WO2008131834A1 - Verre de contact à marquage - Google Patents

Verre de contact à marquage Download PDF

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Publication number
WO2008131834A1
WO2008131834A1 PCT/EP2008/002458 EP2008002458W WO2008131834A1 WO 2008131834 A1 WO2008131834 A1 WO 2008131834A1 EP 2008002458 W EP2008002458 W EP 2008002458W WO 2008131834 A1 WO2008131834 A1 WO 2008131834A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact glass
marking
treatment
cornea
mark
Prior art date
Application number
PCT/EP2008/002458
Other languages
German (de)
English (en)
Inventor
Mark Bischoff
Gregor Stobrawa
Dirk MÜHLHOFF
Original Assignee
Carl Zeiss Meditec Ag
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 Carl Zeiss Meditec Ag filed Critical Carl Zeiss Meditec Ag
Publication of WO2008131834A1 publication Critical patent/WO2008131834A1/fr

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
    • 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
    • A61F9/009—Auxiliary devices making contact with the eyeball and coupling in laser light, e.g. goniolenses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/08—Accessories or related features not otherwise provided for
    • A61B2090/0814—Preventing re-use
    • 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

Definitions

  • the invention relates to a contact lens for ophthalmic surgery, in particular the femtosecond LASIK (laser in situ keratomileus).
  • a sharply focused beam of a femtosecond laser is guided deliberately in the cornea to at least partially separate the corneal tissue by means of optical breakthroughs in order to either cut a flap, as it does for the subsequent
  • Treatment of the cornea with an excimer laser is needed, or within the
  • Such a device of the Applicant is under the name VISUM AX on the market.
  • the purpose is a so-called contact glass, which is pressed onto the cornea to bring them into the desired shape.
  • the object of the invention is to effectively prevent the multiple use of a contact glass.
  • the contact glass has a mark which can identify the treatment device.
  • this marking manufacturer can be individually introduced into each contact glass, for example in the form of a code, the treatment device checks this code, stores this, and refuses to continue work when it detects a contact glass already used. It is particularly advantageous if the marking can be generated by the treatment device itself, for example by the treatment beam or by another device which, for example, when inserting or removing the contact glass, a mechanical marking or changing optical properties (for example, applying color markings or the like) makes.
  • the marking is made by the treatment beam, this can take place before, during or after the treatment.
  • FIG. 1 is a schematic representation of a laser processing apparatus for an ophthalmological procedure
  • Fig. 2 is a perspective view of a contact glass for the
  • FIG. 3 is a sectional view of the contact glass of Figure 2.
  • FIG. 1 shows a treatment device for an ophthalmological procedure similar to that described in DE 103 49 297 or US 5549632.
  • the treatment device 1 of FIG. 1 serves to execute an ametropia correction on an eye 2 of a patient in accordance with the known LASIK method.
  • the treatment device 1 has a laser 3 which emits pulsed laser radiation.
  • the pulse duration is, for example, in the femtosecond range, and the laser radiation acts by means of non-linear optical effects in the cornea in the manner described above.
  • the treatment beam 4 delivered by the laser 3 along an optical axis Al falls onto a beam splitter 5 which directs the treatment beam 4 onto a scanning device 6.
  • the scanning device 6 has two scanning mirrors 7 and 8, which are rotatable about mutually orthogonal axes, so that the scanning device 6 deflects the treatment beam 4 two-dimensionally.
  • An adjustable projection optics 9 focuses the treatment beam 4 on or into the eye 2.
  • the projection optics 9 in this case has two lenses 10 and 11.
  • the lens 11 is a contact glass 2 arranged downstream, which is connected via a holder H fixed to the lens 1 1 and thus the beam path of the treatment device 1.
  • the contact glass 12, which will be described in more detail, abuts against the cornea of the eye 2.
  • the optical combination of treatment device 1 with contact glass 2 attached thereto causes the treatment beam 4 to be concentrated in a focus 13 located in the cornea of the eye 2.
  • the scanning device 6, as well as the laser 3 and the projection optics 9, are controlled by a control unit 14 via control lines (unspecified).
  • the control unit 14 determines the position of the focus 13 both transversely to the optical axis Al (by the scanning mirrors 7 and 8) and in the direction of the optical axis Al (by the projection optics
  • the control unit 14 further reads out a detector 15, which reads radiation backscattered by the cornea, which passes through the beam splitter 5 as retro-reflection 16. This can be done confocal imaging. The importance of the detector 15 will be discussed later.
  • the contact glass 12 ensures that the cornea of the eye 2 receives a desired desired shape.
  • the eye 2 is due to the plant of the cornea on the contact glass 12 in a predetermined position to the contact glass 12 and thus to the associated treatment device. 1
  • the focus 13 can be positioned three-dimensionally exactly in the cornea, but also within the contact glass 12.
  • FIG. 2 shows a perspective view of the contact glass 12.
  • the contact glass 12 has a glass body 20, which is transparent to the treatment beam 4.
  • the treatment beam 4 is coupled; this top 21 is associated with the lens 1 1.
  • the cornea is located on an underside 22 of the contact glass 12. As the sectional view of Figure 3 shows, the bottom 22 is curved in the desired desired shape so that it causes the desired shape of the cornea upon full contact of the eye 2.
  • a flange surface 23 is formed on the contact glass 12, at which the
  • Fastening means which is adapted to the one closure mechanism realizing holder H.
  • the main axis of symmetry of the frusto-conical glass body 20 is adjusted by attachment via the flange surface 23 in fixed connection with the treatment device 21 and fitting the optical axis Al.
  • the marking 24 consists of several zones 25, which are at least partially reflective for the radiation emitted by the laser 3. These zones can form an individual code which uniquely identifies the contact glass, eg in the form of a serial number. This is detected by the detector 15 in conjunction with the controller 14, stored in the controller 14 and compared with the codes already stored in previous treatments. If this comparison shows that the currently inserted contact glass 12 has already been used earlier, the execution of the treatment by the control unit 14 can be prevented until a new, unused contact glass 12 has been inserted.
  • the mark may also be on the top 21 or the bottom 22 of the contact glass 12, d. H. be mounted on the entrance or exit surface of the adapter in the form of any codes.
  • Controller 14 thus recognize whether the treatment beam 4 is directed to a zone 25 and thus successively recognize the marking 24 and thus classify the contact glass as already used.
  • the described method is also applicable to a certain number of
  • the size of scattering centers can be inserted as a marker and thus contain alphanumeric information.
  • the geometric shape of the code is not limited to lines (barcode) but can also be arranged radially or flat.
  • the code can be designed in such a way that even light diffraction can be used as a physical detection effect. It is also possible to evaluate the location at which the scattering centers are located within the contact glass 12 (eg at or near the top 21, at or near the bottom 22, etc.).
  • markers which were not introduced into the contact glass 12 specifically for the purpose described above, but to use those markings which are introduced as a by-product of the use of the contact glass 12, as it were.
  • These markers may e.g. exist in scattering centers which are caused by the laser interaction during the actual treatment, in particular annular or ring segment-like incisions in the surface of the contact glass 12 as they arise at the conclusion of a femtosecond flap procedure.
  • contaminants introduced during the therapy of the contact glass 12 can also be interpreted as a code or marking.
  • the surface ablation can be used or a photochemical interaction within a possibly existing plastic element which leads to a change in the spectral transmission. It is likewise possible to effect refractive index changes within the transparent medium by means of laser radiation and to use this information as a marking.

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (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

Verre de contact pour la chirurgie oculaire, en particulier pour la kératomileusie in situ assistée par laser femtoseconde (LASIK). Pour empêcher une réutilisation du verre de contact, ce dernier porte un marquage qui est détecté par le système laser femtoseconde. De manière particulièrement avantageuse, le marquage est produit par le système laser femtoseconde lui-même.
PCT/EP2008/002458 2007-04-26 2008-03-28 Verre de contact à marquage WO2008131834A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007020565A DE102007020565A1 (de) 2007-04-26 2007-04-26 Kontaktglas mit Markierung
DE102007020565.3 2007-04-26

Publications (1)

Publication Number Publication Date
WO2008131834A1 true WO2008131834A1 (fr) 2008-11-06

Family

ID=39535602

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/002458 WO2008131834A1 (fr) 2007-04-26 2008-03-28 Verre de contact à marquage

Country Status (2)

Country Link
DE (1) DE102007020565A1 (fr)
WO (1) WO2008131834A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2811988C (fr) 2010-09-02 2016-11-01 Optimedica Corporation Interface patient pour un diagnostic ophtalmologique et des interventions chirurgicales
US9044302B2 (en) 2011-10-21 2015-06-02 Optimedica Corp. Patient interface for ophthalmologic diagnostic and interventional procedures
AU2012325785B8 (en) * 2011-10-21 2016-11-24 Optimedica Corporation Patient interface for ophthalmologic diagnostic and interventional procedures
US9237967B2 (en) 2011-10-21 2016-01-19 Optimedica Corporation Patient interface for ophthalmologic diagnostic and interventional procedures
US8863749B2 (en) 2011-10-21 2014-10-21 Optimedica Corporation Patient interface for ophthalmologic diagnostic and interventional procedures
EP2633841B1 (fr) 2012-02-28 2017-08-16 Ziemer Ophthalmic Systems AG Dispositif de traitement de tissus oculaires par rayon laser à impulsion

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987005496A1 (fr) * 1986-03-19 1987-09-24 Summit Technology, Inc. Profilage de surfaces par laser
EP1034755A1 (fr) * 1999-03-11 2000-09-13 Intralase Corporation Systeme de chirurgie a laser des yeux, avec lentille de contact jetable
WO2006066035A2 (fr) * 2004-12-15 2006-06-22 Alcon, Inc. Systeme et procede d'identification et de verification de d'un instrument de chirurgie ophtalmique et de ses composants
WO2007022993A2 (fr) * 2005-08-25 2007-03-01 Carl Zeiss Meditec Ag Verre de contact pour la chirurgie oculaire

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5549632A (en) 1992-10-26 1996-08-27 Novatec Laser Systems, Inc. Method and apparatus for ophthalmic surgery
CH694936A5 (de) * 2000-10-19 2005-09-30 Haag Ag Streit Ophthalmologisches Kontaktglas.
DE10339520A1 (de) * 2003-08-21 2005-03-17 Potsdamer Augenklinik Im Albrecht-Von Graefe-Haus Gmbh Einrichtung zum Einbringen von Präzisionsschnitten und -öffnungen in die Hornhaut des Auges und Verfahren zu ihrer Anwendung
DE10349297B4 (de) 2003-10-23 2015-05-13 Carl Zeiss Meditec Ag Adapter für die Laserbearbeitung und Laserbearbeitungsvorrichtung für einen solchen Adapter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987005496A1 (fr) * 1986-03-19 1987-09-24 Summit Technology, Inc. Profilage de surfaces par laser
EP1034755A1 (fr) * 1999-03-11 2000-09-13 Intralase Corporation Systeme de chirurgie a laser des yeux, avec lentille de contact jetable
WO2006066035A2 (fr) * 2004-12-15 2006-06-22 Alcon, Inc. Systeme et procede d'identification et de verification de d'un instrument de chirurgie ophtalmique et de ses composants
WO2007022993A2 (fr) * 2005-08-25 2007-03-01 Carl Zeiss Meditec Ag Verre de contact pour la chirurgie oculaire

Also Published As

Publication number Publication date
DE102007020565A1 (de) 2008-10-30

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