WO2001005327A2 - New intraocular lens - Google Patents
New intraocular lens Download PDFInfo
- Publication number
- WO2001005327A2 WO2001005327A2 PCT/EP2000/006486 EP0006486W WO0105327A2 WO 2001005327 A2 WO2001005327 A2 WO 2001005327A2 EP 0006486 W EP0006486 W EP 0006486W WO 0105327 A2 WO0105327 A2 WO 0105327A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- haptic
- intraocular lens
- lens according
- eye
- haptic means
- Prior art date
Links
- 238000002513 implantation Methods 0.000 claims abstract description 8
- 230000003287 optical effect Effects 0.000 claims description 14
- 208000002177 Cataract Diseases 0.000 abstract description 7
- 208000008516 Capsule Opacification Diseases 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 210000000695 crystalline len Anatomy 0.000 description 41
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000002560 therapeutic procedure Methods 0.000 description 4
- 239000007943 implant Substances 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 206010007747 Cataract congenital Diseases 0.000 description 2
- 241000542420 Sphyrna tudes Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 201000009487 Amblyopia Diseases 0.000 description 1
- 206010007766 Cataract traumatic Diseases 0.000 description 1
- 208000010412 Glaucoma Diseases 0.000 description 1
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 1
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 239000000560 biocompatible material Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002919 epithelial cell Anatomy 0.000 description 1
- 230000004373 eye development Effects 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- 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
- A61F2/0077—Special surfaces of prostheses, e.g. for improving ingrowth
- A61F2002/009—Special surfaces of prostheses, e.g. for improving ingrowth for hindering or preventing attachment of biological tissue
-
- 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
- A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics
-
- 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
- A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics
- A61F2002/1683—Intraocular lenses having supporting structure for lens, e.g. haptics having filiform haptics
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0082—Additional features; Implant or prostheses properties not otherwise provided for specially designed for children, e.g. having means for adjusting to their growth
Definitions
- the present invention relates to an intraocular lens (IOL) that is specifically designed to be implanted in the capsular bag of an infant of about 0 to 2 months age.
- IOL intraocular lens
- IOL intraocular lens
- PMMA polymethylmethacrylate
- silicones are commercially available.
- these IOLs comprise an optical body having an optical part with a predetermined refractive power and haptic means for securing the implant in the capsular bag.
- Many types of such IOLs have been suggested with different designs, flexibility and characteristics that facilitate their insertion through a surgical incision in the eye.
- cataract is a degenerative disorder from which elderly persons suffer, but in certain cases also newborns or infants are subjected from an impaired lens complication named unilateral congenital cataract.
- An impaired vision during the formative period of human senses may affect the normal development of the eye and result in deep amblyopia (lazy eye).
- the presently accepted treatment of congenital cataract is prompt optical correction and an aggressive occlusion therapy with regular follow-up. This is a quite complex and demanding therapy which at worst may cause complications such as the development of secondary glaucoma in the eye(s) having the defect lens removed, but not replaced with an implant lens until the eye has grown sufficiently. It is therefore a demand for alternative therapies in particular for infants of 0 to 2 months age.
- a feasible therapy for infants older than one year is surgically removing the defect lens from the capsular bag and immediately implanting an IOL through an incision into the capsular bag and positioning it with its haptic means.
- Journal of Cataract Refractive Surgery, 1997, Vol. 23 (1), pp. 618-622 (E Dahan et al.) it is reported a refractive study of children having undergone implantation of intraocular lenses in the posterior chamber of the eye. The children had received lenses of sizes between 10.5 and 12.0 mm having optical plates between 5.5 and 6.5 mm dependent on their age. The lenses of the study were of the same overall design as adult lenses.
- the present invention is directed to an intraocular lens for pediatric use comprising an optical part and two arcuate haptic means adapted for implantation in the capsular bag of the infant eye, in which the haptic means, when compressed by the eye, after its implantation, together form a substantially full circle in crossection.
- the shape of the eye and its compressive forces can vary among different individuals. For this reason, it is obvious to the skilled person that an exactly full circle will not always be obtained. In some individuals the haptic means will be somewhat more compressed than intended and the two arcuate haptic means will make a small overlap or come in contact, resulting in that their combined shape will deviate from a perfect circle, but remains substantially circular.
- the intraocular lens has a haptic angle of at least 10°, or preferably at least 15° and most preferably about 20°.
- the haptic angle is defined herein as the angle between the haptic means and plane perpendicular to the optical axis of the lens.
- the haptic means thereby preferably extend until they reach an equator plane of the lens in its non-compressed state.
- the angle between a haptic means and the equator plane preferably is about 180°.
- the diameter of the mentioned enclosing circle is less than about 8 mm and more preferably between about 7 and 8 mm.
- the diameter of the optical part of lens is suitably less than about 5 mm and preferably between about 4 and 5 mm.
- the haptic means have a part with reduced width compared to the part extending from the haptic junctions and that the haptic means have end points with increased width.
- the haptic means have a first part extending from the haptic junctions to about half of their total length and a second part with reduced width compared to said first part.
- a preferred reduction in width of the second part of the haptics is from about 15 to 25% compared to the first part extending from the haptic junctions.
- the haptic means can further comprise a third part having a larger width than any of their first and second parts. The third part normally constitutes the end part of haptic means and is designed to make the handling of the lens with a forceps easier for the surgeon during its insertion.
- Fig. 1 is a side view of a pediatric IOL according the present invention.
- Fig. 2 is an IOL according to the present invention seen from above.
- a preferred embodiment of an IOL according to the present invention has a central circular lens body ( 1 ) with an optical part of a predetermined refractive power and two identical flexible haptic means (2) and (3).
- the haptic means are connected to the lens body by two diametrically opposite haptic junctions (4) and (5).
- the lens body and the haptic means is made in one piece of PMMA- HSM (polymethylmethacrylate lens treated with a heparin coating process) according to a compression molding technology.
- the haptic means are extended forwards of the lens body (to the front of the eye) and they have both an haptic angle of 20° which is defined as the angle between the haptic means and plane perpendicular to the optical axis of the lens.
- the haptic angle is considerably larger than in adult lenses selected to obtain the optimal anatomic fit in infants of the age of about 0 to 2 months, while at the same time providing for the possibility to design lenses with different optical powers and thicknesses with a sufficient distance to the iris. It is also important to select a haptic angle that enables an easy surgical insertion of the lens.
- each of the two haptic means of the lens has an identical arcuate shape which is close semi-circular given that they extend until they reach the equator plane (6) and thereby substantially have an angle of 180° to such a plane.
- the lens is entirely enclosed within a circle having a diameter of 7.8 mm.
- This lens is designed so it can be compressed to a circle of 7.0 mm after being implanted in the capsular bag of an infant eye.
- the haptic means have been designed with varying width from the haptic junction to their end.
- the haptic means has a first part with an initial width of 0.15 mm from the haptic junction to half of the total length of the haptic means and a second part with a reduced width of 0.12 mm extending until a position close to the end of haptic means diametrically opposite from the haptic junctions at which the width again increase from 0.12 mm to 0.16 mm in a third part of the haptic means.
- the length of the third part is about 2 mm.
- the second part with reduced width imparts an improved flexibility of the haptic means, which will ease the insertion of lens in the capsular bag.
- the differences in width along the haptic leads to that the reaction forces of the haptic means against the capsular bag will not be perfectly identical at all positions. However, this has not practical consequences for the performance of the lens and its mentioned characteristics.
- Intraocular lenses having the above disclosed features will, after surgical insertion in the eye, effectively obstruct the formation of secondary cataract and minimize any interference with the ocular growth of the infant or neonate eye.
Landscapes
- 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)
- Prostheses (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU65624/00A AU6562400A (en) | 1999-07-20 | 2000-07-19 | New intraocular lens |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9902743A SE9902743D0 (en) | 1999-07-20 | 1999-07-20 | New Intraocular Lens |
SE9902743-5 | 1999-07-20 | ||
US16482699P | 1999-08-02 | 1999-08-02 | |
US60/164,826 | 1999-08-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001005327A2 true WO2001005327A2 (en) | 2001-01-25 |
WO2001005327A3 WO2001005327A3 (en) | 2001-11-29 |
Family
ID=26663623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/006486 WO2001005327A2 (en) | 1999-07-20 | 2000-07-19 | New intraocular lens |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU6562400A (en) |
WO (1) | WO2001005327A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7018410B1 (en) | 2002-08-05 | 2006-03-28 | Mehdi Vazeen | Accommodating intraocular lens |
WO2013189945A1 (en) | 2012-06-19 | 2013-12-27 | Nuovo Pignone Srl | Wet gas compressor and method |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4494254A (en) * | 1982-05-03 | 1985-01-22 | Osvaldo Lopez | Intraocular lens |
US4535488A (en) * | 1982-09-30 | 1985-08-20 | Haddad Heskel M | Anterior-posterior chamber intraocular lens |
US4687484A (en) * | 1983-12-12 | 1987-08-18 | Kaplan Linda J | Anterior chamber intraocular lens |
US4842602A (en) * | 1988-09-13 | 1989-06-27 | Allergan, Inc. | Endocapsular intraocular lens |
AU2710197A (en) * | 1996-05-17 | 1997-12-09 | Helmut Payer | An ocular implant |
SE9801573D0 (en) * | 1998-05-05 | 1998-05-05 | Pharmacia & Upjohn Bv | New IOL |
-
2000
- 2000-07-19 WO PCT/EP2000/006486 patent/WO2001005327A2/en active Application Filing
- 2000-07-19 AU AU65624/00A patent/AU6562400A/en not_active Abandoned
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7018410B1 (en) | 2002-08-05 | 2006-03-28 | Mehdi Vazeen | Accommodating intraocular lens |
WO2013189945A1 (en) | 2012-06-19 | 2013-12-27 | Nuovo Pignone Srl | Wet gas compressor and method |
Also Published As
Publication number | Publication date |
---|---|
AU6562400A (en) | 2001-02-05 |
WO2001005327A3 (en) | 2001-11-29 |
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