WO2005016190A1 - Implant intraoculaire souple de faible epaisseur - Google Patents
Implant intraoculaire souple de faible epaisseur Download PDFInfo
- Publication number
- WO2005016190A1 WO2005016190A1 PCT/FR2004/050351 FR2004050351W WO2005016190A1 WO 2005016190 A1 WO2005016190 A1 WO 2005016190A1 FR 2004050351 W FR2004050351 W FR 2004050351W WO 2005016190 A1 WO2005016190 A1 WO 2005016190A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arms
- optical
- contact
- capsular bag
- arm
- 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.)
- Ceased
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 or corneal implants; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1613—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
- A61F2/1616—Pseudo-accommodative, e.g. multifocal or enabling monovision
Definitions
- the present invention relates to a flexible thin intraocular implant. More specifically, the invention relates to an intraocular implant whose thickness of the optical part is reduced and which however has sufficient mechanical properties to ensure good retention of the optical part in the capsular bag.
- intraocular implants are most often used to replace the natural lens after it has been removed during a cataract operation.
- the surgical techniques currently available, in particular for carrying out this phakoemulsification ablation, make it possible by making only a very small incision in the cornea of the order of 3 mm. It is therefore advantageous to have intraocular implants which can be inserted into the capsular bag through an incision having this same reduced dimension of the order of 3 mm. In fact, we know that the smaller the incision, the faster the scarring of the eye.
- an intraocular implant is constituted, on the one hand, by an optical part which constitutes the optical system for correcting the revision and, on the other hand, by a haptic part which serves to maintain the optical part in the capsular bag.
- an optical part which constitutes the optical system for correcting the revision
- a haptic part which serves to maintain the optical part in the capsular bag.
- the thickness of the optical part along its optical axis results on the one hand from the radii of curvature of the anterior diopter and from the posterior diopter and, on the other hand, from the thickness of the edge of this optical part, thickness which must allow the fixing of the optical part on the periphery of the optical part.
- To increase the radii of curvature of the diopters, and therefore decrease the thickness of the optics it is possible to use materials transparencies with a high optical index. However, it is not possible to use materials with very high indices, since it is established that they generate induced reflection phenomena disturbing the vision of the patient wearing the implant.
- An object of the present invention is to provide an intraocular implant produced with a flexible material which has improved anteroposterior axial stability while allowing the production of an implant whose optical part has a reduced thickness.
- the intraocular implant for capsular bag comprises an optical part of substantially circular shape having: an edge, an anterior diopter and a posterior diopter; and a haptic part comprising at least two arms extending radially with respect to the optical part, said implant being characterized in that each arm comprises:. a running game. a connection end at the edge of the optical part, said connection end having a thickness, in the direction of the optical axis, less than that of the current part to form a bending line substantially tangent to the optical part; and. a contact end having a contact edge on the inner wall of the capsular bag; said contact edge being arranged on a circle concentric with the optical part with a diameter greater than that of the capsular bag and at least equal to 10.5 mm; .
- This rotation stably displaces the optical part towards the posterior wall of the capsular bag due in particular to the particular angulation of the haptic arms before their deformation which means that the contact edges are "in front" of the flexion lines.
- a good stabilization of the optical part is thus obtained by pressing the posterior diopter on the posterior wall of the capsular bag.
- this posterior projection which brings about an intimate contact between the posterior diopter and the posterior capsule with an effective force avoids or appreciably limits the risks of proliferation of cells on the posterior part of the capsular bag, which obviously disturbs the vision of the wearer. the implant.
- the intraocular implant is characterized in that the contact end of each arm is bent backwards with respect to the current part of the arm by forming an elbow so that the end part or the contact end is closer to the optical plane of the optical part than the elbow, whereby, under the effect of the stress applied by the capsular bag, the connection ends come to bear on the anterior wall of the capsular bag.
- the rearward projection of the optical part of the implant is made even more stable due to the angulation of the contact ends of the arms with their current part. Indeed, these end portions come to bear on the front face of the capsular bag and the current part of the arms behaves like pillars substantially orthogonal to the optical part holding the latter in a stable manner against the posterior wall of the capsular bag.
- the intraocular implant is characterized in that it further comprises at least two connecting pieces in the form of an arc of a circle concentric with the optical part, each end of each connecting piece being connected to an arm, said connecting pieces being arranged on the same circle.
- connecting pieces in the form of an arc of a circle concentric with the optical part between the haptic arms ensures the mutual stabilization of these by avoiding the risks of bending of these arms in the connection zone around pivot axes. parallel to the optical axis.
- FIG. 1A is a front view of a first embodiment of the implant
- FIG. 1B is a side view of the implant of Figure 1A
- - Figure 2A is a front view of a second embodiment of the implant according to the invention
- - Figure 2B is a side view of the implant of Figure 2A
- - Figure 3 is a partial vertical sectional view showing the deformation of the haptic arms of the implant when the latter is placed in the capsular bag
- - Figure 4 is a curve showing the axial displacement of the implant as a function of the compression of the haptic part
- - Figure 5 is a front view of the implant of Figure 2A placed in the capsular bag
- - Figure 6a is a front view of a third embodiment of the implant
- - Figure 6B is a side view of the implant of Figure 6A.
- the implant consists of an optical part 10 which has an anterior diopter 12, a posterior diopter 14 and a peripheral edge 16.
- This optic is substantially circular.
- the haptic part is constituted by two haptic sets respectively referenced 18 and 20. These two haptic sets 18 and 20 are identical and symmetrical with respect to the diameter DD 'of the optical part 10.
- the haptic assembly 18 is constituted by two radial arms 22 and 23, the mean lines LM of which are projected in the optical plane PP 'extend rays from the optical part 10.
- Each haptic arm 22 or 23 has a running part 22a, a connection end 22b at the periphery 16 of the optical part and a contact end 22c intended to come into contact with the wall of the capsular bag when the implant is put in place In this one.
- the middle line of the contact end 22c is substantially rectilinear.
- the connection end 22b has a very small cross section compared to that of the main part 22a of the arm at most equal to half of the latter, the main part 22a of the arm having a substantially constant cross section.
- the width I of the connection end is less than the width I 'of the current part of the arm and its thickness e is much less than the thickness e' of the current part of this arm.
- This reduction in thickness is such that it defines a posterior "step” which forms a "square edge” with the posterior diopter in the connection zone between the optical part and the arms.
- the length m of the connection end 22b, along its mean line, is much less than the length m 'of the entire arm.
- the connection end 22b thus defines a line of flexion or rotation ZZ ′ of the arm relative to the optical part which is substantially tangent to the periphery 16 of the optical part under the effect of the continuities applied to the contact ends.
- the arm comprises a single bending line which is defined by the connection end 22b.
- FIG. 1B shows that the mean line LM of the current part 22a of the arm 22 which is substantially rectilinear, forms an angle a with the optical plane PP 'towards the front. This angle a is preferably at least 5 degrees.
- the current part of the arm is arranged in the same half-space limited by the plane PP 1 as the anterior diopter 12 of the optical part.
- FIG. 1B also shows that the contact end 22c of the arm 22 forms an angle b with the main part 22a of this arm. The contact end 22c is "directed rearward".
- the angulation b which is between 90 degrees and 150 degrees and which is preferably 120 degrees is such that the contact end and, more precisely, its contact edge 26 is closer to the optical plane PP 'than the elbow 24.
- the angles a and b must be determined so that the contact edges 26 of the arms are "in front" of the bending lines z-z ', i.e. the bending lines are closer to the optical plane PP 1 than the contact edges 26 and the contact edges are in the half space limited by the plane PP 'optic containing the anterior diopter.
- the middle lines of the main part 22a and of the contact end 22c of the same arm are substantially arranged in the same plane containing the optical axis of the implant.
- the angle between the optical plane PP 'and the straight line joining the contact edge 26 to the bending line is at least equal to 1 degree towards the front.
- the arm 22 has a thickness much greater than that of its connection end 22b. Under the effect of the stresses applied to the arm, the deformation will be localized in the connection zone 22b and will not affect the elbow 24 which will remain undeformed.
- the contact edge 26 of each haptic arm has substantially the shape of an arc of a circle whose diameter is between 2.5 and 10.5 mm and preferably 10 mm which corresponds to the diameter of the capsular bag.
- the haptic assembly 18 preferably comprises, in addition to the radial arms 22 and 23, a connecting piece 28 in the form of an arc of a circle concentric with the optical part 10.
- the connecting piece 28 has two fixing ends 28a and 28b on the arms 22 and 23.
- the fixing ends 28a and 28b are located at the elbow 24 of each of the arms 22 and 23.
- the terminal contact edges 26 of the contact ends 22c and 23c of the arms are arranged on a circle C1 of center O whose diameter is substantially greater than the diameter of the capsular bag.
- the diameter of the circle C1 is at least equal to 10.5 mm and preferably between 11 and 11.5 mm.
- the elbows 24 of the arms as well as the connecting piece 28 are arranged on a circle C2 of center O and of diameter for example equal to 10 mm, that is to say substantially the diameter of the capsular bag.
- FIG. 3 we will explain the behavior of the implant when it is placed in the capsular bag.
- the capsular bag 30 with its equatorial zone 32, its posterior capsule 34 and the residual peripheral part 36 of its anterior capsule.
- the implant When the implant is placed in the capsular bag 30, the latter, and more precisely its equatorial zone 32, applies stress to the end parts 26 of the radial arms of the haptic assemblies 18 and 20 because these parts terminals are arranged at rest on a circle with a diameter greater than that of the equatorial zone of the capsular bag.
- This constraint causes the arm to flex in the very localized area of the connection end 22b of the arm around the bending axis zz 'due to the very reduced thickness of this area.
- Each arm therefore has a contact end 22c resting on the front part of the capsular bag and a running part 22a having a large angulation with the optical plane, which causes a support stable and large of the optical part 10 on the posterior capsule 34 thus ensuring high axial stability to the implant.
- the posterior diopter 14 is applied with pressure against the posterior capsule, this prevents the proliferation of cells on the capsular bag, this proliferation being liable to cloud the bag.
- the posterior diopter 14 has, with the periphery 16 of the optical part, a "square edge" 40 which further increases the effect of preventing cell proliferation.
- FIG. 4 gives the axial displacement curve A of the optics of the implant as a function of the compression C which depends on the difference between the diameter of the capsular bag and the external diameter of the implant at rest. The curve shows that even by a non-negligible difference E with respect to the theoretical diameter of the capsular bag, the axial displacement difference D is very reduced.
- Figures 2A and 2B we will describe a second embodiment of the implant according to the invention.
- the optical part 10 which is identical to the optical part of the implant of FIG. 1A and a haptic part.
- the haptic part is constituted by four radial arms 40, 42, 44 and 46 which are angularly offset by 90 degrees.
- Each arm 40 to 46 has exactly the same configuration as the arm 22 described in detail with reference to FIG. 1A.
- the arm 40 has a connection end 40b of reduced section, a running part 40a, a contact end 40c and a contact edge 41.
- the haptic part of the implant also includes four connecting pieces respectively referenced 48, 50 , 52 and 54. These connecting pieces are arranged on a circle C2 which has already been described in connection with FIG. 1A.
- Each connecting piece 48 has two connecting ends 48a, 48b for the connecting piece 48 which are connected to the arms 40 and 42 at their elbow 56. It should be added that the connecting pieces 48 to 54 have a reduced cross section for example from 0.25mm x 0.25mm. In fact, as will be explained later in connection with FIG. 4, when the arms 40 to 46 are bent, after the implant has been placed in the capsular bag, the connecting pieces 48 must be able to bend in because of the reduction in the circular angular distance between the elbows 56 of the two arms associated with the same connecting piece, for example 48.
- FIG. 4 shows that the radial arms 40 to 46 behave individually exactly like the arms of the implant shown in Figures 1A and 1B, the contact ends 40c, 42c, etc. coming to rest on the residual anterior capsule.
- the connecting pieces 48 to 54 deform elastically and their middle part 58 also comes into contact with the equatorial portion of the capsular bag. This increases the contact surface between the capsular bag and the haptic part and therefore decreases the pressure applied to the capsular bag. It goes without saying that we would not depart from the invention if the haptic part only had two diametrically opposite arms or three arms offset by 120 degrees. It also goes without saying that we would not depart from the invention if the contact ends of the haptic arms were an extension of the current part of these. In this case, the angle a between the current part of the arms and the optical plane PP 'could be very small, for example equal to 1 or 2 degrees.
- FIGS. 6A and 6B show the optical part 10 with its peripheral edge 16.
- the haptic part consists of two identical arms 60 and 62 diametrically opposite. Each arm has a running part 60a, 62a, and a connection end 60b, 62b which has the same shape and the same characteristics as the connection ends of the two other embodiments. In other words, these connection ends define bending lines z-z '.
- the haptic arms are devoid of "bent" contact ends. Consequently, the contact edge 64 of each arm is formed by the end of the main part 60a, 62a. the contact edges 64 must of course fill the conditions which have been set out in connection with the first two embodiments.
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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)
- Prostheses (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/566,228 US20070112426A1 (en) | 2003-08-04 | 2004-07-22 | Thin flexible intraocular implant |
| CA002534854A CA2534854A1 (fr) | 2003-08-04 | 2004-07-22 | Implant intraoculaire souple de faible epaisseur |
| EP04767912A EP1651146A1 (fr) | 2003-08-04 | 2004-07-22 | Implant intraoculaire souple de faible epaisseur |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0309595A FR2858544B1 (fr) | 2003-08-04 | 2003-08-04 | Implant intraoculaire souple de faible epaisseur |
| FR0309595 | 2003-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005016190A1 true WO2005016190A1 (fr) | 2005-02-24 |
Family
ID=34073002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2004/050351 Ceased WO2005016190A1 (fr) | 2003-08-04 | 2004-07-22 | Implant intraoculaire souple de faible epaisseur |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20070112426A1 (fr) |
| EP (1) | EP1651146A1 (fr) |
| CA (1) | CA2534854A1 (fr) |
| FR (1) | FR2858544B1 (fr) |
| WO (1) | WO2005016190A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006054178A3 (fr) * | 2004-11-19 | 2006-09-28 | Bausch & Lomb | Implant intraoculaire mince |
| AU2004296880B2 (en) * | 2003-12-09 | 2011-02-24 | Johnson & Johnson Surgical Vision, Inc. | Foldable intraocular lens and method of making |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7615073B2 (en) | 2003-12-09 | 2009-11-10 | Advanced Medical Optics, Inc. | Foldable intraocular lens and method of making |
| US20080086208A1 (en) * | 2004-08-24 | 2008-04-10 | Nordan T Lee | Foldable Intraocular Lens With Adaptable Haptics |
| FR2931356B1 (fr) * | 2008-05-21 | 2016-07-01 | Medicontur Orvostechnikai Korlatolt Felelossegu Tarsasag | Lentille intraoculaire |
| FR2979816A1 (fr) * | 2011-09-14 | 2013-03-15 | Qmp Holding Gmbh | Dispositif perfectionne d'haptiques pour implant de sulcus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4888012A (en) * | 1988-01-14 | 1989-12-19 | Gerald Horn | Intraocular lens assemblies |
| EP1108402A2 (fr) * | 1999-12-14 | 2001-06-20 | Boehm, Hans-Georg, Dr. rer. nat. | Lentille intraoculaire capable de s'accommoder |
| WO2002009620A1 (fr) * | 2000-08-02 | 2002-02-07 | Advanced Medical Optics, Inc. | Accommodation d'une lentille intraoculaire munie d'une structure de suspension |
| WO2003015668A1 (fr) * | 2001-08-15 | 2003-02-27 | Humanoptics Ag | Implant intraoculaire |
| WO2003059196A2 (fr) * | 2002-01-14 | 2003-07-24 | Advanced Medical Optics, Inc. | Accommodation d'une lentille intraoculaire au moyen d'une structure a suspension allongee |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6197059B1 (en) * | 1990-04-27 | 2001-03-06 | Medevec Licensing, B.V. | Accomodating intraocular lens |
| US5197981A (en) * | 1992-04-23 | 1993-03-30 | Alcon Surgical, Inc. | Intraocular lens having haptic of specific curvature and proportion |
| DE69637520D1 (de) * | 1995-02-15 | 2008-06-19 | Medevec Licensing Bv | Anpassbare intraokulare Linse mit T-förmigen Haltebügeln |
| FR2804860B1 (fr) * | 2000-02-16 | 2002-04-12 | Humanoptics Ag | Implant cristallinien accomodatif |
| US20040111152A1 (en) * | 2002-12-10 | 2004-06-10 | Kelman Charles David | Accommodating multifocal intraocular lens |
-
2003
- 2003-08-04 FR FR0309595A patent/FR2858544B1/fr not_active Expired - Fee Related
-
2004
- 2004-07-22 CA CA002534854A patent/CA2534854A1/fr not_active Abandoned
- 2004-07-22 US US10/566,228 patent/US20070112426A1/en not_active Abandoned
- 2004-07-22 EP EP04767912A patent/EP1651146A1/fr not_active Withdrawn
- 2004-07-22 WO PCT/FR2004/050351 patent/WO2005016190A1/fr not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4888012A (en) * | 1988-01-14 | 1989-12-19 | Gerald Horn | Intraocular lens assemblies |
| EP1108402A2 (fr) * | 1999-12-14 | 2001-06-20 | Boehm, Hans-Georg, Dr. rer. nat. | Lentille intraoculaire capable de s'accommoder |
| WO2002009620A1 (fr) * | 2000-08-02 | 2002-02-07 | Advanced Medical Optics, Inc. | Accommodation d'une lentille intraoculaire munie d'une structure de suspension |
| WO2003015668A1 (fr) * | 2001-08-15 | 2003-02-27 | Humanoptics Ag | Implant intraoculaire |
| WO2003059196A2 (fr) * | 2002-01-14 | 2003-07-24 | Advanced Medical Optics, Inc. | Accommodation d'une lentille intraoculaire au moyen d'une structure a suspension allongee |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2004296880B2 (en) * | 2003-12-09 | 2011-02-24 | Johnson & Johnson Surgical Vision, Inc. | Foldable intraocular lens and method of making |
| AU2011202426B2 (en) * | 2003-12-09 | 2013-04-04 | Johnson & Johnson Surgical Vision, Inc. | Foldable intraocular lens and method of making |
| US9259308B2 (en) | 2003-12-09 | 2016-02-16 | Abbott Medical Optics Inc. | Foldable intraocular lens and method of making |
| US9737396B2 (en) | 2003-12-09 | 2017-08-22 | Abbott Medical Optics Inc. | Foldable intraocular lens and method of making |
| US10028822B2 (en) | 2003-12-09 | 2018-07-24 | Johnson & Johnson Surgical Vision, Inc. | Foldable intraocular lens and method of making |
| US10420639B2 (en) | 2003-12-09 | 2019-09-24 | Johnson & Johnson Surgical Vision, Inc. | Foldable intraocular lens and method of making |
| WO2006054178A3 (fr) * | 2004-11-19 | 2006-09-28 | Bausch & Lomb | Implant intraoculaire mince |
| US9237946B2 (en) | 2004-11-19 | 2016-01-19 | Bausch & Lomb Incorporated | Thin IOL |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070112426A1 (en) | 2007-05-17 |
| CA2534854A1 (fr) | 2005-02-24 |
| FR2858544A1 (fr) | 2005-02-11 |
| EP1651146A1 (fr) | 2006-05-03 |
| FR2858544B1 (fr) | 2006-04-28 |
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