WO2014187435A1 - Trepan for corneal transplantation - Google Patents

Trepan for corneal transplantation Download PDF

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Publication number
WO2014187435A1
WO2014187435A1 PCT/CZ2014/000054 CZ2014000054W WO2014187435A1 WO 2014187435 A1 WO2014187435 A1 WO 2014187435A1 CZ 2014000054 W CZ2014000054 W CZ 2014000054W WO 2014187435 A1 WO2014187435 A1 WO 2014187435A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
cutting
asymetrically
transplantation
marking
edge
Prior art date
Application number
PCT/CZ2014/000054
Other languages
French (fr)
Inventor
Pavel Stodulka
Original Assignee
Pavel Stodulka
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

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/3205Excision instruments
    • A61B17/32053Punch like cutting instruments, e.g. using a cylindrical or oval knife
    • 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
    • A61F2/148Implantation instruments specially adapted therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00969Surgical instruments, devices or methods, e.g. tourniquets used for transplantation
    • 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
    • A61F9/00Methods 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
    • A61F9/007Methods or devices for eye surgery
    • A61F9/013Instruments for compensation of ocular refraction ; Instruments for use in cornea removal, for reshaping or performing incisions in the cornea
    • A61F9/0136Mechanical markers

Abstract

It consists of a surgical cutting device for cutting and marking of the cornea or its layer for unique positioning of the obverse and reverse sides during a consequent transplantation procedure, namely during the procedure of a sc. lamellar endothelial transplantation. The working part of the cutting device (1) is formed by a cutting edge (2) at its end. The cutting edge (2) of the tubular body (la) with the cutting device (1) is equipped with asymetrically shaped and/or asymetrically arranged notches (2a) for marking the donor membrane for its proper positioning during the consequent transplantation when the upper and lower sides of the graft are uniquely distinguishable by the edge relief on its periphery.

Description

TREPAN FOR CORNEAL TRANSPLANTATION

Field of technology

The invention is related to the trepan (trephine) for corneal transplantations that is designed for the use for cutting and marking the cornea of the eye and its layer (donor membrane) for its proper positioning during the consequent transplantation.

State of the art

During a corneal transplantation there arises a main issue of the proper positioning of the donor tissue. To ensure the necessary precision of the tissue position and the safety of the whole tissue transfer process, for instance a device according to the Japanese patent application 2002136540 is utilized. It is, however, rather a complex and cost-demanding surgical device.

The ways of a proper positioning of the donor corneal tissue in the transplantation process are dealt with also in me international patent application PCT WO 2008030718 and in the Russian patent 2187989. In all these stated cases the transplantation type is a so called penetrating transplantation when the whole cornea is intersected (the thickness of ca 1mm). It has not been possible so far to successfully identify (denote) the obverse and reverse side during a sc. lamellar transplantation of endothelium for instance when a 10 micrometer thin layer of cornea is used.

Principle of the invention

To some extent, a trepan (trephine) for corneal transplantation according to the invention contributes to solution of the above mentioned problem. It is a device comprising of a surgical cutting device designed for cutting or marking the cornea or its layers, the working part of which is formed by a tubular body with a cutting edge at the end. The nature of the invention lies in the fact that the cutting edge of the tubular body of the cutting device is equipped with asymetrically shaped and or asymetrically arranged notches for obvious identification of the obverse and reverse side of the donor membrane for its proper positioning during the consequent transplantation.

The asymetrically shaped and/or asymetrically arranged notches are on the periphery of the cutting edge of the tubular body of the trephine formed and situated so that the upper and lower side of the graft is uniquely distinguishable by the edge relief on its periphery.

The main advantage of the trephine according to the invention lies in an easy and quite precise and unambigious positioning of the obverse and reverse sides of the cornea during the transplantation procedure, mainly during the so called procedure of lamellar endothelial transplantation.

Brief description of drawings

To illustrate the principle nature of the invention, the drawings are attached, where Fig. 1 - represents the overall set of the trephine for corneal transplantation,

Fig. 2 - represents the detail of the working part of the cutting device of the trephine.

Example

The trephine for corneal transplantation set - a device containing a surgical instrument designed for cutting and marking of the cornea or some of its layers - in the exemplary embodiment (see Fig. 1) comprises of a stand 4 with the base 5, where on the base 5_a plastic bed is formed 6_for the donor tissue 8_and above the bed 6_in the stand 4_the surgical cutting device1 for cutting and marking of the donor tissue layer 8 (namely of the cornea) is attached and by a spring 3_to the stand 4 cushioned. A connector 7 for connecting a plastic tube for vacuum control of the tissue fixation is led to the bed 6.

The working part of the cutting instrument \ of the trephine (see the detail in Fig. 2) is formed by a tubular body la, typically a metal one with the cutting edge 2 at its end. The nature of the invention lies in the fact that the cutting edge 2 of the tubular body1 of the cutting device is equipped with asymetrically shaped and/or asymetrically arranged notches 2a for marking the donor membrane for its proper positioning during the consequent transplantation. As is shown in Fig. 2, the asymetrically Shaped and/or asymetrically arranged notches 2a are on the periphery of the cutting edge 2_of the tubular body I of the trephine shaped and situated so that the upper and lower sides - the obverse and reverse sides of the graft then becomes uniquely distinguishable by the edge relief on its periphery.

Claims

C L A I M S
1. The trepan (trephine) for corneal transplantation containing a surgical cutting instrument for cutting and marking the cornea or some of its layers, whereas the working part of the cutting instrument is formed by a tubular body with the cutting edge at its end, characterized in that the cutting edge (2) of the tubular body (la) of the cutting instrument (1) is equipped with asymetrically shaped and/or asymetrically arranged notches (2a) for marking the donor membrane for its proper positioning during the consequent transplantation.
2. The trepan (trephine) according to claim 1 characterized by its asymetrically shaped and/or asymetrically arranged notches (2a), on the circumference of the cutting edge (2) of the tubular body (1) of the trephine are formed and located so that the upper and lower side of the cut' transplant graft is clearly differentiated by the relief of me' edge oh its circumference.
PCT/CZ2014/000054 2013-05-24 2014-05-14 Trepan for corneal transplantation WO2014187435A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CZPV2013-385 2013-05-24
CZ20130385 2013-05-24

Publications (1)

Publication Number Publication Date
WO2014187435A1 true true WO2014187435A1 (en) 2014-11-27

Family

ID=50980888

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2014/000054 WO2014187435A1 (en) 2013-05-24 2014-05-14 Trepan for corneal transplantation

Country Status (1)

Country Link
WO (1) WO2014187435A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718420A (en) * 1986-03-06 1988-01-12 Lemp Michael A Method and apparatus for trephining corneal tissue in preparation for keratoplasty
WO1996013215A1 (en) * 1994-08-12 1996-05-09 University Of South Florida Sutureless corneal transplantation apparatus and method
US5649944A (en) * 1994-08-12 1997-07-22 Collins; Joseph Patrick Apparatus for preparing cornea material for tabbed (sutureless) transplantation
JP2002136540A (en) 2000-09-08 2002-05-14 Anton Mayer & Co Ag Apparatus for transplanting cornea to eye of patient
RU2187989C2 (en) 1999-12-14 2002-08-27 Государственное учреждение Межотраслевой научно-технический комплекс "Микрохирургия глаза" Surgical method for treating cornea transplant diseases
WO2008030718A2 (en) 2006-09-05 2008-03-13 Amo Development, Llc System and method for marking corneal tissue in a transplant procedure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718420A (en) * 1986-03-06 1988-01-12 Lemp Michael A Method and apparatus for trephining corneal tissue in preparation for keratoplasty
WO1996013215A1 (en) * 1994-08-12 1996-05-09 University Of South Florida Sutureless corneal transplantation apparatus and method
US5649944A (en) * 1994-08-12 1997-07-22 Collins; Joseph Patrick Apparatus for preparing cornea material for tabbed (sutureless) transplantation
RU2187989C2 (en) 1999-12-14 2002-08-27 Государственное учреждение Межотраслевой научно-технический комплекс "Микрохирургия глаза" Surgical method for treating cornea transplant diseases
JP2002136540A (en) 2000-09-08 2002-05-14 Anton Mayer & Co Ag Apparatus for transplanting cornea to eye of patient
WO2008030718A2 (en) 2006-09-05 2008-03-13 Amo Development, Llc System and method for marking corneal tissue in a transplant procedure

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