DE2705234A1 - Cornea replacement eye prosthesis - has ring of holes around periphery and coating of vitreous carbon - Google Patents

Cornea replacement eye prosthesis - has ring of holes around periphery and coating of vitreous carbon

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Publication number
DE2705234A1
DE2705234A1 DE19772705234 DE2705234A DE2705234A1 DE 2705234 A1 DE2705234 A1 DE 2705234A1 DE 19772705234 DE19772705234 DE 19772705234 DE 2705234 A DE2705234 A DE 2705234A DE 2705234 A1 DE2705234 A1 DE 2705234A1
Authority
DE
Germany
Prior art keywords
ring
cornea
layer
prosthesis according
coating
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.)
Withdrawn
Application number
DE19772705234
Other languages
German (de)
Inventor
Gerhard Dr Ing Hennig
Otto-Erich Prof Dr Med Lund
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
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
Application filed by Individual filed Critical Individual
Priority to DE19772705234 priority Critical patent/DE2705234A1/en
Publication of DE2705234A1 publication Critical patent/DE2705234A1/en
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/14Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/142Cornea, e.g. artificial corneae, keratoprostheses or corneal implants for repair of defective corneal tissue
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/14Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/15Implant having one or more holes, e.g. for nutrient transport, for facilitating handling
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/14Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16Intraocular lenses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/14Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/147Implants to be inserted in the stroma for refractive correction, e.g. ring-like implants

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (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

The eye prosthesis is a curved disc (10) to replace the corner with a ring (12) of finely porous carbon around the periphery. This is intended to ensure attachment of the disc to the eye. It can form part of the iris of the eye. The outer edge can also include a ring of holes (14) to assist attachment. The carbon layer may be vitreous carbon.

Description

Keratoprothese Keratoprosthesis

Die vorliegende Erfindung betrifft eine Keratoprothese gemäß dem Oberbegriff des Patentanspruchs 1. The present invention relates to a keratoprosthesis according to Preamble of claim 1.

Bei irreparablen Verletzungen der Cornea ist es bekannt, diese entweder durch ein entsprechendes Hornhautteil eines menschlichen Spenders oder auch durch ein Kunststoffteil, z.B. In the case of irreparable injuries to the cornea, it is known to either do this by a corresponding corneal part of a human donor or by a plastic part, e.g.

aus Polymethylmethacrylat, zu ersetzen. In beiden Fällen ist die Versagerquote groß, da sowohl natürliche als auch künstliche Hornhäute häufig wieder abgestoßen werdenbzw. nicht reiz- oder infektionsfrei einwachsen können. Bei Implantaten, die sowohl die Hornhaut als auch die Linse ersetzen und gewöhnlich aus nichtbiologischem Material, insbesondere Kunststoff, bestehen und von außen bis in den Glaskörper des Auges hineinragen, sind Dauererfolge noch wesentlich seltener, da an den Rändern solcher perkutaner Implantate ein Eindringen von Bakterien und damit Infektionen nur schwer verhindert werden können.made of polymethyl methacrylate. In both cases, the failure rate is large, as both natural and artificial corneas are often shed again become or cannot grow in without irritation or infection. For implants that replace both the cornea and lens, and usually non-biological Material, especially plastic, exist and from the outside into the glass body of the eye protrude, lasting successes are still much rarer, because they are at the edges Such percutaneous implants prevent bacteria from entering and causing infections difficult to prevent.

Aufgabe der vorliegenden Erfindung ist es dementsprechend, eine künstliche Keratoprothese anzugeben, die wesentlich sicherer und insbesondere infektionsfreier einwächst als die bekannten Keratoprothesen. The object of the present invention is accordingly to provide an artificial Indicate keratoprosthesis, which is much safer and, in particular, infection-free grows in than the well-known keratoprostheses.

Diese Aufgabe wird gemäß der Erfindung durch eine an das organische Gewebe des Implantatempfängers angrenzende Schicht aus medizinverträglicher Reinkohle oder Sinterkohle gelöst. This object is achieved according to the invention by an organic Layer of medically compatible pure carbon adjacent to the tissue of the implant recipient or dissolved sintered carbon.

Der Begriff "Keratoprothese" soll hier sowohl einen Ersatz für lediglich die Hornhaut (Cornea) als auch einen Ersatz für Hornhaut und Linse, beides aus nichtbiologischem Material, insbesondere Kunststoff, gegebenenfalls jedoch auch anorganischen Materialien, wie Gläser oder Quarz, umfassen. The term "keratoprosthesis" is intended here to be a substitute for merely the cornea as well as a substitute for the cornea and lens, both of which are non-biological Material, especially plastic, but possibly also inorganic materials, such as glasses or quartz.

Im lgenden werden Ausführungsbeispiele der Erfindung unter Bezugnahme auf die Zeichnung näher erläutert; es zeigen: Fig. 1 ein als Hornhautersatz vorgesehenes Kunststoffimplantat gemäß einer Ausführungsform der Erfindung; Fig. 2 eine weitere Ausführungsform eines Hornhautersatz-Implantats gemäß der Erfindung und Fig. 3 ein zum Ersatz von Hornhaut und Linse dienendes Implantat gemäß einer Ausführungsform der Erfindung. In the following, exemplary embodiments of the invention are referred to explained in more detail on the drawing; The figures show: FIG. 1 a corneal replacement Plastic implant according to one embodiment of the invention; Fig. 2 is another Embodiment of a cornea replacement implant according to the invention and FIG Implant serving to replace cornea and lens according to one embodiment the invention.

Das in Fig. 1 dargestellte Implantat ist zum Ersatz der menschlichen Cornea bestimmt und enthält ein der Form der Cornea entsprechendes gewölbtes Scheibchen 10 aus Kunststoff, z.B. The implant shown in Fig. 1 is to replace the human Cornea determines and contains a curved disc corresponding to the shape of the cornea 10 made of plastic, e.g.

Polymethylmethacrylat (PMMA).Polymethyl methacrylate (PMMA).

An der Peripherie des Scheibchens 10 befindet sich gemäß der Erfindung eine Schicht 12 aus medizinisch verträglicher Reinkohle, wie sie unter der Bezeichnung "Vitreous Carbon" oder Biocarbon bekannt ist. According to the invention, there is located on the periphery of the disc 10 a layer 12 of medically compatible pure carbon, as they are called "Vitreous Carbon" or Biocarbon is known.

Am Außenrand des Scheibchens sind Löcher 14 vorgesehen, welche zum Einnähen des Implantats dienen. Die Löcher 14 können sich in der Schicht 12 befinden, die dann eine entsprechende radiale Abmessung hat, also sozusagen aus einem Ring besteht, oder die Löcher können im Rand des Kunststoffscheibchens 10 vorgesehen sein. Im letzteren Falle erstreckt sich die Kohleschicht 12 dann vorzugsweise über den die Löcher enthaltenden Bereich des Scheibchens 10 sowie die Innenwände der Löcher. Die Schicht kann aufgesprüht sein oder im Falle, daß die Schicht einen ringartigen Körper bildet, mit dem Scheibchen 10 verklebt sein, wozu sich z.B. ein Cyanacrylat-Kleber eignet. On the outer edge of the disc holes 14 are provided, which for Sewing in the implant are used. The holes 14 can be in the layer 12, which then a corresponding has radial dimension, so to speak consists of a ring, or the holes can be in the edge of the plastic disc 10 may be provided. In the latter case, the carbon layer 12 then preferably extends over the area of the disc 10 containing the holes and the inner walls of the holes. The layer can be sprayed on or, in the case that the layer has a forms ring-like body, be glued to the disc 10, including e.g. a Cyanoacrylate glue is suitable.

Hier und in den folgenden Ausführungsbeispielen ist die Kohleschicht 12 vorzugsweise etwas porös, da dann das lebende Gewebe in die Poren einsprossen kann. Die Poren sind vorzugsweise so klein, daß sie mit dem unbewaffneten Auge nicht sichtbar sind. Here and in the following exemplary embodiments, the carbon layer is 12 preferably somewhat porous, as the living tissue then sprouts into the pores can. The pores are preferably so small that they cannot be seen with the naked eye are visible.

Die Hornhautprothese gemäß Fig. 2 enthält wieder ein Scheibchen 10 aus einem durchsichtigen, gewebeverträglichen Kunststoff, wie PMMA. Das Scheibchen ist von einem relativ breiten Ring 12' aus der erwähnten medizinisch verträglichen Reinkohle umgeben. Der Ring 12' ist so ausgebildet, daß er die Iris ganz oder teilweise imitiert, und hat an seinem Rand Löcher 14' zur Befestigung des Implantats im Auge des Empfängers. The corneal prosthesis according to FIG. 2 again contains a disc 10 made of a transparent, tissue-compatible plastic such as PMMA. The disc is medically acceptable from a relatively wide ring 12 'from the mentioned Surrounded pure coal. The ring 12 'is designed so that it completely or partially covers the iris imitates, and has holes 14 'on its edge for attaching the implant in the eye Recipient.

Fig. 3 zeigt ein Implantat gemäß einem Ausführungsbeispiel der Erfindung, das zum Ersatz der Hornhaut und der Linse dient. 3 shows an implant according to an exemplary embodiment of the invention, which is used to replace the cornea and the lens.

Es enthält einen runden, oder wie dargestellt, etwa sechseckigen Kunststoffkörper 10", dessen Außenseite linsenartig gewölbt und mit schrägen Facetten 16 versehen sein kann. Die Seitenflächen 18 sind mit einer manschettenartigen Schicht 12" aus der erwähnten hochreinen Kohle überzogen. Der Durchmesser des Körpers 10" kann beispielsweise etwa 6,5 mm betragen. Die Seitenflächen können wie üblich Lödier 14 zum Einnähen und gegebenenfalls noch andere Mittel zur besseren Fixierung, wie Rillen 20, enthalten.It contains a round or, as shown, roughly hexagonal plastic body 10 ″, the outside of which is arched like a lens and provided with inclined facets 16 can be. The side surfaces 18 are made of a sleeve-like layer 12 ″ coated with the aforementioned high-purity coal. The diameter of the body 10 ″ can, for example be about 6.5 mm. The side surfaces can be sewn in as usual Lödier 14 and optionally also contain other means for better fixation, such as grooves 20.

Die Ausführungsform gemäß Fig. 3 kann dadurch abgewandelt werden, daß, wie in Fig. 3 gestrichelt dargestellt ist, beim oberen Ende des wie das Scheibchen 10 aus optisch klarem Material bestehenden Implantatkörpers ein flanschartiger Ring 12"' aus der medizinisch verträglichen Kohle vorgesehen ist, der ähnlich wie der Ring 12' in Fig. 2 die Iris ganz oder teilweise imitiert oder gegebenenfalls auch ersetzt. The embodiment according to FIG. 3 can be modified by that, as shown in phantom in Fig. 3, at the upper end of the like the disc 10 made of optically clear material existing implant body a flange-like ring 12 "'is provided from the medically acceptable charcoal, which is similar to the Ring 12 'in FIG. 2 imitates the iris in whole or in part, or possibly also replaced.

Die Ringe 12' und 12"' können vorne mit einer Schicht aus gefärbtem Kunststoff versehen sein, die dem Irisersatz ein gewünschtes Aussehen verleiht. Die mit menschlichem Gewebe in Berührung kommenden Flächen bestehen dort, wo sie zur freien Oberfläche durchstoßen, jedoch erfindungsgemäß auch hier auf alle Fälle aus der medizinisch verträglichen Reinkohle. The rings 12 'and 12' '' can be fronted with a layer of colored Be provided with plastic, which gives the iris replacement a desired appearance. The surfaces that come into contact with human tissue exist where they are pierce to the free surface, but according to the invention also here in all cases from the medically compatible pure coal.

L e e r s e i t eL e r s e i t e

Claims (7)

Ansprüche Prothese zum Ersatz der Augenhornhaut oder der Augenhornhaut und der Linse und/oder Iris des Auges mit einem durchsichtigen Teil aus einem nichtbiologischen Material, g e k e n n z e i c h n e t d u r c h eine an das organische Gewebe des Implantatempfängers angrenzende Schicht (12, 12', 12", 12"') aus medizinisch verträglicher Reinkohle. Claims prosthesis to replace the cornea or cornea and the lens and / or iris of the eye with a transparent part made of a non-biological one Material that is not marked on the organic tissue of the Implant receiver adjoining layer (12, 12 ', 12 ", 12"') made of medically compatible Pure coal. 2. Prothese nach Anspruch 1, d a d u r c h g e -k e n n z e i c h n e t , daß die Reinkohleschicht feinporig ist. 2. Prosthesis according to claim 1, d a d u r c h g e -k e n n z e i c h n e t that the pure carbon layer is fine-pored. 3. Prothese nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß die Reinkohleschicht Befestigungsmittel bildet oder umhüllt. 3. Prosthesis according to claim 1 or 2, d a d u r c h g e k e n n z e i c h n e t that the pure carbon layer forms or envelops fastening means. 4. Prothese nach mindestens einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß die Reinkohleschicht durch einen ringartigen Körper (12') gebildet ist. 4. Prosthesis according to at least one of the preceding claims, d a d u r c h g e k e n n n z e i c h n e t that the pure coal layer is covered by a ring-like Body (12 ') is formed. 5. Prothese nach Anspruch 4, d a d u r c h g e -k e n n z e i c h n e t , daß der ringartige Körper (12', 12"') mindestens einen Teil der Iris nachbildet. 5. Prosthesis according to claim 4, d a d u r c h g e -k e n n z e i c h n e t that the ring-like body (12 ', 12 "') simulates at least part of the iris. 6. Prothese nach Anspruch 4 oder 5, d a d u r c h g e k e n n z e i c h n e t , daß der Außenrand des ringartigen Körpers Befestigungslöcher (14') aufweist. 6. Prosthesis according to claim 4 or 5, d a d u r c h g e k e n n z e i c h n e t that the outer edge of the ring-like body has fastening holes (14 ') having. 7. Prothese nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß die Reinkohleschicht eine Sinterkohleschicht ("Vitreous Carbon"-Schicht) ist. 7. Prosthesis according to one of the preceding claims, d a d u r c it should be noted that the pure carbon layer is a sintered carbon layer ("Vitreous Carbon" layer) is.
DE19772705234 1977-02-08 1977-02-08 Cornea replacement eye prosthesis - has ring of holes around periphery and coating of vitreous carbon Withdrawn DE2705234A1 (en)

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DE19772705234 DE2705234A1 (en) 1977-02-08 1977-02-08 Cornea replacement eye prosthesis - has ring of holes around periphery and coating of vitreous carbon

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612012A (en) * 1982-07-28 1986-09-16 White Thomas C Corneal implant
EP0224460A2 (en) * 1985-11-22 1987-06-03 Swedish Graft Technique AB Implant lens and method and apparatus for its production
US4715858A (en) * 1986-07-25 1987-12-29 Lindstrom Richard L Epicorneal lens
US4799931A (en) * 1986-05-14 1989-01-24 Lindstrom Richard L Intracorneal lens
US4822359A (en) * 1987-02-19 1989-04-18 Sumitomo Electric Industries, Ltd. Intraocular lens with coated diamond-like carbon film
US4851003A (en) * 1988-01-05 1989-07-25 Lindstrom Richard L Corneal implant lens with fixation holes
US4865601A (en) * 1987-07-07 1989-09-12 Caldwell Delmar R Intraocular prostheses
EP0333344A2 (en) * 1988-03-02 1989-09-20 Minnesota Mining And Manufacturing Company Corneal implants and manufacture and use thereof
US5171318A (en) * 1987-11-09 1992-12-15 Chiron Ophthalmics, Inc. Treated corneal prosthetic device
US5282851A (en) * 1987-07-07 1994-02-01 Jacob Labarre Jean Intraocular prostheses
US5300115A (en) * 1992-11-19 1994-04-05 Keratos, Inc. Intraocular prosthesis
DE19508922A1 (en) * 1994-03-14 1995-11-30 Norbert Dr Med Schrage Curved contact lens with bands
US6090995A (en) * 1989-09-15 2000-07-18 Surmodics, Inc. Surface modifying composition and method
WO2002043622A1 (en) * 2000-11-30 2002-06-06 Aachener Centrum Für Technologietransfer In Der Ophthalmologie E.V. Keratoprothesis
EP1498087A2 (en) * 2003-07-17 2005-01-19 I.O International Ltd. Artificial cornea

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612012A (en) * 1982-07-28 1986-09-16 White Thomas C Corneal implant
EP0224460A2 (en) * 1985-11-22 1987-06-03 Swedish Graft Technique AB Implant lens and method and apparatus for its production
EP0224460A3 (en) * 1985-11-22 1989-02-08 Swedish Graft Technique AB Implant lens and method and apparatus for its production
US4799931A (en) * 1986-05-14 1989-01-24 Lindstrom Richard L Intracorneal lens
US4715858A (en) * 1986-07-25 1987-12-29 Lindstrom Richard L Epicorneal lens
US4822359A (en) * 1987-02-19 1989-04-18 Sumitomo Electric Industries, Ltd. Intraocular lens with coated diamond-like carbon film
US4865601A (en) * 1987-07-07 1989-09-12 Caldwell Delmar R Intraocular prostheses
US5282851A (en) * 1987-07-07 1994-02-01 Jacob Labarre Jean Intraocular prostheses
US5171318A (en) * 1987-11-09 1992-12-15 Chiron Ophthalmics, Inc. Treated corneal prosthetic device
US4851003A (en) * 1988-01-05 1989-07-25 Lindstrom Richard L Corneal implant lens with fixation holes
US5108428A (en) * 1988-03-02 1992-04-28 Minnesota Mining And Manufacturing Company Corneal implants and manufacture and use thereof
EP0333344A3 (en) * 1988-03-02 1989-10-18 Minnesota Mining And Manufacturing Company Corneal implants and manufacture and use thereof
EP0333344A2 (en) * 1988-03-02 1989-09-20 Minnesota Mining And Manufacturing Company Corneal implants and manufacture and use thereof
US5489300A (en) * 1988-03-02 1996-02-06 Minnesota Mining And Manufacturing Co. Surgical method for implanting a corneal implant
US6090995A (en) * 1989-09-15 2000-07-18 Surmodics, Inc. Surface modifying composition and method
US5300115A (en) * 1992-11-19 1994-04-05 Keratos, Inc. Intraocular prosthesis
US5366499A (en) * 1992-11-19 1994-11-22 Keratos, Inc. Intraocular prosthesis
DE19508922A1 (en) * 1994-03-14 1995-11-30 Norbert Dr Med Schrage Curved contact lens with bands
DE19508922C2 (en) * 1994-03-14 1999-10-14 Norbert Schrage Corneal prosthesis
WO2002043622A1 (en) * 2000-11-30 2002-06-06 Aachener Centrum Für Technologietransfer In Der Ophthalmologie E.V. Keratoprothesis
EP1498087A2 (en) * 2003-07-17 2005-01-19 I.O International Ltd. Artificial cornea
EP1498087A3 (en) * 2003-07-17 2005-03-16 I.O International Ltd. Artificial cornea

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