CN1691925A - Sarfarazi elliptical accommodative intraocular lens for small incision surgery - Google Patents

Abstract

An elliptical accommodative intraocular lens assembly is provided for placement in the evacuated capsular bag of the posterior chamber of an eye after a small incision capsulorhexis, such that as the capsular bag is pulled and released by ciliary muscles, the lenses approach and withdraw from each other to provide focal accommodation.

Description

The oval modulability intra-ocular lens of the SARFARAZI of small incision surgery

Invention field

Intra-ocular lens in the capsule bag of camera oculi posterior after the capsulorhexis before the present invention relates to be implanted in.Crystalline lens utilizes the lenticular refracting power of ciliary muscle modulability after implantation.

Background of invention

Cataractopiesis is prevailing eye surgical operation in the U.S..Extracapsular cataract extraction comprises the part (preceding capsulorhexis) of the preceding capsule of excision, then removes nuclear.On the other hand, can insert probe and use ultrasonic vibration, from the capsule bag, substance of lens is transferred to mammilary bodies (phacoemulsification) then by perfusion and sucking-off by preceding capsule.After removing natural lens, image no longer focuses on the retina, must provide alternative crystalline lens that image is clearly just arranged.Alternative crystalline lens can be glasses, contact lens or intra-ocular lens.Wherein, the intra-ocular lens most convenient also makes image non-warping, and still, for lenticular arrangement, the size of otch is subjected to the control of implant size and does not need to remove natural lens.But alternative crystalline lens lacks natural lens and far and near object is regulated the ability that focuses on.

When the people saw object, light reflected from object, by cornea, aqueous humor, entered crystalline lens through pupil, and crystalline lens converges to light on the retina through vitreous body.In order clearly to focus on nearly thing, light must be rolled over Qu Gengduo.In order to realize this purpose, it is more crooked and thicker that crystalline lens becomes.Major part in this variation is come comfortable its equator tractive and is loosened the capsule bag.The equator of capsule bag is connected to ciliary muscle by the fibril that is called as the little band of neat grace, and the neat little band of grace is connected to ciliary muscle successively.When seeing distant objects, ciliary muscles relax and extension, thereby spur little band, capsule and crystalline lens are flattened.When seeing near objects, the nervous and slight inwardly mobile muscle of contraction of ciliary muscle also loosens the little band of pulling, makes the capsule bag become more crooked and thicker from front to back.Crystalline lens itself is by interlaced fibrous, and these fibers influence lenticular elasticity activity, and crystalline lens changes shape, and fiber changes curvature.When people's ageing, lenticular regulating power descends along with the variation of eyes.Relevant with old age eye changes and comprises and lenticularly thicken, the not increase of solubilising protein quantity in the crystalline lens, move away the equator and the Vitrea partial liquefaction of capsule at the junction point of little band.

Crystalline lens is made up of transparency material, and transparency material has the shape of rotationally symmetric body, as spheroid.The degree of crook on surface and bending radius and focal length are inversely proportional.Parallel rays is reflecting the back scattering by convex surface refraction post-concentration with by concave surface.Lenticular refracting power depends on the refractive index of substance of lens and crystalline lens bending.Simple crystalline lens has the two sides, and curvature is respectively arranged.By two crystalline lenses that specific distance is separated, can be considered to have a thick crystalline lens of two focal lengths and two principal planes.The focal length of system be they focal length (f1, f2) divided by they focal length and deduct that distance (d) between them obtains, promptly

F＝(f1f2)/(f1＝f2-d)

When the space between crystalline lens is not a vacuum but when comprising material, the numerical value that deducts from the focal length sum is divided by the refractive index of this material.

F＝(f1f2)/(f1+f2-d/n)

The refracting power of intraocular lens system is represented by the inverse of focal length.By using two fixedly crystalline lenses and change distance between them, can make up a pancratic system.If the rate in the wrong of one or two lens surface increases along with the increase of distance between crystalline lens, reduce along with the minimizing of distance between crystalline lens, the variation of focal length has then increased.

Provide focus adjustment to do many effort to eyes.Wherein modal is bifocus or multifocal lens.These are used to glasses, contact lens and intra-ocular lens, depend on the direction of focusing but its shortcoming is focal adjustments.

U.S. Patent No. 4,254,509 disclose the crystalline lens that utilizes ciliary muscle.But this crystalline lens places the cup of eye.This implant sometimes with complication as damage to the blood vessel iris.

U.S. Patent No. 4,253,199 disclose and have been directly connected to capsulociliary crystalline lens.This crystalline lens is in more natural position, but requires to be sewn onto on the corpus ciliare, has in the operation bulk break and from the risk of bleeding of sewing up.

The U.S. Patent No. 4,685,922 that this paper quotes as a reference discloses the cryptomere intraocular lens system, and its refracting power can be changed.This change is permanent, with breaking of chamber.

U.S. Patent No. 4,790,847 provide the single crystalline lenses that use deflection tactile capsule pocket planting in rear portion to go into, it is connected with the capsule bag under the line, when ciliary muscle contraction when loosening forward and mobile backward crystalline lens.

The U.S. Patent No. 4,842,601 that this paper quotes as a reference discloses the deformable crystalline lens assembly of two parts that is used to implant the capsule bag.This crystalline lens allows to divide refracting power and the little band that utilizes on capsulociliary effect and the capsule bag.This intraocular lens system assembles after insertion.

U.S. Patent No. 4,892,543 disclose another places two crystalline lens assemblys of chamber, back, may be in the bag that the capsule bag is not moved.This crystalline lens allows to divide refracting power and imports variable focal length in a crystalline lens by lenticular telescopic wall of compressing therein facing to second fixing lenticular convex surface between two crystalline lenses.This requires the first and second lenticular positions approaching substantially.

The U.S. Patent No. 4,932,966 that this paper quotes as a reference provides the modulability crystalline lens, and wherein two crystalline lenses connect the capsule that centers on full of liquid in the periphery, realize regulating by selectively changing CF body pressure.A crystalline lens is hard basic crystalline lens, and another crystalline lens is the film sample, and the equatorial diameter of crystalline lens assembly is substantially according to the pupil diameter assembling that enlarges and by capsule or sense of touch support.

The summary of invention

The invention provides dual and thick optics crystalline lens, can in simple overall structure, regulate focus at distance range.It utilizes corpus ciliare that focus is regulated in the natural shaping of eye capsule.Embodiment provides the little otch of composition to insert the focusing of natural center and raising.

The description of accompanying drawing

Fig. 1 is the cross-sectional view with the lenticular eye of modulability of the present invention.

Fig. 2 is the skiagraph of eye.

Fig. 3 is the part sectional drawing of intra-ocular lens of the present invention when eye focuses near object.

Fig. 4 is the part sectional drawing of the intra-ocular lens of Fig. 3 when eye focuses on far object.

Fig. 5 shows the part sectional drawing of selecting embodiment.

Fig. 6 is the side schematic view of natural lens.

Fig. 7 is the side view of the thick crystalline lens embodiment of this lens composition.

Fig. 8 is the perspective cross-sectional view of the embodiment of Fig. 3.

Fig. 9 A and 9B are the side view and the top views of the whole crystalline lens assembly of selection.

Figure 10 is the whole lenticular side view of concave surface.

Figure 10 A is the two lenticular side views of composition of concave surface.

Figure 11 is the lenticular side view of shoulder cylindrical integral.

Figure 12 is the lenticular side view of cylindrical integral.

Figure 13 A and 13B are single shoulder lenticular side view in shape unit and top view.

Figure 14 is that crystalline lens is inserted into the side view in the capsule bag, and wherein crystalline lens is removed by lateral opening.

Figure 15 is the cylindrical lenticular side view that is positioned at the capsule bag.

Figure 16 is the lenticular profile of hollow unit.

Figure 17 A is to have and the lenticular perspective view of modulability that does not have sense of touch to be connected with the spiral crystalline lens with 17B.

Figure 17 C is the lenticular perspective view of modulability that the third crystalline lens composition is arranged.

Figure 17 D is the lenticular perspective view of modulability that anterior and middle crystalline lens composition are arranged.

Figure 18 A and 18B are tactile cylindrical lenticular perspective view and side view.

Figure 19 A and 19B are the lenticular top views of being made by sheet materials before crooked of modulability.

Figure 19 C and 19B are the lenticular top views of being made by sheet materials after bending of modulability.

Figure 20 A, 20B and 20C are the lenticular top view of controllability and two side views of being made by sheet materials.

Figure 21 is the front plan view of the lenticular embodiment of modulability.

Figure 22 is the side cross-sectional view of Figure 21.

Figure 23 is the plane rearview of Figure 22.

Figure 24 is the lenticular alternately property of the modulability of Figure 21-23 a crystalline lens element.

Figure 25 is the side cross-sectional view of lenticular another embodiment of modulability of the present invention.

Figure 26 is the side cross-sectional view of lenticular another embodiment of modulability of the present invention.

Figure 27 is the side cross-sectional view of lenticular another embodiment of modulability of the present invention.

Figure 28 is the front plan view of dwindling size of the lenticular selectivity embodiment of modulability of the present invention.

Figure 29 is the side cross-sectional view of lenticular another embodiment of modulability of the present invention.

Figure 29 A is the plane rearview of Figure 29.

Figure 30 is a cylindrical lenticular side cross-sectional view of the present invention.

Figure 31 is the front plan view of Figure 30.

Figure 32 is a cylindrical lenticular selectivity embodiment of the present invention.

Figure 33 is the front plan view of Figure 32.

Figure 34 is the side cross-sectional view of another embodiment of the lenticular preceding element of modulability of the present invention.

Figure 35 is the side cross-sectional view of another embodiment of the lenticular preceding element of controllability of the present invention.

Figure 36 is the side cross-sectional view of another embodiment of the lenticular preceding element of controllability of the present invention.

Figure 37 is the cross-sectional view of human lens capsule (capsule bag), shows modulability crystalline lens of the present invention, and wherein preceding crystalline lens element is against capsulociliary front portion, and back crystalline lens element is against the rear wall of capsule.

Figure 38 is that the cross section of human lens capsule (capsule bag) is solid, and modulability crystalline lens wherein of the present invention is positioned at the equatorial plane district of capsule with its preceding crystalline lens element, and back crystalline lens element is positioned at the rear wall against capsule.

Figure 39 is the lenticular cross-sectional view of modulability of the present invention, and wherein tactile greatest radius length is positioned in the middle of preceding element and the back element.

Figure 40 is the lenticular cross-sectional view of modulability of the present invention, shows tactile two embodiments simultaneously.

The description of preferable embodiment

Fig. 2 shows the cross section of eye.When light enters in the eye, through cornea 1; Through the aqueous humor 2 in the cup; Pupil 3 through the iris center; Antetheca through capsule bag 6a; Assemble refraction by crystalline lens 8; Rear wall through capsule bag 6b; Arrive the fovea centralis 11 of retina 10 through vitreous humor 9.Capsulociliary shape by ciliary muscle 4 to control attached to the filament that is called little band on the capsule.

The natural lens that Fig. 6 shows has center biconvex nuclear part 26, is centered on by concavo-convex meniscus 27a and b.The crystalline lens converging ray of biconvex.Irregular crystalline lens has dispersion effect to light.Therefore the meniscus of natural lens plays abirritation to the nuclear of assembling.The about 5mm of the diameter of the lenticular anterior-posterior or the utmost point.The about 9mm of equatorial diameter.

When natural crystalline lens 8 removed by capsulorhexis 25, the intraocular implant that shows among Fig. 3 and 4 can recover focusing.Implant has the preceding crystalline lens 12 of front surface 14 and has the back crystalline lens 13 of rear surface 15.By preceding extend with the back crystalline lens and is connected before and lenticular equator, back girth be telescopic room wall 16, this wall forms has equatorial diameter and the same plate-like room 17 of capsule 6 cardinal principles.Be full of fluid (gas or liquid) as the air after implanting by two crystalline lenses 12 and the rooms that form 17 13.Pressure around the equator in room is supported in the crystalline lens assembly of appropriate location.

Fig. 8 shows room equatorial diameter De, the same crystalline lens assembly of room polar diameter Dp and pole axis PaPp.The equator girth 24 of preceding crystalline lens 12 is the size (4-5mm) of pupil substantially.

Though crystalline lens can be hard or scalable, scalable crystalline lens can provide bigger modulability.Pro-and back crystalline lens, hard material can be made by biocompatibility, transparent material, as PMMA (polymethyl methacrylate), HEMA (hydroxyethyl meth acrylate), polysulfones, Merlon, or silicon polymer (polydimethylsiloxane).Soft lenticular material comprises the polymer such as the silica hydrogel of gel formation, polysaccharide such as hyaluronic acid, or the capsule of the lens-shaped of transparent polyvinyl alcohol.Preceding lenticular equatorial diameter is about size or the 5mm that enlarges pupil.Back crystalline lens and preceding lenticular thickness are 1 to 1.5mm.For typical eye, the preceding radius of preceding lenticular curvature 8 and 14mm between, the back radius of the lenticular curvature in back 4 and 7mm between.The curvature on each lenticular two sides can change with the difference of corrective ophthalmic shape (that is myopia).Because two crystalline lenses are to close the synneusis body, the centre has living space, so focal length and refracting power separate between them, still, if desired, refracting power can be in a crystalline lens.The thickness 0.1mm of room wall 16, can by methacrylate, silicon polymer or the other biological compatibility, telescopic material makes.When being full of, disk shape is to have the about 5mm of polar diameter, and the ellipsoid of the about 9mm of equatorial diameter is preferable.When ciliary muscle 4 loosens and expands, little equator with 5 tractive capsules 6, the crystalline lens assembly flattens to be increased its equatorial diameter and reduces its polar diameter, thus reduce two between the crystalline lens distance and change the refracting power of crystalline lens assembly.If crystalline lens is made by flexible material, as be full of the capsule of the lens-shaped of polyvinyl alcohol, they also pulled into the form that flattens and change to increase optical force.Insert the crystalline lens assembly by otch for convenience, soft crystalline lens can be made and dewater (making it to shrink) by the polymer that colloid forms, and no filling is after inserting in the room.The liquid of surrounding tissue can make crystalline lens rebuild and the filling room after insertion.This room also can be with microtubule or subcutaneous injection filling.

Fig. 5 shows another selection form of the present invention.Be that the preceding crystalline lens 19 of front curved surface 20 and the back lenticular crystalline lens assembly of rear curved surface 22 are arranged in capsule bag 6.Extend with being connected preceding with the back crystalline lens is to have diameter scalable, the resilient room wall 23 the same substantially with crystalline lens 19 and 21 with lenticular equator, back girth in the past.The remarkable parabolic chamber 24 that forms can be by fluid-filled (gas or liquid) as air.Two or more elasticity senses of touch can replace the room wall to settle crystalline lens and make it deflection leaning against capsule and extremely going up.The spring-like effect of sense of touch or room wall makes crystalline lens lean to the crystalline lens assembly that is supported in the appropriate location on the surface of the capsule utmost point.When the capsule bag by the ciliary muscle tractive with when loosening, crystalline lens mutually near and withdraw from so that focus adjustment to be provided.If use soft crystalline lens, ring on every side can provide support in lenticular equator.

Fig. 7 shows embodiment of the present invention, includes the thick crystalline lens of front surface 29 and rear surface 30.The body of crystalline lens 28 is significantly paraboloidal.That the parabola that is used for the object of the invention comprises is cylindrical, hyperboloid and parabola.This crystalline lens is made by elastomeric material, front and rear surfaces is leaned at capsule extremely go up.The crystalline lens that this spring-like effect is supported in the appropriate location is pulled the capsule bag or when loosening, and is preceding and rear surface bulk phase mutual connection near and withdraw from so that focus adjustment to be provided.

Fig. 5 can insert by the otch the same substantially with the crystalline lens width with the 7 crystalline lens assemblys that show, rotation or compression are inserted then.

The unit crystalline lens assembly of Fig. 9 A and 9B has preceding 100 to be connected core 104 with the bag of back 102 lens surfaces and a protrusion.The crystalline lens assembly is to become a slice by material transparent such as hydrogel, silicone rubber and soft acrylate moulding on the compressible optics.Between the crystalline lens pro-108 of Figure 10 and the back 110 recessed lens surfaces central circular shaped section 106 is arranged.Between the crystalline lens pro-108 of Figure 10 A and the back 110 recessed lens surfaces cylindrical center's part 105 is arranged.The crystalline lens of Figure 11 has ring-type ridge 112A to be connected capsule bag 6A, 6B with 112B.Figure 12 shows the crystalline lens of cylinder 114, and uses preferable when crystalline lens inserts by side capsule otch.The crystalline lens of Figure 13 A and 13b has single shoulder 116 and forms the body on the continuous bend surface 118 that comprises the back lens surface.

Figure 14 has shown the lenticular details that places the Figure 12 in the capsule bag.In order to insert crystalline lens, crystalline lens 120 is by edge-wise compression and be placed in and United States Patent (USP) 5,123, and 905 (this paper includes in as a reference) are similarly managed in 122, or uses as United States Patent (USP) 4,950 the special tweezers shown in 289 (this paper includes in as a reference).Pipe 122 is placed in a bag 6A, and among the 6b, crystalline lens 120 is pressed in the bag from syringe needle lightly.For abundant compression, need to use the material that height compressibility and memory are arranged, maybe can be to material dehydration.The light water gel provides this probability, but may lack the necessary enough refractive indexs of suitable amplification, yet the method for the refractive index that changes is as mixing the solute group in the hydrogel, and this hydrogel is available.Alternatively, a kind of very compressible colourless silicone compounds can be fit to.In order to increase refractive index and the further distortion of minimizing lens surface, available harder material in surface such as quartz or PMMA carry out shallow layer, are done in present glasses.The crystalline lens that Figure 15 shows has the sense of touch 140,142 of cylinder 120 and one group of C shape so that bigger positional stability to be provided.

The crystalline lens of Figure 16 A and 16B is similar to the crystalline lens of Figure 12, except center 124 is a hollow.This makes and is inserted with bigger compressibility.

The crystalline lens of Figure 17 A and 17B has preceding 126 and back 128 crystalline lenses, connects by compressible spiral 130.The crystalline lens of 17B has the bag that connects sense of touch 132A and 132B.Between the modulability crystalline lens pro-crystalline lens 126 of Figure 17 C and the back crystalline lens 128 middle crystalline lens 127 is arranged.Three crystalline lenses are on common optic axis.On lenticular spiral supported in the middle of sense of touch 132C was installed in, this spiral supported the equatorial zone that trends towards middle crystalline lens is placed phacocyst or capsule bag.The modulability crystalline lens of Figure 17 D does not have the lenticular back of the modulability of Figure 17 A-17C crystalline lens, but the back end of compressible spiral supporting ring 131 is arranged and attached to spiral on.Between the modulability crystalline lens pro-crystalline lens 126 of Figure 17 D and the back supporting ring 131 middle crystalline lens 127 is arranged also.Three crystalline lenses have common optic axis.On lenticular spiral supported in the middle of sense of touch 132C was installed in, this spiral supported the equatorial zone that trends towards middle crystalline lens is placed phacocyst or capsule bag.Crystalline lens leaned in the front side of capsule bag before Figure 17 A made to the lenticular compressible spiral of the modulability of 17D, made back crystalline lens or back ring (Figure 17 D) lean to the rear side at bag.Crystalline lens 126,127 and 128 can their periphery be fixed on the compressible spiral 130 or they can be fixed on the spiral by the periphery of crystalline lens support ring with them.Mouldable one-tenth a slice of the modulability crystalline lens of Figure 17 A-17D or can be by the assembling of isolating component, as compressible spiral, crystalline lens support ring (as using) and crystalline lens.

The crystalline lens of Figure 18 A and 18B is similar to the crystalline lens of Figure 12, but has proved tactile 134A, and 134b is to stablize crystalline lens.Figure 18 B shows alternative sense of touch 150, and its past 100 crystalline lens is with back 102 crystalline lenses extension and be connected preceding 100 crystalline lenses and back 102 crystalline lenses.

Sense of touch can be connected front surface or rear surface, but should retractility finely be compressed in the pipe making it.

Degeneration of macula requires to use very strong crystalline lens.Single crystalline lens can provide about 30 dioptric visions to change, and two crystalline lenses can provide and reach 60 dioptric visions variations.But amplification is big more, and the visual field is more little.Now, by placing crystalline lens (glasses) at the moment to treat.Yet by to the rear surface of retina moving magnifier, the visual field can increase, so of the present invention have the crystalline lens assembly of two lens surfaces can be used to treat degeneration of macula.Similarly, serious myopia (myopia) can be by using the nonreentrant surface treatment on back and/or preceding lens surface.

Figure 19 A, B, C, D have shown can be by the crystalline lens that has some elastic sheetings to make as thin acrylic acid.Preceding 152 and the back 162 crystalline lenses are Fresnal type crystalline lenses.These crystalline lenses can provide sense of touch 164A, 164B.Vision between the crystalline lens 152,162 of before center ring 158 has opening 160 to keep and back.Bridge 154 connects the crystalline lens with core.Bridge 154 is furnished with pleat trace 156 to be easy to bending, as shown in figure 19.Figure 19 B shows does not have tactile similar crystalline lens.

For more elasticity is provided, the crystalline lens of Figure 19 D is furnished with second center ring 158.Several these parts are possible.If having only preceding crystalline lens is the Fresnal crystalline lens, crystalline lens is also worked, because it can shift to and leave retina.

Figure 20 A, B and C show alternative crystalline lens of being made by sheeting.Crystalline lens 100,102 connects by ring 180.Make preceding 100 and the back lens positioning when bending, make the optic axis align, ring 180 works to connect bag.The two halves of ring can be shown in Figure 20 B or in the opposite direction crooked shown in Figure 20 C in the equidirectional bending.

This lenticular principle, can realize by making a bolster with the same characteristic of this crystalline lens with study crystalline lens and adjusting applicable to toy for children.The material of this bolster is transparent especially compressible material.The handle that is arranged on the largest circumference can be introduced design.Outwards the tractive handle reduces amplification.Loosening or inwardly pushing away handle to increase amplification, and then it becomes Educational toy.

With reference to figure 21-23, modulability crystalline lens assembly A has preceding crystalline lens element 206A and back crystalline lens element 208A.Preceding crystalline lens element 206A has annular support element or ledge or disk 208A.The center of ledge is open, and preceding crystalline lens 100A is positioned at wherein and is supported element 200A and is supported on the ledge.Back crystalline lens element 208A has annular support element, ledge or disk 204A, and its center is open, can hold and support back crystalline lens 102A.Before crystalline lens element and back crystalline lens element can use similar or make up with the back similar form of crystalline lens element 208A with preceding crystalline lens element 206A.In other words, each crystalline lens element can have the ring-type ledge, and the crystalline lens element is positioned at the central opening of ring sample ledge and is supported by two or more supporting elements or ledge with central opening is occupied and support this crystalline lens fully by crystalline lens.Though only illustrate with two supporting elements, if desired, crystalline lens can be with three, four, or more supporting element support.

With reference to Figure 24, illustrated can before selective embodiment structure and the back crystalline lens element 208A shown in Figure 23 of crystalline lens element 206AA similar.The preceding crystalline lens element 206AA of Figure 24 has ring-type ledge 104B, and its central opening is occupied fully by preceding crystalline lens element 100A.Sense of touch 202 is attached to the dorsal part of ledge 104B.

With reference to Figure 25, illustrated alternative embodiment of modulability crystalline lens assembly B of the present invention, wherein preceding crystalline lens element 206B and back crystalline lens element 208B have similar structure, and promptly they all have cyclic rings sample ledge 104B and 204B and big central opening.Preceding and back crystalline lens B and 200b are positioned at open centre and are supported by ledge by supporting element 200B and 200BB.In the embodiment illustrated, alternative sense of touch design 202B and 202BB have been illustrated.

With reference to Figure 26, illustrated another embodiment of modulability crystalline lens assembly C of the present invention, wherein preceding crystalline lens element 206C and preceding crystalline lens element 206A shown in Figure 21 have similar structure, and back crystalline lens element 208C and back crystalline lens element 208A shown in Figure 23 have similar structure.In this embodiment of invention, the forward part of sense of touch 202C and 202CC is fixed on the supporting element 200c, rather than is fixed on the ledge 104C of preceding crystalline lens element.Resemble in other many figure, show tactile two embodiment 202C and 202CC in the figure respectively, illustrate to can be used for the lenticular various tactile side-looking cross sections of modulability of the present invention.Crystalline lens element 206C before sense of touch 202CC can be made tactile arch location more close by reversing, more close back, horizontal component location crystalline lens element 208C.

With reference now to Figure 27,, another side-looking cross-sectional view of lenticular another embodiment of modulability of the present invention (also seeing another embodiment of Figure 29 and 29A).Illustrated the lenticular assembly D of modulability of the present invention, wherein the crystalline lens assembly has preceding crystalline lens element 206D to support preceding crystalline lens 100D and back crystalline lens 102D, but is not with the back crystalline lens element (back crystalline lens element 204 is illustrated in Figure 21-23 and 26 etc.) of back ledge.Sense of touch 202D is directly connected in the periphery of back crystalline lens 102d and the back crystalline lens is connected on the preceding crystalline lens element 206D.

The crystalline lens arrangement of holding of modulability crystalline lens D can be by the reversing (not shown); Before crystalline lens 100D can image pattern 27 back crystalline lens 102d directly be fixed on the sense of touch 202d like that, back crystalline lens 102D can be as Figure 21, shown in 22 grades to support in the sense of touch 202D pro-crystalline lens element attached to back crystalline lens element.

With reference now to Figure 29,, the side-looking cross-sectional view of another embodiment of modulability crystalline lens assembly E of the present invention.In this embodiment of the present invention, back crystalline lens element 208.The preceding crystalline lens element 206E that only comprises ledge 104E and preceding crystalline lens 100E.This assembly has a sense of touch 202E at least.Tactile end is attached to the upper end of ledge 104E, the other end of sense of touch ring in the preceding crystalline lens element back that is connected to the ledge bottom around.Preferably, this assembly has two senses of touch, and sense of touch is to support that assembly is positioned at phacocyst (capsule bag) from next sense of touch skew circumference 90 degree.Figure 29 A illustrates sense of touch 202E and how 202EE is connected on the periphery of ledge 104E.In cutaway view, illustrated the transparent disc 210 of back connection-sense of touch 202E and 202EE.Disk 210 is clearly on vision, but optical characteristics can be arranged, as has little or do not have the aspheric surface of vision power, or can be crystalline lens (also seeing alternative embodiment of Figure 27) again.Tactile end can maybe can be connected on the disk by hot weld connection, method such as bonding with disk is Unitarily molded.The assembly of Figure 29 has in the front of ledge 104E along the ring-type ridge 212 of periphery.Crystalline lens element location leaned against antetheca or the front side of phacocyst 6A before this ridge can be supported.But this ridge is chosen wantonly.

With reference to Figure 30 and 31, illustrated the cylindric or tubulose crystalline lens 114A that preceding terminal 100F and the terminal 102F in back are arranged.The type crystalline lens is very useful to the flexible effect of magnified image.Total crystalline lens assembly 120A can have two or more senses of touch.In Figure 30 embodiments shown, two dissimilar sense of touch 202F and 202FF have been illustrated.

In Figure 31, having illustrated has the assembly of three sense of touch 202FF 120A, and three sense of touch 202FF separate with 120 degree around the periphery of cylindrical crystalline lens 114a.Sense of touch can be Unitarily molded with the crystalline lens element, or afterwards by the hot weld connection or use medically acceptable binding agent, they can be fixed on the crystalline lens element.

With reference to Figure 32 and 33, illustrated another embodiment of cylindrical crystalline lens assembly 120B.This crystalline lens assembly 120B comprises cylindrical crystalline lens 114B and sense of touch assembly 222, and this sense of touch assembly 222 comprises suitable and is fixed on the periphery of cylindrical crystalline lens assembly 114B and outwards radiates the sleeve pipe 220 of extension from two or more sense of touch 202G.Although most of crystalline lens assemblys of setting forth among the present invention only show two senses of touch for convenience of explanation, but recognize that two or more senses of touch can be used and common three be best quantity, this is because the crystalline lens assembly that it describes the present invention concentrates in capsule bag or the phacocyst.Sense of touch 202G needn't be attached on the crystalline lens 114B that sleeve pipe 220 is arranged.Sense of touch can by welding or use adhesive on crystalline lens or can with the crystalline lens molding.Similarly, sense of touch 202F, 202FF can be with the sleeve pipe (not shown) to be fixed on the crystalline lens 114a with the similar mode of sense of touch 202G.

With reference to Figure 34,35 and 36, preceding and back ledge 104 and 204 can have other shape, rather than flat circular disc shaped.For example, the cross section of the convex-concave ledge 104F of crystalline lens 100F before Figure 34 shows.Ledge is supported crystalline lens 100F.Figure 35 shows the cross section of preceding ledge 104G of the rear surface of spill front surface peace.Ledge is supported crystalline lens 100G.Figure 36 has illustrated the cross section of ring-like ledge, and as the ledge that Figure 21 shows, wherein ledge has convex surface in front side and rear side.In this embodiment, preceding crystalline lens element 206H has outside ring-like ledge 104H and is fixed on the center crystalline lens 100H of ledge by supporting element 202H.The preceding crystalline lens element 206F that illustrates among Figure 34-36,206G and 206H only are used to illustrate purpose, are not the unique shapes that can be used for preparing preceding crystalline lens element and back crystalline lens element.The Any shape that crystalline lens element 206 was taked before back crystalline lens element 208 can be taked.

With reference to Figure 37 and 38, illustrate the capsule bag with front side 6A and rear side 6B.Modulability crystalline lens assembly is implanted the capsule bag by the conventional method of explaining as this paper.In Figure 37, crystalline lens was positioned at the front side that leans against capsule bag 6A before modulability crystalline lens assembly provided, and back crystalline lens is positioned at the rear side of adjacent bladder bag 6B.In Figure 38, crystalline lens 100II was positioned near the zone of equatorial plane of capsule bag before modulability crystalline lens assembly was designed to, and back crystalline lens 102II is positioned at the rear side that leans against capsule bag 6B.Modulability crystalline lens assembly can be designed to preceding crystalline lens element 206 placed from contiguous back crystalline lens element 208 until beyond the front side of capsule bag 6a Anywhere.

Figure 39 and 40 has illustrated tactile modulability crystalline lens assembly, and preceding and back crystalline lens is positioned at capsule bag certain location.For example, crystalline lens element and back crystalline lens element before the similar fashion illustrated with Figure 37 of the modulability crystalline lens of Figure 39 is settled.In Figure 40, the modulability crystalline lens assembly of illustrating has two different sense of touch 202K and 202L.Crystalline lens element 206A before the similar fashion that the crystalline lens combination of tactile 202K is illustrated with Figure 38 is settled.And the crystalline lens assembly of tactile 202L is settled crystalline lens in such a way, promptly before crystalline lens element 206 be positioned at the front side of capsule bag 6A, if back crystalline lens element not in the equatorial plane of capsule bag, equatorial plane that can close capsule bag.

With reference to Figure 28, the plane graph of preceding crystalline lens element and back crystalline lens element can have different shape, comprises Figure 21, the annular shown in 24 and 23, square shown in Figure 28, hexagon and triangle (not shown).Believe that in plane graph preceding crystalline lens element and back crystalline lens element are generally annular.But the situation that other shapes are arranged is favourable.In Figure 28, ledge 104L is the square ring-like structure that big opening is arranged, and wherein crystalline lens 101L is arranged in this opening and is fixed by four supporting elements.Back crystalline lens element 208 can be similar with the back crystalline lens element shown in Figure 23 or 25, or it can have shown in Figure 28 and preceding crystalline lens element 206L similar planar figure.Supporting element shows the long limit of leaving ledge 104L.Supporting element also can extend inward into lenticular periphery from corner.Crystalline lens can be supported by two or more supporting elements.The ledge of Figure 28 can have firm structure that the opening at center is occupied fully by crystalline lens 100L, just as the opening of the ledge 104B of Figure 24 is occupied fully by crystalline lens 100.Can extend from the rear side of ledge 104L or extend with upwardly extending sense of touch (not shown) backward from preceding crystalline lens element 206L from the periphery of 104L.In addition, sense of touch and crystalline lens and supporting element 200L can one time molding make monolithic or be fixed together by binding agent or means of spot welds.

In above-mentioned embodiment, when to place the sense of touch of capsule bag be flexible and radially outward moves, make sense of touch connect the equatorial zone of capsule bag, promptly have the capsule bag part of the maximum perimeter that connects ciliary muscle.In a preferable embodiment of the present invention, sense of touch makes progress and stretches out to be connected the inwall of capsule bag.

In the embodiment illustrated, the axle with alphabetical O sign is the optic axis of crystalline lens assembly.

Claims (14)

1. crystalline lens assembly comprises:

Preceding crystalline lens element, described preceding crystalline lens element has front surface, periphery and optic axis are supported in the equator;

Back crystalline lens element, described back crystalline lens element have the rear surface, periphery and the optic axis parallel substantially with the described optic axis in described preceding crystalline lens zone are supported in the equator; With

Two or more deformable senses of touch of periphery are supported in the described equator of supporting periphery to extend to described rear surface from the equator of described front surface.

2. the described crystalline lens assembly of claim 1 is characterized in that preceding crystalline lens element and tactile combination are whole.

3. the described crystalline lens assembly of claim 1 is characterized in that described assembly is whole.

4. the described crystalline lens assembly of claim 1, its optical change＞30 diopters.

5. the described crystalline lens assembly of claim 1 has at least one spill lens surface.

6. the described crystalline lens assembly of claim 1, it is characterized in that described before and the rear surface coating is arranged.

7. the described crystalline lens assembly of claim 1 is characterized in that assembly has three senses of touch.

8. the described crystalline lens assembly of claim 1 is characterized in that described assembly can be dehydrated.

9. the described crystalline lens assembly of claim 1, it is peripheral that it has hard relatively optics to support periphery and relative soft equator to support.

10. the described crystalline lens assembly of claim 1 is characterized in that described assembly is injectable.

11. the described crystalline lens assembly of claim 3, it has at least one ledge.

12. the described crystalline lens assembly of claim 3 is characterized in that described at least one ledge is cyclic.

13. the described crystalline lens assembly of claim 1 is characterized in that described crystalline lens assembly made by sheeting.

14. the described crystalline lens assembly of claim 13 is characterized in that described assembly is folding.

Images