DE3442339A1 - Cutting head for cutting circular areas from the cornea of the eyes - Google Patents

Cutting head for cutting circular areas from the cornea of the eyes

Info

Publication number
DE3442339A1
DE3442339A1 DE19843442339 DE3442339A DE3442339A1 DE 3442339 A1 DE3442339 A1 DE 3442339A1 DE 19843442339 DE19843442339 DE 19843442339 DE 3442339 A DE3442339 A DE 3442339A DE 3442339 A1 DE3442339 A1 DE 3442339A1
Authority
DE
Germany
Prior art keywords
cutting head
cornea
cutting
eyes
face
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Withdrawn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
DE19843442339
Other languages
German (de)
Inventor
Siegfried DDR 8800 Zittau Deutschmann
Hans Prof. Dr.sc.med. DDR 1405 Glienicke Gliem
Fritz DDR 8801 Mittelherwigsdorf Jyrch
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 DE19843442339 priority Critical patent/DE3442339A1/en
Priority to CH572784A priority patent/CH666174A5/en
Publication of DE3442339A1 publication Critical patent/DE3442339A1/en
Withdrawn legal-status Critical Current

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
    • A61F9/013—Instruments for compensation of ocular refraction ; Instruments for use in cornea removal, for reshaping or performing incisions in the cornea

Abstract

The cutting head has a circular, arched front face by which it is applied on to the cornea to be cut. The front face is perforated. The holes are in connection with a vacuum device, as a result of which the cutting head can be fixed on the eye. The cornea can be deformed as a function of the reduced pressure generated, so that it is possible to remove conical transplants in addition to cylindrical transplants even when the knife lies parallel with the axis of the cutting head. <IMAGE>

Description

Schneidkopf zum Schneiden kreisrunder Flächen aus der Hornhaut von Augen Die Erfindung betrifft einen Schneidkopf zum Herausschneiden kreisrunder Flächen aus der Hornhaut von Augen, um entweder ein Transplantat zu gewinnen, oder aber um einen zu ersetzenden Teil der Hornhaut herauszuschneiden0 Ss ist ein Schneidkopf mit einem lanzettförmigen Messer bekannt (DE-EB 27 41 663), bei dem das Messer am Umfang einer auf die Hornhaut aufzusetzenden Linse geführt wird.Cutting head for cutting circular surfaces from the cornea of Eyes The invention relates to a cutting head for cutting out circular surfaces from the cornea of the eyes to either harvest a graft or else to cut out a part of the cornea to be replaced0 Ss is a cutting head known with a lanceolate knife (DE-EB 27 41 663), in which the knife on Perimeter of a lens to be placed on the cornea is performed.

Das Messer ist zur optischen Achse des Auges geneigt, so daß mit diesem Schneidkopf konische Hornhautscheiben herausgeschnitten werden können.The knife is inclined to the optical axis of the eye, so that with this Cutting head, conical corneal disks can be cut out.

Dieser Schneidkopf hat den Nachteil, daß zum Auge hin eine Fixierbarkeit nicht gegeben ist und damit keine exakten Kreisschnitte ausgeführt werden können. Außerdem entstehen bei diesem Schneidkopf nach innen konische,sich verjüngende Transplantate, die sich nicht so leicht befestigen lassen, da durch den Augeninnendruck das Transplantat abgedrückt wird.This cutting head has the disadvantage that it can be fixed towards the eye is not given and therefore no exact circular cuts can be made. In addition, this cutting head produces inwardly conical, tapering transplants, which cannot be attached so easily because the intraocular pressure causes the graft is pulled.

Ziel der erfindung ist, das Herausschneiden von exakt geschnittenen Hornhautscheiben zu gewährleisten, Der Erfindung liegt die Aufgabe zugrunde, einen Schneidkopf zu schaffen, der sich zum Auge fixieren läßt und mit dem erforderlichenfalls sich zum Augeninnern konisch verdickende 'Gransplantate gewonnen werden können0 Diese Aufgabe wird erfindungsgemäß durch einen Schneidkopf gelöst, welcher eine kreisrunde gewölbte Stirnfläche aufweist, die auf die Oberfläche der Hornhaut aufsetzbar ist, wobei ein Schneidmesser am Umfang der Stirnfläche entlang führbar ist, bei dem erfindungsgemäß das Messer parallel zur Achse des Schneidkopfes geführt ist, die Stirnfläche des Schneidkopfes perforiert ist und die Öffnungen mit einer Vakuumeinrichtung in Verbindung stehen, Die Perforation besteht vorzugsweise aus sechseckigen Löchern, die bienenwabenförmig angeordnet sind.The aim of the invention is to cut out precisely cut To ensure corneal discs, the invention is based on the object of a To create cutting head that can be fixed to the eye and with the necessary grafts that thicken conically towards the inside of the eye can be obtained0 These The object is achieved according to the invention by a cutting head which is circular has a curved end face that can be placed on the surface of the cornea, wherein a cutting knife can be guided along the circumference of the end face, in the case of the one according to the invention the knife is guided parallel to the axis of the cutting head, the face of the Cutting head is perforated and the openings with a vacuum device in connection stand, The perforation preferably consists of hexagonal holes that are honeycomb-shaped are arranged.

Mit dieser Vorrichtung können in Abhängigkeit vom erzeugten Unterdruck unterschiedliche Schnitte ausgeführt werden, Wird die zu sohneidende Fläche verfnrmuxlgsfrei angesaugt und während des Schneidvorganges konstant gehalten, so werden zylindrische Transplantate gewonnen, Wird jedoch die Hornhaut während des Schneidvorganges so angesaugt, daß sie sich verformt, so erfolgt der Schnitt unter einem bestimmten Winkel zur normalen Oberfläche der Hornhaut, so daß sich zum Augeninnern hin konisch verdickende Transplantate gewonnen werden können.With this device, depending on the negative pressure generated Different cuts are carried out, the area to be cut becomes free of distortion sucked in and kept constant during the cutting process, cylindrical Grafts obtained, however, the cornea becomes that way during the cutting process sucked in that it deforms, the cut is made under a certain Angle to the normal surface of the cornea so that it tapers towards the inside of the eye thickening grafts can be obtained.

Analog kann in der Hornhaut des zu Operierenden eine Öffnung mit gleicher Konizität erzeugt werden.Similarly, in the cornea of the person to be operated on, an opening with the same Conicity are generated.

Die Erfindung soll nachfolgend an einem Ausführungsbeispiel und den zugehörigen Zeichnungen näher erläutert werden0 Es zeigen: Fig. 1: eine Seitenansicht des Schneidkopfes und Flgo 2: eine Draufsicht auf die Stirnfläche des Schneidkopfes An der Schneidkopfhalterung 1 ist ein umlaufendes Messer befestigt. Im Zentrum der Schneidkopfhalterung ist ein Saugtrichter 3 befestigt, der bei der Ausführung des Schnittes mit seiner eine Perforation 4 aufweisenden Stirnfläche auf die Hornhaut 5 aufgesetzt wird.The invention is based on an embodiment and the The accompanying drawings are explained in more detail. They show: FIG. 1: a side view of the cutting head and Flgo 2: a top view of the end face of the cutting head At a rotating knife is attached to the cutting head holder 1. At the center of the A suction funnel 3 is attached to the cutting head holder, which in the execution of the Cut with its end face having a perforation 4 onto the cornea 5 is put on.

Claims (2)

Patentanspruche: 1. Schneidkopf zum Schneiden kreisrunder Flächen aus der Hornhaut von Augen, welcher eine kreisrunde gewölbte Stirnfläche aufweist, die auf die Oberfläche der Hornhaut aufsetzbar ist, wobei das Schneidmesser am Umfang der Stirnfläche entlang führbar ist, dadurch gekennzeichnet, daß das Messer parallel zur Achse des Schnefdkopfes geführt ist, die Stirnfläche des Schneidkopfes perforiert ist und die Öffnungen mit einer Vakuumvorrichtung in Verbindung stehen.Claims: 1. Cutting head for cutting circular surfaces from the cornea of the eyes, which has a circular arched face, which can be placed on the surface of the cornea, with the cutting knife on the circumference can be guided along the end face, characterized in that the knife is parallel is guided to the axis of the cutting head, the face of the cutting head is perforated and the openings are in communication with a vacuum device. 2. Schneidkopf nach Anspruch 1, dadurch gekennzeichnet, daß die Perforation aus sechseckigen Löchern besteht, die bienenwabenförmig angeordnet sind02. Cutting head according to claim 1, characterized in that the perforation consists of hexagonal holes arranged in a honeycomb shape0
DE19843442339 1984-11-20 1984-11-20 Cutting head for cutting circular areas from the cornea of the eyes Withdrawn DE3442339A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19843442339 DE3442339A1 (en) 1984-11-20 1984-11-20 Cutting head for cutting circular areas from the cornea of the eyes
CH572784A CH666174A5 (en) 1984-11-20 1984-11-30 CUTTING HEAD FOR CUTTING CIRCULAR AREAS FROM THE CORNEA OF EYES.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843442339 DE3442339A1 (en) 1984-11-20 1984-11-20 Cutting head for cutting circular areas from the cornea of the eyes

Publications (1)

Publication Number Publication Date
DE3442339A1 true DE3442339A1 (en) 1986-05-22

Family

ID=6250732

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843442339 Withdrawn DE3442339A1 (en) 1984-11-20 1984-11-20 Cutting head for cutting circular areas from the cornea of the eyes

Country Status (2)

Country Link
CH (1) CH666174A5 (en)
DE (1) DE3442339A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796623A (en) * 1987-07-20 1989-01-10 The Cooper Companies, Inc. Corneal vacuum trephine system
DE3936571A1 (en) * 1989-03-03 1990-09-06 Zirm Mathias Eye holding device for operating theatre - consists of cutting-block lined with elastic membrane that can be blown up with blow-support

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992009236A1 (en) * 1990-12-03 1992-06-11 Valerian Petrovich Voinov Device for dissection of skin tissue

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074407A (en) * 1956-09-17 1963-01-22 Marguerite Barr Moon Eye Res F Surgical devices for keratoplasty and methods thereof
DE2741663C2 (en) * 1976-09-17 1986-05-07 The University Of Melbourne, Parkville, Victoria Cornea cutter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074407A (en) * 1956-09-17 1963-01-22 Marguerite Barr Moon Eye Res F Surgical devices for keratoplasty and methods thereof
DE2741663C2 (en) * 1976-09-17 1986-05-07 The University Of Melbourne, Parkville, Victoria Cornea cutter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796623A (en) * 1987-07-20 1989-01-10 The Cooper Companies, Inc. Corneal vacuum trephine system
DE3936571A1 (en) * 1989-03-03 1990-09-06 Zirm Mathias Eye holding device for operating theatre - consists of cutting-block lined with elastic membrane that can be blown up with blow-support

Also Published As

Publication number Publication date
CH666174A5 (en) 1988-07-15

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