DE102008051644A1 - Method for ablation of spherical segments within cornea of eyes, involves focusing two partial beams of laser beam on each other in point-shape so that energy of partial beams together sufficient to cause dissolution of collagen fibers - Google Patents
Method for ablation of spherical segments within cornea of eyes, involves focusing two partial beams of laser beam on each other in point-shape so that energy of partial beams together sufficient to cause dissolution of collagen fibers Download PDFInfo
- Publication number
- DE102008051644A1 DE102008051644A1 DE200810051644 DE102008051644A DE102008051644A1 DE 102008051644 A1 DE102008051644 A1 DE 102008051644A1 DE 200810051644 DE200810051644 DE 200810051644 DE 102008051644 A DE102008051644 A DE 102008051644A DE 102008051644 A1 DE102008051644 A1 DE 102008051644A1
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- Prior art keywords
- laser
- guided
- partial beams
- cornea
- lasers
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 210000004087 cornea Anatomy 0.000 title claims abstract description 17
- 102000008186 Collagen Human genes 0.000 title claims abstract description 9
- 108010035532 Collagen Proteins 0.000 title claims abstract description 9
- 229920001436 collagen Polymers 0.000 title claims abstract description 9
- 239000000835 fiber Substances 0.000 title claims abstract description 8
- 238000004090 dissolution Methods 0.000 title claims abstract 3
- 238000002679 ablation Methods 0.000 title description 2
- 239000003365 glass fiber Substances 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 238000004091 panning Methods 0.000 claims 1
- 210000001519 tissue Anatomy 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 206010010725 Conjunctival irritation Diseases 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 206010038563 Reocclusion Diseases 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000009610 hypersensitivity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000013532 laser treatment Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 230000002123 temporal 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
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
-
- 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
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F9/00825—Methods or devices for eye surgery using laser for photodisruption
- A61F9/00827—Refractive correction, e.g. lenticle
-
- 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
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
- A61F2009/00872—Cornea
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Optics & Photonics (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Laser Surgery Devices (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zur Steuerung des Abtrags von Körpergewebe unter der Hautoberfläche, speziell der inneren Hornhaut des Auges, mit Lasern.The The invention relates to a method for controlling the removal of body tissue under the skin surface, especially the inner cornea of the eye, with lasers.
Der Einsatz von Femtosekundenlasern für die LASIK (Laser Assisted in Situ Keratomileusuis) ist in der Augenchirurgie mittlerweile gängige Praxis.Of the Use of femtosecond lasers for LASIK (Laser Assisted in Situ Keratomileusuis) is now in ophthalmic surgery common Practice.
Dabei ist das Verfahren bisher so, dass mit dem FS-Laser zunächst nur die Hornhaut in einem Kreissegment von ca. 270° aufgeschnitten und dieser Hornhautlappen umgeklappt wird, um anschließend das darunter liegende Lentikel zu präparieren, dessen Verkleinerung nach Wiederverschluss des Auges den verringerten Brechungsindex und damit die Anpassung an die gewünschte Sehstärke bewirkt.there the procedure is so far that with the FS laser initially only the cornea is cut open in a circle segment of about 270 ° and this corneal flap is folded down, then to to prepare the underlying lenticle, its reduction after reocclusion of the eye the reduced refractive index and thus causes the adjustment to the desired vision.
Diese Behandlungsmethode ist nicht ohne Risiko und führt vielfach zu unangenehmen Begleiteffekten, wie Überempfindlichkeit und Störreflexe bei heller Beleuchtung, ständige Bindehautreizung, Aufspringen der Hornhaut bei Schlägen aufs Auge, etc.These Treatment method is not without risk and often leads to unpleasant Accompanying effects, such as hypersensitivity and glitches in bright lighting, constant Conjunctival irritation, popping of the cornea during beatings Eye, etc.
Bislang ist es aber technisch nicht möglich, Hornhaut oder Lentikel zu bearbeiten, ohne einen entsprechenden Aufschnitt der Hornhaut vorzunehmen.So far but it is not technically possible cornea or lenticule without a proper cold cuts the cornea.
Zwar ist der Vorteil des FS-Lasers, dass er eine schonende Behandlung bei vergleichsweise hoher Eindringtiefe ermöglicht, es ist jedoch bisher schwierig, einen gezielten Abtrag von Gewebe flächig in einem definierten, tiefer liegenden Bereich zu erzielen.Though The advantage of the FS laser is that it is a gentle treatment with a relatively high penetration depth, but it has been difficult to targeted removal of tissue in a defined manner, lower range.
Es ist daher Aufgabe der Erfindung, Laser so zu führen und zu steuern, dass dieses möglich wird und damit z. B. die Korrektur von Sehstärke ohne massiv invasiven Eingriff, oder Verletzung der Hornhaut-Oberfläche, nur durch einfache Laserbehandlung, ermöglicht wird.It It is therefore an object of the invention to guide and control lasers so that this possible is and thus z. Correction of vision without massive invasive surgery, or injury to the corneal surface, only by simple laser treatment, allows becomes.
Dies wird erfindungsgemäß dadurch erreicht, dass entweder ein Laserstrahl oder -puls, durch Halbspiegel geteilt, oder mehrere Laser aus verschiedenen Richtungen in den zu bearbeitenden Bereich eingestrahlt werden, so dass jeweils nur die punktförmige Stelle, in der mehrere Strahlen zusammentreffen, die zur Aufspaltung der Kollagenfasern erforderliche Energiemenge erhält und das umliegende Gewebe unbeschädigt bleibt.This is characterized according to the invention achieved that either a laser beam or pulse, through half mirror split, or multiple lasers from different directions in the to be processed area to be irradiated, so that only each the punctiform Place in which several rays meet, which splits the collagen fibers required amount of energy receives and the surrounding tissue undamaged remains.
Da der Abtrag in der Regel sphärisch bezogen auf den Brennpunkt der Augenlinse erfolgen soll, bietet sich an, das Lasersystem rotierend über dem Augenmittelpunkt zu positionieren und den Abtrag in sich überlappend konzentrischen Bahnen vorzunehmen.There the erosion is usually spherical based on the focal point of the eye lens, offers The laser system rotates about the center of the eye position and remove the overlapping concentric orbits make.
Somit ist es z. B. möglich, nur einen inneren Bereich der Hornhaut bzw. des Lentikels abzutragen, die negativen Folgen einer Verletzung des Hornhautepithels bzw. der Epidermis aber weit gehend zu vermeiden, da nur ein minimaler Einschnitt am temporalen Hornhautende zur Ausleitung des Gewebe-Abtrags erforderlich ist.Consequently is it z. Possible, to remove only an inner area of the cornea or lenticle, the negative consequences of corneal epithelial injury or However, avoid epidermis as far as possible, as only a minimal incision at the temporal end of the cornea for the removal of the tissue ablation required is.
Da mehrere Laser zusammen eingesetzt werden können, ist die Nutzung von Lasersystemen, die bislang auf Grund mangelnder Leistung nicht in der Augenchirurgie eingesetzt werden, wie z. B. Diodenlaser geeigneter Frequenz, möglich.There Several lasers can be used together, is the use of laser systems so far due to lack of performance not in eye surgery be used, such. B. diode laser suitable frequency possible.
Beim Einsatz der bewährten gepulsten Eximer-Laser ist dagegen, je nach Stärke des Pulses, die ein- oder mehrfache Teilung des Strahls vorzusehen, um Schädigung der Epidermis zu vermeiden.At the Use of the proven pulsed excimer laser, on the other hand, depending on the strength of the pulse, the on or To provide multiple division of the beam to avoid damage to the epidermis.
Das Verfahren der Strahlteilung ist in der Lasertechnik verbreitet und dem Fachmann bekannt. Ebenso bekannt sind Verfahren, Laserstrahlen oder -pulse in Glasfasern, bzw. Glasfaser-Bündeln zu führen, um die meist großvolumige Laserquelle vom Applikationsbereich unabhängig positionieren zu können.The Method of beam splitting is widespread in laser technology and known to the skilled person. Also known are methods, laser beams or pulses in glass fibers, or glass fiber bundles to lead to the most bulky Position the laser source independently of the application area.
Im vorliegenden Fall werden die Glasfaser-Bündel dazu spiralig geführt, um die Rotation des Systems zu ermöglichen, gegebenenfalls kann dazu die Rotationsrichtung nach jedem Durchlauf reversiert werden.in the In this case, the glass fiber bundles are spirally guided to to allow the rotation of the system if necessary, the direction of rotation after each pass reversed.
Durch Rotation und Veränderung der Einstahlwinkel der Laserstrahlen oder -Pulse wird das zu behandelnde sphärische Segment abgetragen. Steuerung und Strahlführung derartiger Systeme sind nach dem Stande der Technik bekannt.By Rotation and change the angle of incidence of the laser beams or pulses will be the one to be treated spherical Segment removed. Control and beam guidance of such systems are after known in the art.
Zur Vervollständigung der Operation ist die Abführung der aufgelösten Kollagenfasern erforderlich. Dies kann durch einen kleinen seitlichen Schnitt erfolgen, der das spährische Segment nach außen öffnet, bzw. dem Operateur zugänglich macht. Hierdurch können auch evtl. unaufgelöste Kollagenreste abpräpariert oder durch Zuführung von 1–5% EDTA-Lösung oder HCL aufgelöst werden, evtl. kann dazu der Außendruck auf die Hornhaut dazu durch Aufsetzen von Kontaktlinsen oder Haftschalen verstärkt werden. Damit ist gewährleistet, dass das Verfahren auch bei evtl. unvollständiger Wirkung operativ einsetzbar ist.to completion the operation is the exhaustion the resolved one Collagen fibers required. This can be done through a small lateral Cut, the spährische Segment outwards opens, or accessible to the surgeon power. This allows also possibly unresolved Removed collagen residues or by feeder from 1-5% EDTA solution or HCL dissolved be, possibly can to the external pressure on the cornea by putting on contact lenses or trays reinforced become. This ensures that that the method can be used operationally even in the case of possibly incomplete action is.
Eine
einfache Ausführung
wird in nachfolgenden Zeichnungen
Dabei
stellt
Das
Strahlsystem besteht in dieser einfachen Form aus dem Lasersystem
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810051644 DE102008051644A1 (en) | 2008-10-14 | 2008-10-14 | Method for ablation of spherical segments within cornea of eyes, involves focusing two partial beams of laser beam on each other in point-shape so that energy of partial beams together sufficient to cause dissolution of collagen fibers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810051644 DE102008051644A1 (en) | 2008-10-14 | 2008-10-14 | Method for ablation of spherical segments within cornea of eyes, involves focusing two partial beams of laser beam on each other in point-shape so that energy of partial beams together sufficient to cause dissolution of collagen fibers |
Publications (1)
Publication Number | Publication Date |
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DE102008051644A1 true DE102008051644A1 (en) | 2010-04-15 |
Family
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Family Applications (1)
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DE200810051644 Pending DE102008051644A1 (en) | 2008-10-14 | 2008-10-14 | Method for ablation of spherical segments within cornea of eyes, involves focusing two partial beams of laser beam on each other in point-shape so that energy of partial beams together sufficient to cause dissolution of collagen fibers |
Country Status (1)
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DE (1) | DE102008051644A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010020194A1 (en) * | 2010-05-07 | 2011-11-10 | Carl Zeiss Meditec Ag | Method and device for stabilizing the cornea |
EP3459509A1 (en) * | 2017-09-20 | 2019-03-27 | Ziemer Ophthalmic Systems AG | Ophthalmological device for treating eye tissue using a pulsed processing laser beam |
DE102019122166A1 (en) * | 2019-08-19 | 2021-02-25 | Schwind Eye-Tech-Solutions Gmbh | Method for controlling an ophthalmic laser and treatment device |
-
2008
- 2008-10-14 DE DE200810051644 patent/DE102008051644A1/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010020194A1 (en) * | 2010-05-07 | 2011-11-10 | Carl Zeiss Meditec Ag | Method and device for stabilizing the cornea |
US9504607B2 (en) | 2010-05-07 | 2016-11-29 | Carl Zeiss Meditec Ag | Method and device for stabilizing the cornea |
DE102010020194B4 (en) | 2010-05-07 | 2022-09-08 | Carl Zeiss Meditec Ag | Device for stabilizing the cornea |
EP3459509A1 (en) * | 2017-09-20 | 2019-03-27 | Ziemer Ophthalmic Systems AG | Ophthalmological device for treating eye tissue using a pulsed processing laser beam |
US11090191B2 (en) | 2017-09-20 | 2021-08-17 | Ziemer Ophthalmic Systems Ag | Ophthalmological device for processing eye tissue by means of a pulsed processing laser beam |
DE102019122166A1 (en) * | 2019-08-19 | 2021-02-25 | Schwind Eye-Tech-Solutions Gmbh | Method for controlling an ophthalmic laser and treatment device |
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Legal Events
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
R409 | Internal rectification of the legal status completed | ||
R409 | Internal rectification of the legal status completed | ||
R082 | Change of representative |
Representative=s name: SIMANDI UND KOLLEGEN, DE |
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R081 | Change of applicant/patentee |
Owner name: DOCI INNOVATIONS GMBH, DE Free format text: FORMER OWNER: DOCI, VIOLETA, 22047 HAMBURG, DE Effective date: 20130215 |
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R082 | Change of representative |
Representative=s name: SIMANDI MEINKEN PATENTANWAELTE, DE Effective date: 20130215 Representative=s name: SIMANDI PATENTANWAELTE, DE Effective date: 20130215 |
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R012 | Request for examination validly filed |
Effective date: 20130311 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
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R124 | Re-establishment decision now final |