US3866249A - Posterior chamber artificial intraocular lens - Google Patents

Posterior chamber artificial intraocular lens Download PDF

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Publication number
US3866249A
US3866249A US44896674A US3866249A US 3866249 A US3866249 A US 3866249A US 44896674 A US44896674 A US 44896674A US 3866249 A US3866249 A US 3866249A
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US
United States
Prior art keywords
prongs
intraocular lens
artificial intraocular
lens
optical zone
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.)
Expired - Lifetime
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English (en)
Inventor
Leonard Flom
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Individual
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to US44896674 priority Critical patent/US3866249A/en
Application filed by Individual filed Critical Individual
Priority to GB619475A priority patent/GB1474139A/en
Priority to IL46637A priority patent/IL46637A/en
Priority to IN301/CAL/1975A priority patent/IN142427B/en
Publication of US3866249A publication Critical patent/US3866249A/en
Application granted granted Critical
Priority to FR7505396A priority patent/FR2262956B3/fr
Priority to AU78452/75A priority patent/AU485373B2/en
Priority to AR25779075A priority patent/AR202741A1/es
Priority to NL7502390A priority patent/NL7502390A/xx
Priority to EG11075A priority patent/EG11637A/xx
Priority to BR7501277A priority patent/BR7501277A/pt
Priority to JP2695275A priority patent/JPS50122098A/ja
Priority to IT6757475A priority patent/IT1051606B/it
Priority to SE7502484A priority patent/SE7502484L/xx
Priority to DE19752510099 priority patent/DE2510099A1/de
Priority to ES435427A priority patent/ES435427A1/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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 or corneal implants; Artificial eyes
    • A61F2/16—Intraocular lenses
    • 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 or corneal implants; Artificial eyes
    • 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 or corneal implants; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2/1601—Lens body having features to facilitate aqueous fluid flow across the intraocular lens, e.g. for pressure equalization or nutrient delivery
    • 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 or corneal implants; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2002/16965—Lens includes ultraviolet absorber
    • A61F2002/1699—Additional features not otherwise provided for
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0008—Fixation appliances for connecting prostheses to the body
    • A61F2220/0016—Fixation appliances for connecting prostheses to the body with sharp anchoring protrusions, e.g. barbs, pins, spikes

Definitions

  • An artificial intraocular lens for implantation in the [45] Feb. 1'8, 1975 posterior chamber of an eyeeafter intracapsular or extracapsular lens extraction comprises a transparent optical zone portion shaped similar to the natural lens and a plurality of prongs protruding forwardly from the periphery thereof, wherein after implantation of the artificial intraocular lens the prongs extend through the iris to anchor the lens in the posterior chamber of the eye.
  • the prongs protrude forwardly from the lens and are curved so that the outer ends of the prongs extend generally along the periphery of the lens, and the prongs are preferably arranged in pairs with the prongs in each pair extending in opposite directions along the periphery ofthe lens.
  • a peripheral flange may be provided surrounding the optical zone portion for attaching the prongs to the lens, and a plurality of openings may be provided in the flange adjacent to the optical zone portion to permit passage of aqueous fluid from the ciliary body to the anterior chamber.
  • an insertion necklace comprising a semirigid loop passed through the openings in the flange surrounding the optical zone portion to embrace and support the lens during implantation thereof.
  • a handle is connected to the loop for holding and manipulating the lens.
  • the loop may be cut for removal of the insertion necklace after implantation of the lens.
  • Ridley developed an artificial intraocular lens which comprised an optical lens portion having three foot-like projections or feet extending radially outward therefrom. Ridley originally placed this lens in the posterior chamber of the eye, behind the iris, withthe feet resting against the ciliary body between the ciliary process and the base of the iris. However, positioning of this lens in the posterior chamber was abandoned because of instances of dislocation after implantation and failures from glaucoma and the like, probably caused by irritation of the ciliary body by the feet.
  • Epstein and C. D. Binkhorst developed artificial intraocular lenses which rely on the constrictor muscle of the iris as the positioning mechanism.
  • Epstein first designed a collar-stud implant, with the pupil constructed in its waist for positioning thereof, and later a Maltese Cross pupil-supported implant with two leaves anterior to the iris and two leaves at right angles to the others and behind the iris.
  • Binkhorst developed an iridocapsular (two-loop) lens and an iris-clip (fourloop) lens.
  • the former comprises a lens of larger diameter than the pupil and placed thereover so that the periphery engages the front of the iris, and further comprises two metal loops which protrude from the back of the lens and extend generally parallel with the back surface of the lens and behind the iris for clipping the lens to the iris.
  • Binkhorsts iris-clip lens is similar except that the iris is held by two pairs of loops which flank the iris and support the lens in front of the pupil. In some instances the iris is sutured to the clips to secure the positioning of the lens.
  • This type of lens is also unsatisfactory in several respects. It, by necessity, interferes with constriction of the pupil, and in fact fixes the size of the pupil. It is also an anterior chamber lens, wherein correct positioning of the optical center cannot be achieved.
  • the above lenses rely on sutures placed in the iris for holding the lenses in position.
  • the iris consists of spongy, flexible tissue which may be pulled and stretched to a limited degree without damaging it.
  • the iris has the unique property of never healing together after being cut or damaged. Thus, if a suture pulls through the iris, the damage to the iris is permanent. Because sutures are generally of a small diameter, if a lens positioned and held by sutures is subjected to a dislocating force, the sutures may cut the iris, resulting in permanent damage.
  • the artificial intraocular lens according to the invention herein is a posterior chamber lens, wherein all the advantages of natural positioning of the lens are achieved.
  • the artificial intraocular lens is held in place by a plurality of prongs extending forwardly from and along the periphery of the lens, wherein the prongs pass through the iris.
  • the prongs are angled to prevent the lens from being dislocated.
  • the prongs are attached to a flange peripherally surrounding the optical portion of the lens, and openings are provided at the intersection of the lens and the flange to permit the free flow of aqueous produced by the ciliary body.
  • the prongs are attached to the outer periphery of the optical portion of the lens, and no flange is employed.
  • the artificial intraocular lens according to the invention herein is firmly held in the natural position of the posterior chamber. It requires no sutures, which simplifies the technique necessary for implantation thereof and also reduces the possibility of damage to the iris by sutures.
  • the artificial intraocular lens according to the invention herein avoids any contact with the ciliary body, and thereby avoids the many serious risks attendant therewith.
  • an insertion necklace which comprises a semirigid loop passed through two of the peripheral openings in the lens wherein the lens is embraced and carried by the insertion necklace.
  • the loop terminates in a handle.
  • True binocular vision may be achieved with the posterior chamber lens according to the invention herein, and complications from irritation of the ciliary body and/or forward displacement of the vitreous humor and retinal detachment are avoided.
  • OBJECTS OF THE INVENTION lt is an object of the invention to provide an artificial intraocular lens for obviating aphakia.
  • FIG. l is a front elevation view partially in section, of an artificial intraocular lens according to the invention herein;
  • FIG. 4 is a side elevation view of another embodiment of an artificial intraocular lens according to the invention herein;
  • FIG. 5 is a section view of the artificial intraocular lens of FIG. 4 taken along the lines 5--5 of FIG. 4;
  • FIG. 6 is a front elevation view of the artificial intraocular lens of FIG. l having an insertion collar according to the invention herein attached thereto;
  • FIG. 7 is a sectional view of the insertion collar handle taken along the lines 7-7 of FIG. 6;
  • FIG. 9 is a sectional view of an eye showing an artificial intraocular lens according to the invention herein being implanted
  • FIG. l0 is a sectional view of an eye showing an artificial intraocular lens according to the invention herein implanted therein;
  • FIG. 12 is a front view of an eye having another embodiment of an artificial intraocular lens according to the invention herein implanted therein;
  • FIG. 13 is a front view of an eye having another embodiment of an artificial intraocular lens according to the invention herein implanted therein.
  • the invention herein relates to an artificial intraocular lens, several embodiments of which will be described, and an insertion necklace for holding and manipulating the artificial intraocular lenses during implantation thereof.
  • the lens l0 generally comprises an optical zone portion 11, a flange 12 peripherally surrounding the optical zone portion 1l, and a plurality of prongs 13-20 for anchoring the lens in an eye.
  • a plurality of openings 21-24 may be provided through the flange near where the flange intersects the optical zone portion ll.
  • each prong extends forwardly from the flange 12 and is curved so that its outer end is disposed ,generally parallel to the plane of flange 12.
  • Each prong is approximately 2 millimeters in length and its outer end is preferably enlarged and rounded.
  • the base of each prong is positioned at the outermost periphery of flange l2, and the bases of each pair of prongs, such as prongs and 16, are separated by a distance S which may be approximately l millimeter.
  • the prongs in each pair extend in opposite directions from each other along the outer periphery of flange 12.
  • the prongs 13-20 are formed integrally with an annular band 25 which is seated in an outwardly opening peripheral groove 26 in flange l2.
  • the prongs 13-20 and the annular band 25 may be fabricated of gold or vitallium, or any other material having the desired qualities, which include being medically acceptable for implantation into the eye and also being sufficiently malleable or bendable to permit adjustment or manipulation and to eliminate risk of breakage.
  • the optical zone portion l1 and the flange l2 are preferably fabricated of a medical grade of polymethyl methacrylate.
  • the annular band 25 may be at least partially encapsulated in the flange 12 by molding the optical zone ll and flange 12 with the annular band 25 with the integral prongs 13-20 in position.
  • an artificial intraocular lens 40 which is a third embodiment according to the invention herein.
  • Lens 40 does not incorporate a peripheral flange, but is shaped similarly to the natural lens and has a plurality of pairs of prongs attached thereto near the periphery thereof.
  • this embodiment does not permit spacing the prongs as far from the central portion of the lens as do the earlier described embodiments, the artificial intraocular lens 40 has the advantage of having no flange protruding outwardly therefrom which may come into contact with the ciliary body.
  • FIG. 5 illustrates the attachment of the prongs to the artificial intraocular lens 40.
  • Two prongs 4l and 42 comprising one pair of prongs are integral by virtue of a connecting portion 43.
  • the connecting portion 43 may be generally C-shaped and is capsulated in the lens during molding thereof.
  • prongs could be attached to the lens 40 by forming the prongs integrally with an annular'band and seating the annular band in the outermost periphery of the lens, similar to the structure described above with respect to lens 10.
  • the prongs could also be 'attached by forming opengings through or into the lens 40 and inserting the prongs therein, similar to the attachment of the prongs in lens 30 described above.
  • lens 40 does not incorporate a flange protruding radially outward therefrom, there is no need to provide drain holes for permitting the passage of aqueous about the edge of the lens.
  • the invention herein is also directed to an insertion necklace which aids the ophthalmologic surgeon in handling, inserting, and manipulating the artificial intraocular lens during implantation thereof.
  • An insertion necklace according to the invention herein is indicated at 50 of FIG. 6, and it generally comprises a semirigid loop 5l having a tail 52 extending therefrom to a handle 53. Still referring to FIG. 6, the insertion necklace 50 is shown used with the artificial intraocular lens 10 of FIGS. 1 and 2.
  • the loop 51 is passed through the drain holes 22 and 24 wherein a portion 51A of the loop embraces the backside of the optical portion 1 1 of the lens.
  • the loop 51A is preferably sized so that the sections of the loop converging toward the tail 52 from drain holes 22 and 24 pass under the prongs 17 and 18 respectively, wherein the prongs help to maintain the lens in the plane of the loop.
  • the loop can be easily disengaged from the; prongs if and when desired.
  • the handle 53 is preferably of an elongated oval or flat sectional configuration, wherein the lens may be easily twisted.
  • the flat surface is preferably generall parallel to the front surface of the lens wherein the handle provides an indication of the orientation ofthe lens.
  • the loop and tail are preferably fabricated of a semirigid material such as superamid or vitalli'um wire, or polyethylene or other plastic tubing or lwire, and the handle 53 into which the tail 52 is seated may be fabricated of the same material.
  • the eye 70 comprises a transparent cornea 71 which connects with the sclera 72, better known as the white of the eye.
  • the sclera extends substantially around the entire eye except for the region of the cornea.
  • a thin membrane 73 which is known as the conjunctiva, extends from the cornea to the underside of the eyelid.
  • Schlemns canal indicated at 74, is located near the intersection of the cornea, sclera, and conjuctiva.
  • the choroid 75 overlays the interior surface of the sclera and the retina 76 overlays the inner surface of the choroid 75.
  • the choroid joins with the ciliary body, genen ally indicated at 77, which includes the ciliary process 80 and ciliary muscle 8l.
  • the ciliary body Extending fro'm the ciliary body is the iris 82 which defines the pupil 83.
  • the choroid, ciliary body, and iris are together known as the uveal tract, which is a vascular tract surrounding most of the eye.
  • the interior of the eye is substantially filled with vitreous humor 90 and the hyloid membrane 91 covers the surface of the vitreous humor.
  • the anterior chamber of the eye is indicated at 92, and is located between the front of the iris and the cornea 7l.
  • the posterior chamber of the eye indicated at 93, is located between the iris and the vitreous humor.
  • the natural lens not shown in the drawings herein, occupies the posterior chamber 93 and is held in place by zonules 94, which are shown cut as they would be during removal of the natural lens.
  • the iris 82 it defines the pupil 83 by virtue of a central opening therein.
  • Sphincter and dilator muscles 84 and 85 are located in the iris adjacent to the inner periphery thereof, and control the size of the pupil.
  • the primary expansion and contraction of the tissue of the iris takes place in the vicinity near the sphincter and dilator muscles.
  • the stroma 86 of the iris extends between the ciliary body and the inner portion of the iris including the sphincter and dilator muscles.
  • the stroma tissue passively folds in an accordian-like manner during dilation and contraction of the pupil.
  • the iris tissue, including the stroma is quite flexible, and can be pulled and stretched. However, the iris has the unique property of not healing if torn or damaged. Accordingly, care should be taken in manipulating the iris.
  • the pupil is directly dilated to the point where the lens can be inserted therethrough without need for cutting the iris.
  • Some stretching of the sphincter and dilator muscles is necessary to achieve passage of thev lens, but if carefully done these muscles will not be damaged.
  • the first step after opening an incision and laying back the cornea may be to perform an intracapsular or extracapsular extraction, as the condition of the patient dictates.
  • the artificial intraocular lens 10 is inserted under one edge of the iris and the leading pair of prongs 13 (shown) and 14 (not shown) are pushed through the stroma tissue. Thereafter, the converging sections of loop 5l of the insertion necklace 50 may be disengaged from the anchoring prongs and the lens inserted entirely under the iris. The remaining prongs, such as prongs 18, 19 and 20 (show) may now be inserted through the stroma, taking care to stretch the stroma tissue so that Ithe tip of each prong is inserted through the stroma tissue approximately at the point where the base of the anchoring prong will ultimately seat upon releasing the stroma.
  • the loop 51 of the insertion necklace may be cut and the insertion necklace removed.
  • the ophthalmologic surgeon may then close the eye in accordance with ordinary ophthalmologic surgical techniques.
  • the artificial intraocular lens 10 is shown implanted into the eye 70.
  • the artificial intraocular lens is positioned in the posterior chamber 93, thereby closely duplicating the natural state and providing for restoration of good binocular vision.
  • the iris 82 is shown with the pupil 83 contracted to its normal position, whereby it is apparent that the prongs extend through the stroma portion of the iris, where they will cause no irritation. Also, because the stroma tissue passively folds and opens during dilation and contraction of the pupil, the lens does not cause pulling or tearing of the iris and remains in its proper position.
  • the artificial intraocular lens also provides support for the hyloid membrane and the vitreous humor. It is anticipated that fewer instances of retinal detachment will follow cataract surgery when using an artificial intraocular lens according to the invention herein.
  • Procedure for implantation of the other embodiments of artificial intraocular lenses according to the invention herein is similar.
  • the position of the other lenses in the eye after implantation is also similar, i.e.,
  • the lenses are positioned in the posterior chamber of the eye with the prongs extending forwardly through the stroma of the iris.
  • FIG. 11 a front view of the eye 70 having the artificial intraocular lens l implanted therein is shown.
  • the prongs 13-20 protrude through the iris 82 in its outer or stroma portion 86 and hold the lens in position without interfering with dilaton of the pupil.
  • the optical zone portion ll of the lens is positioned behind the pupil 83, as desired.
  • FIG. l2 there is shown an eye 100 having an iris 101 upon which a peripheral iridectomy has been performed to obviate glaucoma, in accordance with ordinary techniques. Therefore, the iris 101 has the usual pupil 102 positioned at the center thereof, and in addition has a secondary, peripherally positioned pupil 103 resulting from the peripheral iridectomy.
  • Another embodiment 110 of an artificial intraocular lens according to the invention herein has been implanted into the eye 100.
  • the lens 110 is ccharacterized by having prongs lll-116 arranged in three pairs evenly spaced about its periphery. Three pairs of prongs are sufficient to hold the lens in position and are easily placed to not interfere with the secondary pupil 103 formed during the peripheral iridectomy.
  • FIG. 13 Another eye 120 is shown in FIG. 13 wherein a sector iridectomy has been performed on the iris 121 thereof to enlarge the pupil 122 so that it extends to the periphery of the iris.
  • An artificial intraocular lens 125 comprising another embodiment of the invention herein has been implanted into the eye 120.
  • the lens 125 has six prongs 126-131 arranged in three pairs spaced about the periphery of the lens; however, in contrast to the earlier described embodiments, prongs 126 and 127 comprising the first pair of prongs have their bases widely separated to straddle and accommodate the elongated pupil 122 therebetween.
  • the remaining prongs 128-131 are arranged in two pairs substantially evenly spaced with the first pair of prongs about the periphery of the lens 125.
  • FIGS. l2 and 13 illustrate how the artificial intraocular lens according to the invention herein may be adapted for use in a variety of medical situations, such as the peripheral iridectomy and the sector iridectomy.
  • the artificial intraocular lenses can be held and manipulated by conventional forceps, or by provision of a flexible tipped instrument having an opening therethrough to which suction is applied, wherein the lens is held to the instrument by vacuum and released from the instrument by releasing the section.
  • various ophthalmologic surgeons may develop different techniques dictated by their own skills and preferences.
  • the artificial intraocular lenses and the apparatus aiding implantation thereof described above are believed to efficiently achieve the objects of the inven tion.
  • the usefulness and advantages of the artificial intraocular lenses and the apparatus aiding implantation thereof will be readily apparent to those skilled in the art.
  • an artificial intraocular lens for implantation in the posterior chamber of an eye, the artificial intraocular lens comprising an optical zone portion fabricated of transparent material and shaped similar to a natural lens, and a plurality of prongs attached to the optical zone portion near the periphery thereof, the prongs protruding forwardly therefrom for insertion through the iris of the eye to hold and position the lens therein.
  • an artificial intraocular lens as defined in claim 4 wherein the plurality of prongs is an even number of prongs arranged in pairs about the outer periphery of the optical zone portion, each pair of prongs comprising two prongs attached to the optical zone portion at adjacent points, and wherein the outer portions of the prongs in each pair of prongs extend in opposite directions along the periphery of the optical zone portion.
  • the plurality of prongs is an even number of prongs arranged in pairs about the outer periphery of the optical zone portion each pair of prongs comprising two prongs attached to the optical zone portion at adjacent points, and wherein the outer portions of the prongs in each pair of prongs extend in opposite directions along the periphery of the optical zone portion.
  • each pair of prongs is integral by virtue of a connecting portion extending therebetween and wherein the prongs are mounted by imbedding the connecting portion in the optical zone portion.
  • An artificial intraocular lens for implantation in the posterior chamber of an eye comprising an optical zone portion fabricated of transparent material and shaped similar to a natural lens, a flange formed integrally with the optical zone portion and extending radially outwardly from the periphery of the optical zone portion, and a plurality of prongs attached to the flange, the prongs protruding forwardly therefrom for insertion through the iris of the eye to hold and position the lens therein.
  • An artificial intraocular lens as defined in claim 12 wherein the inner portions of the prongs adjacent to the flange protrude forwardly from the flange and wherein the prongs are curved so that the outer portions of the prongs extend along the periphery of the flange and generally parallel to the plane of the flange.
  • an artificial intraocular lens as defined in claim 17 wherein the plurality of prongs is an even number of prongs arranged in pairs above the flange, each pair of prongs comprising two prongs attached to the flange at adjacent points, and wherein the outer portions of the prongs in each pair of prongs extend in opposite directions along the periphery of the flange.

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Prostheses (AREA)
  • Eyeglasses (AREA)
US44896674 1974-03-07 1974-03-07 Posterior chamber artificial intraocular lens Expired - Lifetime US3866249A (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
US44896674 US3866249A (en) 1974-03-07 1974-03-07 Posterior chamber artificial intraocular lens
GB619475A GB1474139A (en) 1974-03-07 1975-02-13 Artificial intraocular lens
IL46637A IL46637A (en) 1974-03-07 1975-02-14 Artificial intraocular lens
IN301/CAL/1975A IN142427B (en, 2012) 1974-03-07 1975-02-17
FR7505396A FR2262956B3 (en, 2012) 1974-03-07 1975-02-21
AU78452/75A AU485373B2 (en) 1974-03-07 1975-02-21 Posterior chamber artificial intraocular lens
AR25779075A AR202741A1 (es) 1974-03-07 1975-02-27 Lente intraocular artificial, para implantacion en la camara posterior del ojo
NL7502390A NL7502390A (nl) 1974-03-07 1975-02-28 Kunstmatige ooglens.
EG11075A EG11637A (en) 1974-03-07 1975-03-04 Artificial intraocular lens
BR7501277A BR7501277A (pt) 1974-03-07 1975-03-04 Lente artificial intra-ocular
JP2695275A JPS50122098A (en, 2012) 1974-03-07 1975-03-05
IT6757475A IT1051606B (it) 1974-03-07 1975-03-06 Lente artificiale intraoculare
SE7502484A SE7502484L (en, 2012) 1974-03-07 1975-03-06
DE19752510099 DE2510099A1 (de) 1974-03-07 1975-03-07 Kuenstliche, intraokulare linse
ES435427A ES435427A1 (es) 1974-03-07 1975-03-07 Cristalino artificial intraocular destinado a ser implanta-do en la camara posterior de un ojo.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44896674 US3866249A (en) 1974-03-07 1974-03-07 Posterior chamber artificial intraocular lens

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US3866249A true US3866249A (en) 1975-02-18

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US44896674 Expired - Lifetime US3866249A (en) 1974-03-07 1974-03-07 Posterior chamber artificial intraocular lens

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US (1) US3866249A (en, 2012)
JP (1) JPS50122098A (en, 2012)
AR (1) AR202741A1 (en, 2012)
BR (1) BR7501277A (en, 2012)
DE (1) DE2510099A1 (en, 2012)
EG (1) EG11637A (en, 2012)
ES (1) ES435427A1 (en, 2012)
FR (1) FR2262956B3 (en, 2012)
GB (1) GB1474139A (en, 2012)
IL (1) IL46637A (en, 2012)
IN (1) IN142427B (en, 2012)
IT (1) IT1051606B (en, 2012)
NL (1) NL7502390A (en, 2012)
SE (1) SE7502484L (en, 2012)

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US3991426A (en) * 1975-02-14 1976-11-16 Leonard Flom Posterior chamber artificial intraocular lens with retaining means and instruments for use therewith
US4014049A (en) * 1976-04-07 1977-03-29 American Optical Corporation Artificial intraocular lens and supporting system therefor
US4053953A (en) * 1976-01-14 1977-10-18 Leonard Flom Posterior chamber artificial intraocular lens with retaining means and instruments for use therewith adapted to provide extraocular confirmation of operative engagement
US4056855A (en) * 1976-04-07 1977-11-08 Charles Kelman Intraocular lens and method of implanting same
US4139915A (en) * 1977-03-21 1979-02-20 American Optical Corporation Artificial intraocular lens
DE3018011A1 (de) * 1979-05-14 1980-12-04 Kurt Dr Morcher Kuenstliche intraocularlinse mit einer halterung zur befestigung der linse in der hinteren augenkammer
US4242762A (en) * 1979-07-25 1981-01-06 Tennant Jerald L Posterior encapsuled implant lens
US4244060A (en) * 1978-12-01 1981-01-13 Hoffer Kenneth J Intraocular lens
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US4316291A (en) * 1979-05-03 1982-02-23 Severin Stanford L Intraocular lens structure
US4328595A (en) * 1979-08-30 1982-05-11 Sheets John H Intraocular lens
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WO1983000998A1 (en) * 1981-09-18 1983-03-31 Henry Mark Clayman Posterior chamber intra-ocular transplant device
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US3913148A (en) * 1974-12-26 1975-10-21 Ernst W Potthast Intraocular lens apparatus
US3991426A (en) * 1975-02-14 1976-11-16 Leonard Flom Posterior chamber artificial intraocular lens with retaining means and instruments for use therewith
US3979780A (en) * 1975-04-07 1976-09-14 Revlon, Inc. Intraocular lens and supporting system therefor
US3975779A (en) * 1975-04-09 1976-08-24 American Optical Corporation Artificial intraocular lens and supporting system therefor
US4053953A (en) * 1976-01-14 1977-10-18 Leonard Flom Posterior chamber artificial intraocular lens with retaining means and instruments for use therewith adapted to provide extraocular confirmation of operative engagement
US4014049A (en) * 1976-04-07 1977-03-29 American Optical Corporation Artificial intraocular lens and supporting system therefor
US4056855A (en) * 1976-04-07 1977-11-08 Charles Kelman Intraocular lens and method of implanting same
US4139915A (en) * 1977-03-21 1979-02-20 American Optical Corporation Artificial intraocular lens
USRE31626E (en) * 1978-12-01 1984-07-10 Intraocular lens
US4244060A (en) * 1978-12-01 1981-01-13 Hoffer Kenneth J Intraocular lens
US4316291A (en) * 1979-05-03 1982-02-23 Severin Stanford L Intraocular lens structure
DE3018011A1 (de) * 1979-05-14 1980-12-04 Kurt Dr Morcher Kuenstliche intraocularlinse mit einer halterung zur befestigung der linse in der hinteren augenkammer
US4285072A (en) * 1979-05-14 1981-08-25 Harry H. Leveen Anterior-posterior intraocular lens
US4242762A (en) * 1979-07-25 1981-01-06 Tennant Jerald L Posterior encapsuled implant lens
US4328595A (en) * 1979-08-30 1982-05-11 Sheets John H Intraocular lens
US4298994A (en) * 1979-10-26 1981-11-10 Clayman Henry M Posterior chamber intra-ocular transplant device
US4601720A (en) * 1981-02-24 1986-07-22 Sinskey Robert M Intraocular lens assembly
US4424597A (en) 1981-05-13 1984-01-10 Inprohold Establishment Posterior chamber implant lens
EP0064770A3 (en) * 1981-05-13 1983-01-05 Inprohold Establishment Lens for implantation in the posterior chamber
US4403353A (en) * 1981-06-25 1983-09-13 Tennant Jerald L Anterior chamber implant lens
WO1983000998A1 (en) * 1981-09-18 1983-03-31 Henry Mark Clayman Posterior chamber intra-ocular transplant device
US4578078A (en) * 1982-04-02 1986-03-25 Minnesota Mining And Manufacturing Company Intraocular lens with asymetric vaulted support loops
US4612012A (en) * 1982-07-28 1986-09-16 White Thomas C Corneal implant
US4562600A (en) * 1983-10-18 1986-01-07 Stephen P. Ginsberg Intraocular lens
EP0166051A1 (en) * 1984-06-28 1986-01-02 Ceskoslovenska akademie ved Process for fabricating an intraocular lens
US4971732A (en) * 1984-06-28 1990-11-20 Ceskoslovenska Academie Ved Method of molding an intraocular lens
USRE34448E (en) * 1985-12-04 1993-11-16 Allergan, Inc. Staking anchor for soft IOL
US4834751A (en) * 1985-12-04 1989-05-30 Allergan, Inc. Staking ring for soft IOL
US4894062A (en) * 1985-12-04 1990-01-16 Allergan, Inc. Staking anchor for soft IOL
US4790846A (en) * 1985-12-09 1988-12-13 Allergan Pharmaceuticals, Inc. Haptic to optic attachment for a soft IOL
US4880426A (en) * 1985-12-09 1989-11-14 Allergan, Inc. Haptic to optic attachment for a soft IOL
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US4994083A (en) * 1986-07-22 1991-02-19 Ceskoslovenska Akademie Ved Soft intracameral lens
US4734096A (en) * 1987-02-05 1988-03-29 Gosudarstvenny Institut Usovershenstvovania Vrachei Intraocular prosthetic lens
US4778464A (en) * 1987-04-08 1988-10-18 Kievsky Gosudarstvenny Institut Usovershenstvovania Vrachei Intraocular prosthetic lens
US5019099A (en) * 1987-07-02 1991-05-28 Nordan Lee T Intraocular multifocal lens method for correcting the aphakic eye
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NL7502390A (nl) 1975-09-09
IL46637A (en) 1977-01-31
IL46637A0 (en) 1975-04-25
AR202741A1 (es) 1975-07-15
AU7845275A (en) 1976-08-26
EG11637A (en) 1978-03-29
JPS50122098A (en, 2012) 1975-09-25
DE2510099A1 (de) 1975-09-11
FR2262956B3 (en, 2012) 1977-10-28
FR2262956A1 (en, 2012) 1975-10-03
IT1051606B (it) 1981-05-20
IN142427B (en, 2012) 1977-07-09
ES435427A1 (es) 1976-12-16
GB1474139A (en) 1977-05-18
SE7502484L (en, 2012) 1975-09-08
BR7501277A (pt) 1975-12-02

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