FR2551969A1 - Fastening of handles of intraocular lenses and intraocular lenses resulting from this process - Google Patents
Fastening of handles of intraocular lenses and intraocular lenses resulting from this process Download PDFInfo
- Publication number
- FR2551969A1 FR2551969A1 FR8314668A FR8314668A FR2551969A1 FR 2551969 A1 FR2551969 A1 FR 2551969A1 FR 8314668 A FR8314668 A FR 8314668A FR 8314668 A FR8314668 A FR 8314668A FR 2551969 A1 FR2551969 A1 FR 2551969A1
- Authority
- FR
- France
- Prior art keywords
- lens
- wire
- diameter
- blind hole
- hole
- 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.)
- Pending
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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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
- C08L33/12—Homopolymers or copolymers of methyl methacrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- 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
- A61F2002/1683—Intraocular lenses having supporting structure for lens, e.g. haptics having filiform haptics
- A61F2002/1686—Securing a filiform haptic to a lens body
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Transplantation (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Dermatology (AREA)
- Epidemiology (AREA)
- Ophthalmology & Optometry (AREA)
- Cardiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Prostheses (AREA)
Abstract
Description
La présente invention concerne les lentilles intra-oculaires et, plus particulièrement, le procédé d'ancrage dans ces lentilles d'anses adaptées à leur positionnement dans le milieu oculaire. The present invention relates to intraocular lenses and, more particularly, the method of anchoring in these lens handles adapted to their positioning in the ocular medium.
Les anses des lentilles intra-oculaires sont actuellement en métal ou en matière plastique, biologiquement inerte. The handles of the intraocular lenses are currently made of metal or plastic, biologically inert.
C'est aux anses en matière plastique, moins coûteuses et plus légères, que l'invention se réfère. It is to the plastic handles, less expensive and lighter, that the invention refers.
Jusqu'à présent, les anses en matière plastique ont été solidarisées aux lentilles intra-oculaires par pressage, serrage, collage ou frettage Ces modes de fixation soit demandent des opérations longues et fastidieuses, soit exigent des pièces devant être ajustées avec une précision incompatible avec un faible prix de revient, soit n'assurent pas une sécurité parfaite contre un relâchement de l'ancrage ou une désolidarisation. Until now, the plastic handles have been secured to the intraocular lenses by pressing, tightening, gluing or shrinking These methods of attachment either require long and tedious operations, or require parts to be adjusted with a precision incompatible with a low cost price, either do not provide perfect security against loosening of the anchor or uncoupling.
La présente invention propose un procédé simple, fiable et économique permettant de remédier aux inconvénients des techniques connues. The present invention provides a simple, reliable and economical method for overcoming the drawbacks of known techniques.
Ce procédé consiste
- à pratiquer dans la lentille
. à partir de son bord et selon une corde de
longueur très inférieure au diamètre de la
lentille, un trou borgne d'un diamètre d, et
. à partir d'une des faces optiques de la
lentille, un perçage d'un diamètre D la traver
saut de part en part en intersectant le trou
borgne au voisinage de sa zone médiane, le
diamètre D étant nettement supérieur au diamètre
d,
- à introduire, dans le trou borgne, l'extrémité d'un
premier fil en matière plastique de diamètre d', très
légèrement inférieur à d, et constituant l'anse de
positionnement,
- à introduire, dans l'une des ouvertures du perçage,
l'extrémité amincie, d'un diamètre D" inférieur à
d'un - d), d'un second fil en matière plastique d'un
diamètre D' légèrement inférieur à D et supérieur à
D - d', de telle sorte que cette extrémité amincie
traverse l'espace laissé vacant par le premier fil
dans l'intersection entre le trou borgne et le
perçage et débouche à l'extérieur de la lentille par
l'autre ouverture du perçage,
- à tirer sur l'extrémité amincie jusqu'à ce que la
section normale de diamètre D' du second fil
débouche, elle aussi, hors de la lentille, et
- a sectionner le second fil au ras des deux faces
optiques.This process consists
- to practice in the lens
. from its edge and along a cord of
length much less than the diameter of the
lens, a blind hole with a diameter d, and
. from one of the optical faces of the
lens, a hole with a diameter D pass through it
jump right through by intersecting the hole
blind in the vicinity of its middle zone, the
diameter D being clearly greater than the diameter
d,
- to introduce, into the blind hole, the end of a
first plastic wire with a diameter of, very
slightly less than d, and constituting the handle of
positioning,
- to be introduced into one of the openings in the bore,
the thinned end, with a diameter D "less than
of a - d), of a second plastic wire of a
diameter D 'slightly less than D and greater than
D - d ', so that this end thins
crosses the space left vacant by the first wire
in the intersection between the blind hole and the
drilling and opening on the outside of the lens by
the other opening of the hole,
- pull on the thinned end until the
normal section of diameter D 'of the second wire
emerges, too, out of the lens, and
- to cut the second wire flush with both sides
optical.
De cette manière, le fil de diamètre D' traverse à force l'espace laissé vacant par le premier fil de diamètre d' dans l'intersection du trou borgne et du perçage, en repoussant le premier fil contre la paroi du perçage avec déformation élastique des deux fils croisés, de sorte qu'une fois que le second fil n'est plus soumis à une force de traction, les deux fils se bloquent mutuellement en place. In this way, the wire of diameter D 'forcibly crosses the space left vacant by the first wire of diameter d' in the intersection of the blind hole and the bore, pushing the first wire against the wall of the bore with elastic deformation of the two crossed wires, so that once the second wire is no longer subjected to a tensile force, the two wires lock each other in place.
Dans une forme d'exécution préférée, après le sectionnement, les extrémités du second fil emprisonné dans la lentille sont ramollies thermiquement pour améliorer encore la sécurité du produit en scellant les ouvertures du perçage. In a preferred embodiment, after cutting, the ends of the second wire trapped in the lens are thermally softened to further improve the safety of the product by sealing the openings in the bore.
D'autres caractéristiques de l'invention ressortiront de la description qui va suivre, faite en référence au dessin annexé dans lequel
- la figure 1 est une coupe d'une lentille, prise selon
l'axe longitudinal du trou borgne,
- la figure 2 est une coupe prise selon la ligne Il-Il
de la figure 1,
- la figure 3 est une vue semblable à la figure 1, avec
l'extrémité du premier fil (anse de positionnement)
introduite dans le trou borgne,
- la figure 4 est une coupe selon la ligne IV-IV de la
figure 3, mais avec introduction de l'extrémité
amincie du second fil (fil d'ancrage) dans le
perçage, et
- la figure 5 est une coupe prise selon l'axe longitu
dinal du trou borgne, l'ancrage étant réalisé.Other characteristics of the invention will emerge from the description which follows, made with reference to the appended drawing in which
- Figure 1 is a section of a lens, taken along
the longitudinal axis of the blind hole,
- Figure 2 is a section taken along the line Il-Il
of figure 1,
- Figure 3 is a view similar to Figure 1, with
the end of the first wire (positioning loop)
introduced into the blind hole,
- Figure 4 is a section along line IV-IV of the
figure 3, but with introduction of the end
thinning of the second wire (anchor wire) in the
piercing, and
- Figure 5 is a section taken along the longitu axis
dinal of the blind hole, the anchoring being carried out.
Si l'on se réfère aux figures 1 et 2, on voit une lentille intra-oculaire 1 présentant deux faces optiques, respectivement 2 et 3. Un trou borgne 4 de diamètre d est pratiqué dans la matière de la lentille 1 au voisinage de son bord. L'axe longitudinal de ce trou borgne est sensiblement équidistant des faces optiques 2 et 3. Un perçage 5 d'un diamètre D, approximativement égal à 2d, traverse la lentille 1 de part en part, avec son axe longitudinal perpendiculaire et sécant à l'axe longitudinal du trou borgne 4. Le trou borgne 4 traverse donc le perçage 5 en son milieu. If we refer to Figures 1 and 2, we see an intraocular lens 1 having two optical faces, respectively 2 and 3. A blind hole 4 of diameter d is made in the material of the lens 1 in the vicinity of its edge. The longitudinal axis of this blind hole is substantially equidistant from the optical faces 2 and 3. A bore 5 with a diameter D, approximately equal to 2d, passes through the lens 1 right through, with its longitudinal axis perpendicular and intersecting the longitudinal axis of the blind hole 4. The blind hole 4 therefore crosses the bore 5 in the middle.
A titre d'exemple, d peut être de 0,155 mm et D de 0,300 mm. For example, d can be 0.155 mm and D 0.300 mm.
La figure 3 montre une anse de positionnement constituée par un fil en matière plastique 6, d'un diamètre d', dont une extrémité est enfilée dans le trou borgne 4 et orientée convenablement en fonction de sa forme totale et de la demande. La figure 4 montre un second fil en matière plastique 7 de diamètre D', dont l'extrémité amincie 8, de diamètre D", a été introduite dans 1 'une des ouvertures du perçage 5, passée au travers de l'espace laisse vacant par le fil 6 dans l'intersection du trou borgne 4 et du perçage 5 et ressortie par 1 'ouverture opposée du perçage 5. Figure 3 shows a positioning loop constituted by a plastic wire 6, with a diameter of, one end of which is threaded into the blind hole 4 and oriented suitably as a function of its total shape and of demand. Figure 4 shows a second plastic wire 7 of diameter D ', whose thinned end 8, of diameter D ", was introduced into one of the openings of the bore 5, passed through the space leaves vacant by the wire 6 in the intersection of the blind hole 4 and the bore 5 and exited by the opposite opening of the bore 5.
L'extrémité 8 a pu être amincie par étirage à chaud.The end 8 could have been thinned by hot drawing.
A titre d'exemple, d' peut être de 0,150 mm et D' compris entre 0,200 et 0,250 mm. D?ï doit être inférieur à -21(D - d') pour que l'introduction de l'extrémité amincie dans l'intersection du trou borgne 4 et du perçage 5 soit facile. For example, d 'can be 0.150 mm and D' is between 0.200 and 0.250 mm. D? Ï must be less than -21 (D - d ') so that the introduction of the thinned end into the intersection of the blind hole 4 and the bore 5 is easy.
Une fois l'extrémité amincie 8 ressortie de la lentille 1, on tire sur cette extrémité amincie jusqu'à ce que le fil 7, sous sa section normale D' débouche de la lentille 1. Once the thinned end 8 has emerged from the lens 1, this thinned end is pulled until the wire 7, in its normal section D ′ opens out from the lens 1.
Pour ce faire, le fil 7 doit repousser le fil 6 au niveau où il le croise et l'appliquer contre la paroi du perçage. La somme des diamètres d' + D' étant supérieure à D, les deux fils 6 et 7 sont contraints de se déformer élastiquement au niveau d < 'de ' intersection entre le trou borgne 4 et le perçage 5. Il suffit alors de sectionner le fil 7 au ras des faces optiques 2 et 3 pour que les deux fils 6 et 7 se bloquent mutuellement en place. On obtient ainsi un verrouillage propre et solide.To do this, the wire 7 must push the wire 6 back to the level where it crosses it and apply it against the wall of the bore. The sum of the diameters of + D 'being greater than D, the two wires 6 and 7 are forced to deform elastically at the level of <' of 'intersection between the blind hole 4 and the bore 5. It then suffices to cut the wire 7 flush with the optical faces 2 and 3 so that the two wires 6 and 7 lock mutually in place. This provides a clean and solid lock.
Par surcroît de sécurité, on peut ramollir à la chaleur les extrémités du fil 7 sectionnées pour sceller les ouvertures du perçage 5. For added security, the ends of the cut wire 7 can be softened by heat to seal the openings in the bore 5.
Les fils 6 et 7 peuvent être constitués ou non de la même matière. Cette matière pourra être, d'une manière connue en soi, du Nylon, du poly(méthacrylate de méthyle), du polypropylène, du poly(fluorure de vinylidène) ou autres matières semblables, transparentes ou translucides, chimiquement pures et biologiquement inertes. The wires 6 and 7 may or may not be made of the same material. This material may be, in a manner known per se, nylon, poly (methyl methacrylate), polypropylene, poly (vinylidene fluoride) or other similar materials, transparent or translucent, chemically pure and biologically inert.
il est bien entendu que l'invention n'est pas limitée à la forme d'exécution décrite et représentée. En particulier, l'extrémité 8 du fil 7 pourrait être amincie par tout autre procédé que l'étirage, le trou borgne pourrait ne pas être perpendiculaire au perçage 5, etc... it is understood that the invention is not limited to the embodiment described and shown. In particular, the end 8 of the wire 7 could be thinned by any other method than drawing, the blind hole could not be perpendicular to the bore 5, etc.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8314668A FR2551969A1 (en) | 1983-09-15 | 1983-09-15 | Fastening of handles of intraocular lenses and intraocular lenses resulting from this process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8314668A FR2551969A1 (en) | 1983-09-15 | 1983-09-15 | Fastening of handles of intraocular lenses and intraocular lenses resulting from this process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2551969A1 true FR2551969A1 (en) | 1985-03-22 |
Family
ID=9292237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8314668A Pending FR2551969A1 (en) | 1983-09-15 | 1983-09-15 | Fastening of handles of intraocular lenses and intraocular lenses resulting from this process |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2551969A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0208546A2 (en) * | 1985-07-11 | 1987-01-14 | Allergan, Inc | IOL and method of attaching a fixation member to an optic |
| WO1992017133A1 (en) * | 1991-04-05 | 1992-10-15 | Nestle, S.A. | Method of attaching a haptic to an optic of an intraocular lens |
-
1983
- 1983-09-15 FR FR8314668A patent/FR2551969A1/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0208546A2 (en) * | 1985-07-11 | 1987-01-14 | Allergan, Inc | IOL and method of attaching a fixation member to an optic |
| EP0208546A3 (en) * | 1985-07-11 | 1988-11-09 | Allergan, Inc. | Iol and method of attaching a fixation member to an optic |
| WO1992017133A1 (en) * | 1991-04-05 | 1992-10-15 | Nestle, S.A. | Method of attaching a haptic to an optic of an intraocular lens |
| EP0507429B1 (en) * | 1991-04-05 | 1995-07-05 | Nestle S.A. | Method of attaching a haptic to an optic of an intraocular lens |
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