WO1997030657A1 - Implant intraoculaire myopique - Google Patents
Implant intraoculaire myopique Download PDFInfo
- Publication number
- WO1997030657A1 WO1997030657A1 PCT/FR1997/000306 FR9700306W WO9730657A1 WO 1997030657 A1 WO1997030657 A1 WO 1997030657A1 FR 9700306 W FR9700306 W FR 9700306W WO 9730657 A1 WO9730657 A1 WO 9730657A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- posterior
- extensions
- implant
- face
- anterior
- Prior art date
Links
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, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1602—Corrective lenses for use in addition to the natural lenses of the eyes or for pseudo-phakic 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, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics
Definitions
- the present invention relates to an intraocular implant for correcting myopia. More specifically, the invention relates to an intraocular implant for correcting myopia which is intended to be placed in the posterior chamber of a phakic eye, that is to say of an eye whose did not remove the lens during a cataract removal operation.
- intraocular implant intended to correct myopia.
- the first type of implant it is intended to be placed in the anterior chamber of the eye.
- Figure 1 attached there is shown in horizontal section a human eye therefore comprising the cornea 10, the iris 12 with the pupil 14 and the lens 16 contained in the capsular bag 18 itself fixed by zonules 21 on the wall internal of the eye.
- the anterior chamber 20 is called the internal space of the eye which extends between the cornea 10 and the iris 12.
- the entire internal part of the eye is posterior to the posterior chamber.
- iris 14 This posterior chamber therefore comprises a zone 22 which extends between the iris 12 and the anterior face of the lens 16 and a zone 24 set back relative to the lens 16.
- the optical part of the implant In the first type of myopic implant, it is placed in the anterior chamber 20.
- the optical part of the implant In this case, one of the difficulties encountered is that, in order to be able to effectively correct myopia, the optical part of the implant necessarily has a relatively thick edge. Given the reduced dimensions of the anterior chamber, there is therefore a real risk that the edge of the optical part of the implant, placed in the anterior chamber, traumatizes the internal face of the cornea 10. Such trauma can lead to serious consequences since the cells of the internal face of the traumatized cornea cannot regenerate and this affection tends to develop towards the central part of the cornea, that is to say that which plays the most important role in vision.
- the present invention relates to the second type of implant, that is to say a posterior chamber implant for the phakic eye.
- the implant After being placed in zone 22 of the posterior chamber, the implant is subjected to pressure effects resulting from the aqueous humor and the vitreous humor present in the anterior chamber and the posterior chamber and external pressures that can be applied to the entire eye. It is necessary that, under the effect of these different pressures, the implant does not risk leaving the posterior chamber to pass into the anterior chamber.
- An object of the present invention is to provide a myopic intraocular implant for posterior phakic chamber which better solves the problems stated above, in particular by better allowing the respective deformations of the lens and the iris, while ensuring a very good retention of the implant in the posterior chamber.
- the posterior chamber intraocular implant for correcting myopia of a phakic eye comprising a substantially circular optical part limited by an anterior diopter and a posterior diopter and a haptic part
- said part haptic comprises at least two extensions connected to the periphery of the optical part, the ends of which are separated by a diametrical distance greater than the diameter of an expanded pupil and at least two fixing elements on the wall of the chamber
- the anterior face of each extension comprising a toric portion connected to the anterior diopter, said toric portions being capable of allowing the posterior face of the iris to slide on said implant
- the posterior face of each extension comprising a toric portion connected to the posterior diopter and forming a bearing portion on the periphery of the lens and a connection portion
- the posterior diopter and the toric portions of the posterior face of said extensions defining a recess relative to the surface (S) containing said portions connection to allow the free modification of the curvature of the anterior surface of the lens.
- the intraocular implant is well maintained in the posterior chamber, whatever the degree of dilation of the pupil of the iris. It is also understood that, thanks to the presence of the recess formed in the posterior face of the optical part of the implant, a free modification of the curvature of the anterior face of the lens is authorized. It can also be seen that, thanks to the presence of the toric support portions, the implant is in contact with the anterior face of the lens only through a peripheral zone not directly interested in vision and over a very small annular zone.
- the iris can freely slide relative to the anterior face of the implant during dilation or contraction of the pupil without 'there is a risk of "sticking" of the iris on the implant.
- FIG. 2 is a front elevational view of the myopic implant according to the invention.
- FIG. 3 is a side view of the implant of Figure 2; - Figure 4 is a top view showing the placement of the myopic implant in the posterior chamber of the eye; and - Figure 5 is a detail view of the implant showing a handle for fixing the haptic part.
- the myopic implant comprises a substantially circular optical part 30 of radius D.
- this diameter is equal to 5.5 mm. More generally, the diameter D is between 4 and 6 mm.
- the implant has an extension respectively referenced 32 and 34 which are connected to the periphery 30a of the optical part.
- These extensions belong to the haptic part of the implant. In the example considered, the extensions are limited by a free edge 34a and 32a of substantially semi-circular shape.
- the haptic part also comprises two lateral portions 36 and 38 which connect the extensions 32 and 34 on either side of the optical part 30.
- the optical part 30 is of course limited by an anterior diopter 40 which , in the example considered, is planar, and by a posterior diopter 42 which is concave.
- the front face of the extensions 32 and 34 is limited by a portion of toric surface 44 which is connected to the periphery of the front diopter 40. If we now consider the rear face of the extensions 32 and 34, we see that it is defined firstly by a toric surface portion 46 forming a bearing surface and then by a connection zone 48, which is also toric or frustoconical. It can also be seen that, with respect to the surface S which contains the connection surfaces 48 of the extensions 32 and 34, the posterior diopter 42 and the toric zone 46 define a posterior recess 50 whose function will be explained later.
- the lateral portions 36 and 38 have anterior and posterior faces which extend the anterior and posterior faces of the extensions 32 and 34.
- the diametrical distance between the ends of the extensions 32 and 34 referenced L in the figures , is substantially greater than the diameter D of the optical part.
- L is equal to 8 mm. More generally, L is between 7 and 9 mm.
- the haptic part of the implant comprises, in addition to the extensions 32 and 34 and preferably the lateral zones 36 and 38, two fixing handles 50 and 52 and 54, which have a connection end 52a, 54a on the extension 32 or 34 and a free end 54b, 52b.
- the handles 52 and 54 are said to be of the "C" type.
- each loop 52 and 54 has an angulation in a plane containing the axis optical.
- the loop 54 is shown more particularly, it can be seen that the first portion 54 ′ of the loop closest to the end 54a forms an angle ⁇ with a plane orthogonal to the optical axis and that the second portion 54 "closer to the end 54b makes an angle b with this same direction.
- the angulation corresponding to the angle a tends to separate the handle from the anterior face of the optical part while the angulation b This angulation means that, under the effect of stresses applied to the handles in the direction of the main plane of the implant, any axial displacement of the implant is substantially avoided.
- the means for fixing the haptic part could have a shape other than the handles shown in FIG. 2.
- a passage making the recess 50 communicate with the interior of the eye so to obtain a pressure equalization.
- the total width L ′ of the implant at the level of the lateral zones 36 and 38 is also possible to provide for the total width L ′ of the implant at the level of the lateral zones 36 and 38 to be such that a natural passage takes place between the bearing zones of the lateral portions and the anterior face of the lens. In this case, the equi-pressure is obtained automatically.
- the lateral size of the handles 52 and 54 is less than or equal to L ′.
- the lateral portions of the haptic part each have a substantially straight free edge which is connected to the substantially semi-circular edges of said extensions.
- Figure 4 shows the myopic implant placed in the posterior chamber 22 of the eye, the lens being at rest, that is to say without accommodating it.
- This figure shows that the anterior face of the implant is in contact with the posterior face of the iris 12 via the toric surface 44, which allows the iris to slide on the anterior face of the implant. during dilations or contractions of the pupil.
- FIG. 4 also shows that the posterior face of the implant is in contact with the anterior face of the lens 16a via the toric bearing surface 46 which effectively plays its role of support as the radius of curvature of the anterior surface of the lens decreases to achieve accommodation, Figure 4 showing the lens in its "non-accommodation" state.
- the contact between the lens and the surface 46 is a contact between a sphere and a portion of toric surface.
- the contact surface is therefore annular and very small. The first consequence of this is that this contact occurs on the peripheral zone of the lens and not on its central zone. This has the second consequence that the central part of the lens is opposite the recess 50 of the posterior face of the implant.
- the projection of the handles on a plane orthogonal to the optical axis of the implant is entirely contained in the portion of said plane limited by the straight lines of the plane containing the projections on this plane of the free edges of the lateral portions of the haptic part. .
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97906223A EP0886504A1 (fr) | 1996-02-20 | 1997-02-19 | Implant intraoculaire myopique |
US09/125,371 US6110202A (en) | 1996-02-20 | 1997-02-19 | Intraocular implant for correcting short-sightedness |
JP9529850A JP2000504612A (ja) | 1996-02-20 | 1997-02-19 | 近視矯正用眼内インプラント |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9602053A FR2744908B1 (fr) | 1996-02-20 | 1996-02-20 | Implant intraoculaire myopique |
FR96/02053 | 1996-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997030657A1 true WO1997030657A1 (fr) | 1997-08-28 |
Family
ID=9489374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1997/000306 WO1997030657A1 (fr) | 1996-02-20 | 1997-02-19 | Implant intraoculaire myopique |
Country Status (6)
Country | Link |
---|---|
US (1) | US6110202A (fr) |
EP (1) | EP0886504A1 (fr) |
JP (1) | JP2000504612A (fr) |
CA (1) | CA2246764A1 (fr) |
FR (1) | FR2744908B1 (fr) |
WO (1) | WO1997030657A1 (fr) |
Cited By (4)
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---|---|---|---|---|
WO1998017205A1 (fr) * | 1996-10-24 | 1998-04-30 | International Vision, Inc. | Lentille intra-oculaire phakique a auto-centrage |
WO2001008606A1 (fr) * | 1999-08-02 | 2001-02-08 | Ioltechnologie-Production | Implant intraoculaire precristallinien |
FR2800596A1 (fr) * | 1999-11-10 | 2001-05-11 | Ioltechnologie Production | Implant intraoculaire precristallinien |
FR2835177A1 (fr) * | 2002-01-25 | 2003-08-01 | Biotech | Lentille intraoculaire refractive de chambre posterieure |
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US6554859B1 (en) | 2000-05-03 | 2003-04-29 | Advanced Medical Optics, Inc. | Accommodating, reduced ADD power multifocal intraocular lenses |
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US6638305B2 (en) | 2001-05-15 | 2003-10-28 | Advanced Medical Optics, Inc. | Monofocal intraocular lens convertible to multifocal intraocular lens |
US7156859B2 (en) * | 2001-07-23 | 2007-01-02 | Fos Holding S.A. | Device for separating the epithelium layer from the surface of the cornea of an eye |
IL145015A0 (en) * | 2001-08-21 | 2002-06-30 | Nun Yehoshua Ben | Accommodating lens |
US20030055499A1 (en) * | 2001-09-14 | 2003-03-20 | Nguyen Tuan Anh | Low profile intraocular lenses |
US7763069B2 (en) | 2002-01-14 | 2010-07-27 | Abbott Medical Optics Inc. | Accommodating intraocular lens with outer support structure |
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US20040082993A1 (en) | 2002-10-25 | 2004-04-29 | Randall Woods | Capsular intraocular lens implant having a refractive liquid therein |
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US20050131534A1 (en) * | 2003-11-14 | 2005-06-16 | Rozakis George W. | Posterior chamber phakic intraocular lens |
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JP7074960B2 (ja) | 2016-08-24 | 2022-05-25 | カール ツァイス メディテック アーゲー | デュアルモード調節型-非調節型眼内レンズ |
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- 1996-02-20 FR FR9602053A patent/FR2744908B1/fr not_active Expired - Fee Related
-
1997
- 1997-02-19 EP EP97906223A patent/EP0886504A1/fr not_active Ceased
- 1997-02-19 US US09/125,371 patent/US6110202A/en not_active Expired - Fee Related
- 1997-02-19 CA CA002246764A patent/CA2246764A1/fr not_active Abandoned
- 1997-02-19 WO PCT/FR1997/000306 patent/WO1997030657A1/fr not_active Application Discontinuation
- 1997-02-19 JP JP9529850A patent/JP2000504612A/ja active Pending
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US4585456A (en) * | 1984-03-12 | 1986-04-29 | Ioptex Inc. | Corrective lens for the natural lens of the eye |
US4769035A (en) * | 1987-06-02 | 1988-09-06 | Kelman Charles D | Artificial lens and the method for implanting such lens |
WO1991013597A1 (fr) * | 1990-03-16 | 1991-09-19 | Feaster Fred T | Lentille intraoculaire epiphakique et procedes d'implantation |
EP0477109A1 (fr) * | 1990-09-04 | 1992-03-25 | Laboratoires Domilens Societe Anonyme | Implant intra-oculaire pour correction de la myopie |
EP0492126A2 (fr) * | 1990-12-27 | 1992-07-01 | American Cyanamid Company | Lentille intraoculaire composite et procédé de fabrication |
DE4211265C1 (fr) * | 1992-04-03 | 1993-07-29 | Adatomed Pharmazeutische Und Medizintechnische Gesellschaft Mbh, 8000 Muenchen, De | |
WO1995028897A2 (fr) * | 1994-04-19 | 1995-11-02 | Mcdonald Henry H | Cristallin artificiel inserable entre l'iris et le cristallin naturel |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998017205A1 (fr) * | 1996-10-24 | 1998-04-30 | International Vision, Inc. | Lentille intra-oculaire phakique a auto-centrage |
WO2001008606A1 (fr) * | 1999-08-02 | 2001-02-08 | Ioltechnologie-Production | Implant intraoculaire precristallinien |
FR2797177A1 (fr) * | 1999-08-02 | 2001-02-09 | Ioltechnologie Production | Implant intraoculaire precristallinien |
FR2800596A1 (fr) * | 1999-11-10 | 2001-05-11 | Ioltechnologie Production | Implant intraoculaire precristallinien |
WO2001034066A1 (fr) * | 1999-11-10 | 2001-05-17 | Ioltechnologie-Production | Implant intraoculaire precristallinien |
FR2835177A1 (fr) * | 2002-01-25 | 2003-08-01 | Biotech | Lentille intraoculaire refractive de chambre posterieure |
Also Published As
Publication number | Publication date |
---|---|
JP2000504612A (ja) | 2000-04-18 |
FR2744908A1 (fr) | 1997-08-22 |
EP0886504A1 (fr) | 1998-12-30 |
CA2246764A1 (fr) | 1997-08-28 |
FR2744908B1 (fr) | 1998-06-12 |
US6110202A (en) | 2000-08-29 |
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