The loaded lens cartridge is then assembled with the lens injecting device which includes a lens cartridge receiver and a movable plunger for forcing the deformable intraocular lens along the lens delivery passageway into the eye.
S~ y of the Invention An object of the present invention is to provide an improved deformable intraocular lens injecting apparatus.
A second object of the present invention is to provide an improved deformable intraocular lens injecting apparatus including an improved lens cartridge.
A third object of the present invention is to provide a lens cartridge which is easy to load with a deformable intraocu}ar lens.
A fourth object of the present invention is to provide a deformable intrArlCUl~rlens injecting apparatus including a transverse hinged lens cartridge configured to open and close for loading the deformable intraocular lens into the lens cartridge.
W O98/05281 PCT~US97/13431 A fifth objeet of the present invention is to provide a deformable intraocular lens injecting apparatus including a hinged lens cartridge and a lens injeeting device including a lens cartridge receiver and a movable plunger.
A sixth object of the present invention is to provide a deformable intraocular S injecting apparatus including a lens cartridge having a lens holding portion connected to a nozzle portion, the lens holding portion including wall portions connected together by a transverse hinge and configured to be opened and closed for loading a deformable intraocular lens into the lens cartridge.
- A seventh object of the present invention is to provide a deformable intraocular lens injecting apparatus including a lens cartridge having a lens holding portion connectecl to a nozzle portion, the lens holding portion including a movable wall portion connected to a stationary wall portion by a transverse hinge.
A eighth object of the present invention is to provide a deformable intraocular lens injeeting apparatus including a lens eartridge having a lens holding portion conneeted to a nozzle portion, the lens holding portion including a movable wallportion eonneeted to a stationary wall portion by a transverse hinge, and the movable wall portion including a protrusion e~ten(ling inwardly into the lens delivery passageway for folding the deformable intraocular lens into the lens delivery passageway when elosing the movable wall portion.
CA 02262934 l999-02-Ol W O98/05281 PCT~US97/13431 The present invention is directed to a lens injecting apparatus for implanting a deformable intraocular lens into the eye. The lens injecting appal~ s is provided with a lens delivery passageway therethrough ~ccescihle by means of a transversehinged closure.
S In one l,lere~led embodiment, the lens injecting apparatus is a one (1) piece or component all~ngelllent (i.e. no lens cartridge). For example, the lens injecting apparatus comprises a housing with an injecting tip and a passageway provided therethrough, a movable plunger disposed within said housing, and a transverse hinged closure along the side of the housing to allow a deformable intraocular lens to be loaded through an opening or window through the side of the housing into the lens delivery passageway when the transverse hinged closure is opened, and seal the opening or window when the transverse hinged closure is closed.
In another preferred embodiment, the lens injecting appal~tlls is a two (2) piece or co~ onent arrangement, including 1) a lens iniecting device inr,]urling a lens cartridge receiver; and 2) a lens cartridge. For example, the lens injecting device comrrices a housing, a lens cartridge receiver provided at one end of the housing, and a movable plunger disposed in the housing. The lens cartridge, for eY~mple, is a one (1) piece or co"")ollent arrangement inrlll.1ing a lens holding portion having a transverse hinged closure connecte<l to a nozzle portion. Once a deformable intraocular lens is loaded into the lens cartridge, the lens cartridge is then loaded into the lens cartridge receiver of the lens injecting device.
CA 02262934 l999-02-Ol W O98/05281 PCTrU~97/13431 The transverse hinged closure arrangement utilized in the lens injecting apparatus according to the present invention orients the hinge transverse relative to the orientation of the lens delivery passageway. Specifically, the axis of the hinge is not parallel with the longit~ldin~l axis of the lens delivery passageway. Preferably, the axis of the hinge is set at forty-five (45) to ninety (90) degrees relative to the longitudin~l axis of the lens delivery passageway. An angle of ninety (90) degrees is most preferred, especially in embodiments where the transverse hinged closure is utilized for folding the deformable intraocular lens into the lens delivery passageway so that the portion of the transverse hinged closure contacting and forcing the deformable intraocular lens into the lens delivery passageway is aligned with the lens - delivery passageway.
In a preferred embodiment, the lens delivery passageway is linear, however, curvilinear arrangements can be utilized. Further, the lens delivery passageway may be contoured (e.g. include one or more grooves) for further folding the deformable intraocular lens as it is moved along or through the lens delivery passageway. In addition, the lens delivery passageway may taper inwardly in a direction of adv~ncçment of the deformable intraocular lens through the lens delivery passageway.
Preferably, the transverse hinged closure is configured to subst~nti~lly seal the lens delivery passageway when closed to prevent the deformable intraocular lens from esc~ping when the deformable intraocular lens is being forced through the lens delivery passageway. In some embo-limçnt~, the transverse hinged closure provides little or none co-npressive force on the deformable intraocular lens loaded into the CA 02262934 l999-02-Ol W O98/05281 PCTrUS97/13431 lens delivery passageway when the transverse hinged closure is fully closed. In other embodimçnt~, the transverse hinged closure purposely provides co-l",lessi~re forces on the deformable intraocular lens loaded into the lens delivery passageway when the transverse hinged closure is fully closed.
In other ernbodiments, the transverse hinged closure does not seal the lens delivery passageway, but instead is used to fold the lens into the lens deliverypassageway when the transverse hinged closure is being closed. If the deformableintraocular lens is sufficiently folded and captured inside the lens delivery passageway, the deformable intraocular lens can be advanced past the location of the lû transverse hinged closure, for example by the plunger tip, to a forward portion of the lens injecting apparatus. The forward portion of the lens injecting appald~us can have a completely closed lens delivery passageway portion havlng an inwardly tapering or lens folding configuration providing radially inwardly directed co~--p~essive forces to be exerted onto the deformable intraocular lens by the inner walls of the lens delivery passageway as the deformable intraocular lens is being advanced therellllough.
The transverse hinged closure is preferably arranged to stay closed when shut, and more prefeldbly positively locks when shut (e.g. releasably locks to allow reopening for inspection of lens or reuse of lens injecting apparatus, or perm~n~ntly locks prevénting reopening and reuse). In some pl~efelled emborliment~ the innersurface of the transverse hinged closure serves as an inner wall of the lens delivery passageway, pleféldbly contiguous with lt~ h~g inner wall portions of the lens injecting appal~us. Further, the inner surface of the transverse hinged closure can W O 98/05281 PCTrUS97/13431 be contoured (e.g. provided with at least one groove, protrusion, or complex contoured surface design) to f~l'ilit~t~ folding of the deformable intraocular lens when closing the transverse hinged closure and/or when advancing the deformable intraocular lens through the lens delivery passageway.
In the ~.~fel-~d two (2) piece or col.. ponent arrangement, the transverse hinged lens cartridge is held closed once inserted into the lens receiver of the lens injecting device. ~or example, a cylindrical portion of the housin~g of the lens injecting device serves as a lens cartridge receiver, and the band strength of the cylindrical portion m~in~in~ the transverse hinged lens cartridge closed when the lens cartridge is inserted into the lens cartridge receiver.
In one ple~el.ed embodiment, the transverse hinged closure includes a protrusion for forcing the center of the deformable intraocular lens downwardly while the ends of the lens are held by sides of an opening through the side of the housing to cause the deformable intraocular lens to fold into the lens delivery passageway as the transverse hinged closure is being closed.
In another prefelred embodiment, the deformable intraocular lens injecting apparatus includes a lens injecting device and a lens cartridge receiver. The lens cartridge of the present invention has a lens holding portion connected to a nozzle portion. Together, the lens holding portion and the nozzle portion define a lens delivery passageway, through which a deformable intraocular lens is introduced to the W O98/05281 PC~rUS97/13431 capsule of the eye. The longitll-lin~l axis of the lens cartridge is subs~nt~ y parallel to the lens delivery passageway.
The lens holding portion of the lens cartridge of the present invention includesa movable wall portion which is movably connected to a stationary wall portion. The S movable wall portion moves about an axis which is not parallel to the longitudinal axis of the lens cartridge. In the most preferred embodiment of the present invention, the movable wall portion swings about a transverse hinge which connects the movable wall portion to the stationary wall portion. The transverse hinge is configured in the most ~lere,l~d embodiment so that there exists a plane normal to the axis of thetransverse hinge which contains the longitudinal axis of the lens cartridge.
The lens cartridge of the present invention also includes means for releasably locking the lens cartridge in the lens injecting device. In the most p~fe~lcd embodiment of the present invention, an extension is included on the lens holding portion of the lens cartridge. The extension engages an L-shaped slot in the lens injecting device to releasably lock the lens cartridge therein.
In use, the stationary wall portion of the lens cartridge is grasped in a first hand of the user. With a second hand, the user opens the lens cartridge by pushing the movable wall portion about the transverse hinge to expose a substantial portion of the lens delivery passageway of the lens cartridge. While the lens cartridge is in an open configuration, a deformable intr~ocul~r lens is placed on the exposed lens delivery passageway. The user then closes the movable wall portion to complete the loading of the lens in the lens cartridge. The lens cartridge is then ready for assembly with the lens injecting device. Grasping the lens cartridge in the first hand and the lens injecting device in the second hand, the extension of the lens cartridge is aligned with the L-shaped slot in the lens injecting device. The lens cartridge is S then guided into slot in the lens injecting device to releasably lock the lens cartridge therein.
Thus, the user of the lens injecting apparatus of the present invention may more easily load a deformable intraocular lens into the lens cartridge. Further, the user may more easily assemble the lens cartridge with the lens injecting device. In short, the deformable intraocular lens implantation procedure is improved.
Brief Description of the Drawings Fig. 1 is a perspective view of a deformable intraocular lens injecting apparatus according to the present invention.
Fig. 2A is a side elevational view of a first plefe.led embodiment of a lens cartridge according to the present invention in a closed configuration.
Fig. 2B is a cross-sectional view of at the lens cartridge shown in Fig. 2A.
Fig. 3A is a side elevational view of the lens cartridge shown in Fig. 2A in an open configuration.
CA 02262934 l999-02-Ol W O98/05281 PCTrUS97/13431 Figure 3B is a rear end elevational view of the lens cartridge shown in Fig.
3A.
Fig. 4 is a cross-sectional view of the lens cartridge as indicated in Fig. 2A
loaded with a partially folded deformable intraocular lens.
Fig. 5 is a longitudinal cross-sectional view of the lens injecting apparatus shown in Fig. 1.
Fig. 6 is a longit~ in~l cross-sectional view of the lens cartridge shown in Figs. 2A and 2B.
Fig. 7 is a longitlldin~l cross-sectional view of a second preferred embodiment of the lens cartridge according to the present invention.
Fig. 8 is a longitlldin~l cross-sectional view of a third prerell~d embodiment of the lens cartridge according to the present invention.
Fig. 9A is a transverse cross-sectional view of the lens cartridge, as indicated in Fig.8.
Fig. 9B is a transverse cross-sectional view of the lens cartridge, as indicated in Fig.8.
Fig. 9C is a transverse cross-sectional view of the lens cartridge, as indicated in Fig.8.
Fig. 9D is a transverse cross-sectional view of the lens cartridge, as in-li~ted in Fig.8.
Fig. 10 is a longitll-lin~l cross-sectional view of a fourth preferred embodiment of the lens cartridge according to the present invention.
Fig. 11 is a transverse cross-sectional view of the lens cartridge, as indicated - in Fig. 10.
Fig. 12 is a longitu~lin~l cross-sectional view of a fifth preferred embodiment of the lens cartridge according to the present invention.
Fig. 13 is a transverse cross-sectional view of the lens cartridge, as indicated in Fig. 12.
Fig. 14 is a rear end elevational view of the lens cartridge shown in Fig. 12 with a deformable intraocular lens in a flat configuration ready to be loaded into the lens cartridge.
CA 02262934 l999-02-Ol W O98/05281 PCT~US97/13431 Fig. 15 is a rear end elevational view of the lens cartridge shown in Fig. 12 with a deformable intraocular lens in a partially folded configuration partially loaded into the lens cartridge.
Fig. 16 is a side longitudinal cross-sectional view of a sixth ~l~felled lens cartridge according to the present invention.
Fig. 17 is a transverse cross-sectional view of the lens cartridge, as indicatedin Fig.16.
- Fig. 18 is a side elevational view of a seventh preferred embodiment of the lens cartridge according to the present invention in a closed configuration.
Fig. 19 is a side elevational view of the seventh preferred embo-limçnt of the lens cartridge according to the present invention in an open configuration.
Detailed Desc~.~lion of Preferred Fn~bodinle~ts A preferred deformable intraocular lens injecting apparatus 10 according to the present invention is shown in Figs. 1 to 6.
The lens injecting apparatus 10 comprises two (2) separate main components including 1) a lens injecting device 12; and 2) a lens cartridge 14. The lens wo 98/05281 PCT/USg7/13431 injecting apparatus 10 is shown fully assembled in Fig. 1 with the lens cartridge 14 connected to the lens injecting device 12.
The lens injecting device 12 comprises a lens cartridge receiver 16 for receiving the lens cartridge 14 when assembled, and a movable plunger 18 for forcing a deformable intraocular lens through the lens cartridge 14 into the eye during the implantation operation.
The lens injecting apparatus comprises a tubular body 20 slidably accommodating the movable plunger 18. The tubular body 20 is provided with a - cone-shaped portion 22 defining the lens cartridge receiver 16. Specifically, the cone-shaped portion 22 is provided with a cylindrical round hole in the end thereof defining a cylindrical-shaped sleeve for accommodating a portion of the lens cartridge 14. The cone-shaped portion 22 is also provided with a longitu-lin~l slot 24 eYtPn-ling into a transverse slot 26 defining a "bayonet" type connection between the lens cartridge 14 and the lens injecting device 12.
The lens injecting device 12 is also provided with a finger grip 28 allowing a user to grip the lens injecting device 12 between the fore finger and rniddle finger, and the plunger 18 is provided with a thumb grip 30. The plunger 18 is provided with a spring 31 (Fig. 5) located inside the tubular body 30 and mounted on the plunger 18 of the lens injecting device 12 so that a user pushes the plunger 18 forward against an opposite spring force provided by the spring 31 when gripping the finger grip 28 with the fore finger and middle finger and pressing the thumb grip 30 with the user's thumb.
A first preferred lens cartridge 14 is shown in the closed configuration in Pigs.
2A and 2B and in the open configuration in Figs. 3A and 3B. A det~il~ longitu~lin~l cross-sectional view of the lens cartridge 14 is shown in Fig. 6.
The lens cartridge 14 comprises a lens holding portion 32 connect~l to a nozzle portion 34. Preferably, the lens cartridge 14 is a one-piece construction, for - example, made by plastic injection molding with autoclavable plastic (e.g.
polyethylene). However, the lens holding portion 32 and nozzle portion 34 can bemade as separate components and assembled together.
The lens cartridge 14 includes an extension 36 set subst~nti~lly perpendicular relative to a longitudinal axes of the lens cartridge 14 for cooperating with the transverse slot 26 in the cone-shaped portion 22. When loading the lens cartridge 14 into the lens cartridge receiver 16 of the cone-shaped portion 22, the extension 26 is directed into the longitudinal slot 24. The lens cartridge 14 is rotated relative to the lens injecting device 12 so that the extension 26 is then directed into the transverse slot 26 providing a locking "bayonet" type connection between the lens injectingdevice 12 and lens cartridge 14. This connection arrangement ensures no relativemovement between the lens injecting device 12 and the lens cartridge 14 during use of the lens injecting apparatus 10.
The lens cartridge 14 is configured to open and close for loading the deformable intraocular lens into a lens delivery passageway through the lens cartridge 14. In the embodiment shown in Figs. 1 to 3, the lens holding portion 32 includes a stationary wall portion 38 connected to a movable wall portion 40 by a transverse S hinge 42. The hinge 42 is considered "transverse", since the hinge axis is substantially perpendicular or transverse relative to a longitl1din~l axes of the lens cartridge 14.
The lens cartridge 14 is provided with a lens delivery passageway 44 e~ten(ling through the lens holding portion 32 into the nozzle portion 34. The back 10- end 46 of the lens cartridge 14 is provided with an opening 48 serving as an entrance (e.g. for plunger tip) into the lens delivery passageway 44, and the front end 50 of the lens cartridge 14 is provided with an opening 52 at nozzle tip 50 serving as an exit (e.g. for deformable intraocular lens) from the lens delivery passageway 44.
The movable wall portion 40 is provided with a protrusion 56 extenriing inwardly into the lens delivery passageway 44. The protrusion 56 is used to fold a center portion of the deformable intraocular lens into the lens delivery passageway 44 when closing the movable wall portion 40. Specific~lly, a deformable intraocular lens L (e.g. plate type IOL or three piece type) can be loaded into the lens cartridge 14 by positioning a deformable intraocular lens in a flat configuration so that opposite edge portions of the deformable intraocular lens rest on the open edges 58 of the stationary wall portion 38, as shown in Fig. 3A.
CA 02262934 l999-02-Ol When the movable wall portion 40 is being closed (e.g. by user pressing down on movable wall portion 40 with index finger while supporting stationary wall portion 38 between thumb and fore finger of other hand), the inwardly extending protrusion 56 makes contact with a center portion of the deror,l,able intraocular lens L. As the S movable wall portion 40 is further closed, the protrusion 56 forces the center portion of the deformable intraocular lens L downwardly into the lens delivery passageway 44. When the deformable intraocular lens L is fully loaded into the lens delivery passageway, the deformable intraocular lens is folded or bent and in contact with the inner surface of the stationary wall portion 38 (Fig. 4) while opposite edges of the deformable intraocular lens L fold upwardly into opposite grooves 60 provided in the inner surface of the movable wall portion 40.
The hinge 42 is a "live" type hinge molded in the plastic lens cartridge 14 so that the wall thiclcnP~ decreases to allow bending. Preferably, the wall is thinned from the outside surface of the lens cartridge 14 so that the dim~n~ions of the lens delivery passageway 44 are accurately m~int~ined to prevent any edge that could potentially scrape or otherwise damage the surface of the deformable intraocular lens, in particular the optic portion, when advancing the deformable intraocular lens through the lens delivery passageway 44. ~ltern~tively, the movable wall portion 40 and the re",~ g portion of the lens cartridge are sel)~dte co---ponents assemblytogether along a hinge (e.g. snap-fit interlocking members or hinge pin designs).
In the first embodiment of the lens cartridge 14 shown in Fig. 6, the grooves 60 extend only along the length of the movable wall portion 40. However, the grooves 60 can be extended forward further along lens delivery passageway 44 extending through the lens holding portion 32, or extended even further into the lens delivery passageway of the nozzle portion 34. Further, a single rifled groove (i.e.
spiral configuration) can be substituted for the pair of grooves 60 to cause one end of the lens to continue to fold around the remaining portion of the lens to more tightly wrap the deformable intraocular lens as it is advanced through the lens deliverypassageway.
The protrusion 56 shown in Fig. 6 tapers downwardly in the direction of the advancing deformable intraocular lens. Alternatively, the protrusion 56 can be 10- modified so as to not taper, or taper in the opposite direction. In addition, the shape of the lower surface of the protrusion 56 can be curvilinear (e.g. concave, convex) continuous, discontinuous, or a combination of shapes, as opposed to being a linear ramp-shaped structure shown in Fig. 6.
The deformable intraocular lens L is loaded into the lens cartridge 14 by positioning the deformable intraocular lens L, as shown in Fig. 3A. Spe~ific~lly, the deformable intraocular lens L bridges and rests on the edges 58 (Fig. 3B). The user then forces the movable wall portion 40 downwardly while holfiing the "~ ining portion of the lens cartridge 14 so that the protrusion 56 forces the center of the deformable intraocular lens L downwardly causing the deformable intraocular lens L
to fold along its center into the lens delivery passageway 44. The lens cartridge 14 is then loaded into the lens cartridge receiver 16 of the lens injecting device 12 by W O 98/05281 PCT~US97/13431 ~ligning the extension 36 of the lens cartridge 14 with the longitl1-1in~1 slot 24 of the lens injecting device 12. The lens cartridge 12 is force rearwardly, and then rotated to lock the extension 36 into the transverse slot 24.
A second preferred embodiment of the lens cartridge according to the present S invention is shown in Fig. 7.
The lens cartridge 14' is provided with a hinge located forward of the extension 36', as opposed to being located behind the extension 36 in the embodiment shown in Fig. 6. This configuration allows a user to grip the extension 36' between - the thumb and finger of one hand to f~ilit~te opening the movable wall portion 40'.
Optionally, the lens cartridge 14' can also be provided with an additional eYten~ion 36' below to facilitate gripping the lens cartridge 14' during opening and closing.
Further, the additional extension 36' provides added stability when the lens cartridge 14' is loaded into the lens injecting device 12.
A third embodiment of the lens cartridge 14" is shown in Fig. 8.
The lens cartridge 14" is provided with a pair of grooves 60" (See Fig. 2B) eYten-ling along the lens delivery passageway 44" in both the lens holding portion 32"
and the nozzle portion 34" (See Figs. 9A to 9B). The pair of grooves 60" terminate at a position in the nozzle portion 34", however, the pair of grooves 60" can extend further forward and terminate all the way at the nozzle tip 54". Further, the protrusion 56" is shown as having a subst~n~i~lly constant depth along its length W O98/05281 PCT~US97tl3431 except for tapering into the lens delivery passageway 44" in the nozzle portion 34"
at the front end of the protrusion 56". Alternatively, the protrusion 56" can taper linearly or curvilinearly in depth in either direction of the lens delivery passageway 44" in other design~
5A fourth embodiment of the lens cartridge 114 is shown in Figs. 10 and 11.
The lens cartridge 114 is provided with a movable wall portion 140 having a flat plate-like arrangement with a protrusion 156 extending inwardly into the lens delivery passageway 144. The flat plate-like arrangement allows for a wider hinge connection improving strength and opening stability verses the more point-like hinge 10connection of the embodiment shown in Fig. 3B. Further, the pair of grooves 160 are provided in the stationary wall portion 138 as opposed to the movable wall portion 40 in the embodiment shown in Fig. 3B. In addition, the movable wall portion 140 is provided with an indent 141 at its free end to provide a catch to f~rilit~te opening the lens cartridge 114.
15A fifth plefel-ed embodiment of the lens cartridge 114' is shown in Figs. 12 to 15.
Thé lens cartridge 114' is provided with a movable wall portion deflned by a hinged cantilever member 156' for inserting the deformable intraocular lens into the lens delivery passageway 144'. In this embodiment, even with the cantilever member 20156' closed, the lens delivery passageway 144' through the lens holding portion 132' .. . . . .
W O 98/05281 PCTfUS97/13431 remains partially open due to the pair of slots 161' located on either sides of the cantilever member 156' (See Fig. 13). The cantilever member 156' is provided with an PYtP-nd~ tip 157' to f~cilit~te lifting the cantilever member 156' for loading the deformable intraocular lens. In an alternative embodiment, the cantilever member 156' is not hinged, thus, relying on its resilience to bend along its length to provide a hinge-like action for loading the deformable intraocular lens.
A sixth preferred embodiment of the lens cartridge according to the present invention is shown in Figs. 16 and 17.
The lens cartridge 214 is configured for loading a de~ll..able intraocular lens L in a flat configuration, as shown in Fig. 17. This is accomplished by providing an oval-shaped lens delivery passageway in the lens holding portion 232. The movable wall portion 240 is provided with a non-contoured essentially flat inner top wall 261 (i.e. no pair of grooves). Alternatively, the inner wall of the movable wall portion 261 can be provided with some surface contouring to begin folding the flat loaded lens when closing the movable wall portion 261.
In this embodiment the forward end of the lens holding portion 232 and part of the nozzle portion 234 are provided with a ramp-shaped protrusion 256 dividing a pair of grooves in front of the movable wall portion 240 to f~- ilit~t~ folding of the deformable intraocular lens as it is advanced forward.
W O98/0C~281 PCT~US97/13431 A seventh embodiment of the lens cartridge according to the present invention is shown in Figs. 18 and 19.
The lens cartridge 315 is provided with an upper movable wall portion 340a and a lower movable wall portion 340b. The upper movable wall portion 340a is connected to a rem~ining portion of the lens holding portion 332 by hinge 342a, and the lower movable wall portion 340b is connected to the remaining portion of the lens holding portion by hinge 342b. Thus, this is a double-hinge type design with no stationary wall portion characteristic of the embodiment shown in Figs. 2 and 3.
~ . ,, . . . ~ . . .
Claims (34)
1. A deformable intraocular lens injecting apparatus, comprising:
a lens cartridge including a lens holding portion connected to a nozzle portion, said lens cartridge having a lens delivery passageway extending through said lens holding portion into said nozzle portion, said lens holding portion including a stationary wall portion and a movable wall portion, said movable wall portion is connected to said stationary wall portion by a transverse hinge oriented substantially perpendicular relative to said lens delivery passageway and configured to allow the lens holding portion to be opened to load the deformable intraocular lens into the stationary wall portion and then closed to enclose the deformable intraocular lens inside the lens delivery passageway.
a lens cartridge including a lens holding portion connected to a nozzle portion, said lens cartridge having a lens delivery passageway extending through said lens holding portion into said nozzle portion, said lens holding portion including a stationary wall portion and a movable wall portion, said movable wall portion is connected to said stationary wall portion by a transverse hinge oriented substantially perpendicular relative to said lens delivery passageway and configured to allow the lens holding portion to be opened to load the deformable intraocular lens into the stationary wall portion and then closed to enclose the deformable intraocular lens inside the lens delivery passageway.
2. An apparatus according to Claim 1, wherein said transverse hinge is a live hinge.
3. An apparatus according to Claim 2, wherein said transverse hinge is a multiple component hinge.
4. An apparatus according to Claim 1, wherein said lens holding portion is tubular.
5. An apparatus according to Claim 4, wherein said stationary wall portion is located along a bottom portion of said lens cartridge and said movable wall portion is located along a top portion of said lens cartridge allowing the deformable intraocular lens to be cradled by said stationary wall portion when loaded in said lens holding portion and then covered by said movable wall portion.
6. An apparatus according to Claim 4, wherein said movable wall portion is a smaller circumferential segment and said stationary wall portion is a larger circumferential segment of said tubular lens holding portion.
7. An apparatus according to Claim 5, wherein said movable wall portion is a smaller circumferential segment and said stationary wall portion is a larger circumferential segment of said tubular lens holding portion.
8. An apparatus according to Claim 1, wherein said movable wall portion includes a movable end and a hinged end.
9. An apparatus according to Claim 8, wherein said movable end of said movable wall portion is positioned at a back end of said lens cartridge and said transverse hinge is located forward of said back end of said lens cartridge to allow the lens holding portion to be open from said back end of said lens cartridge.
10. An apparatus according to Claim 4, wherein said movable wall portion includes a movable end and a hinged end.
11. An apparatus according to Claim 10, wherein said movable end of said movable wall portion is positioned at a back end of said lens cartridge and said transverse hinge is located forward of said back end of said lens cartridge to allow the lens holding portion to be open from said back end of said lens cartridge.
12. An apparatus according to Claim 1, wherein said movable wall portion tapers downwardly along a width of said movable wall portion from a free end of said movable wall portion towards said transverse hinge.
13. An apparatus according to Claim 11, wherein said movable wall portion tapers downwardly along a width of said movable wall portion from a free end of said movable wall portion towards said transverse hinge.
14. An apparatus according to Claim 13, wherein said movable wall portions include longitudinal edges and wherein said longitudinal edges of said movable wall portion are linear.
15. An apparatus according to Claim 13, wherein said movable wall portions include longitudinal edges and wherein said longitudinal edges of said movable wall portion are curvilinear.
16. An apparatus according to Claim 15, wherein said curvilinear edges are arc-shaped segments extending outwardly along lengths of said curvilinear edges.
17. An apparatus according to Claim 1, wherein said movable wall portion releasably locks with said stationary wall portion when closed.
18. An apparatus according to Claim 1, wherein said movable wall portion substantially permanently locks with said stationary wall portion when closed.
19. An apparatus according to Claim 1, wherein said lens delivery passageway is contoured for folding or further folding the deformable intraocular lens when the deformable intraocular lens is being advanced through the lens delivery passageway.
20. An apparatus according to Claim 19, wherein said lens delivery passageway includes at least one groove.
21. An apparatus according to Claim 20, wherein said lens delivery passageway includes a pair of grooves separated by an inwardly extending protrusion.
22. An apparatus according to Claim 21, wherein said grooves taper downwardly inside the lens delivery passageway in a direction of advancing the deformable intraocular lens.
23. An apparatus according to Claim 22, wherein said grooves exist in only a portion of the lens delivery passageway extending through said lens holding portion of said lens cartridge.
24. An apparatus according to Claim 22, wherein said grooves exist in the lens delivery passageway through said lens holding portion and extend into said nozzle portion of said lens cartridge.
25. An apparatus according to Claim 21, wherein said pair of grooves are located in the inner surface of the movable wall portion.
26. An apparatus according to Claim 21, wherein said pair of grooves are located in the inner surface of the stationary wall portion.
27. An apparatus according to Claim 1, wherein said lens delivery passageway inwardly tapers in a direction of advancing the deformable intraocular lens.
28. An apparatus according to Claim 19, wherein said lens delivery passageway inwardly tapers in a direction of advancing the deformable intraocular lens.
29. An apparatus according to Claim 20, wherein said lens delivery passageway inwardly tapers in a direction of advancing the deformable intraocular lens.
30. An apparatus according to Claim 1, further including a lens injecting device including a lens cartridge receiver and a movable plunger.
31. An apparatus according to Claim 1, wherein said movable wall portion is configured for at least partially folding the deformable intraocular lens when closing.
32. An apparatus according to Claim 31, wherein said movable wall portion includes a protrusion extending inwardly into said lens delivery passageway.
33. An apparatus according to Claim 32, wherein said movable wall portion is configured for forcing a center portion of the deformable intraocular lens inwardly into said lens delivery passageway to fold the lens into the lens delivery passageway and wherein the deformable intraocular lens includes opposite edges.
34. An apparatus according to Claim 33, wherein said lens cartridge is configured so that the opposite edges of the deformable intraocular lens are supported by edges of the stationary wall portion while said inwardly extending protrusion of the movable wall portions acts on the center of the deformable intraocular lens when closing the movable wall portion for effectively folding the deformable intraocular lens into the lens delivery passageway.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/691,492 US5876406A (en) | 1996-08-02 | 1996-08-02 | Deformable intraocular lens injecting apparatus with transverse hinged lens cartridge |
| US08/691,492 | 1996-08-02 | ||
| PCT/US1997/013431 WO1998005281A1 (en) | 1996-08-02 | 1997-07-31 | Deformable intraocular lens injecting apparatus with transverse hinged lens cartridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2262934A1 true CA2262934A1 (en) | 1998-02-12 |
Family
ID=24776747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002262934A Abandoned CA2262934A1 (en) | 1996-08-02 | 1997-07-31 | Deformable intraocular lens injecting apparatus with transverse hinged lens cartridge |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5876406A (en) |
| EP (1) | EP0928176A4 (en) |
| JP (1) | JP4035169B2 (en) |
| KR (1) | KR20000030016A (en) |
| CN (1) | CN1226151A (en) |
| AU (1) | AU719064B2 (en) |
| CA (1) | CA2262934A1 (en) |
| WO (1) | WO1998005281A1 (en) |
Families Citing this family (77)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5810834A (en) * | 1996-10-07 | 1998-09-22 | Chiron Vision Corporation | Tip formation for inserting a flexible membrane into an eye |
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| US4747404A (en) * | 1986-11-10 | 1988-05-31 | Kresge Eye Institute Of Wayne State University | Foldable intraocular lens inserter |
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-
1996
- 1996-08-02 US US08/691,492 patent/US5876406A/en not_active Expired - Lifetime
-
1997
- 1997-07-31 KR KR1019997001733A patent/KR20000030016A/en not_active Application Discontinuation
- 1997-07-31 CA CA002262934A patent/CA2262934A1/en not_active Abandoned
- 1997-07-31 WO PCT/US1997/013431 patent/WO1998005281A1/en not_active Application Discontinuation
- 1997-07-31 JP JP50804998A patent/JP4035169B2/en not_active Expired - Lifetime
- 1997-07-31 EP EP97935220A patent/EP0928176A4/en not_active Withdrawn
- 1997-07-31 CN CN97196806A patent/CN1226151A/en active Pending
- 1997-07-31 AU AU38210/97A patent/AU719064B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP0928176A1 (en) | 1999-07-14 |
| JP2000516488A (en) | 2000-12-12 |
| WO1998005281A1 (en) | 1998-02-12 |
| US5876406A (en) | 1999-03-02 |
| AU719064B2 (en) | 2000-05-04 |
| AU3821097A (en) | 1998-02-25 |
| CN1226151A (en) | 1999-08-18 |
| EP0928176A4 (en) | 2000-04-26 |
| KR20000030016A (en) | 2000-05-25 |
| JP4035169B2 (en) | 2008-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |