US2473968A - Corneal trephine - Google Patents

Corneal trephine Download PDF

Info

Publication number
US2473968A
US2473968A US710081A US71008146A US2473968A US 2473968 A US2473968 A US 2473968A US 710081 A US710081 A US 710081A US 71008146 A US71008146 A US 71008146A US 2473968 A US2473968 A US 2473968A
Authority
US
United States
Prior art keywords
trephine
section
handle
eye
cutting
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.)
Expired - Lifetime
Application number
US710081A
Inventor
Paton Richard Townley
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 US710081A priority Critical patent/US2473968A/en
Application granted granted Critical
Publication of US2473968A publication Critical patent/US2473968A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the 'invention herein disclosed relates to a corneal trephine that is particularly adapted for removing a section of the cornea of the human eye.
  • a section of the cornea of each eye is removed.
  • the section taken from the donors eye is inserted in the opening made in the cornea of the recipients eye and held therein by stitches.
  • the section removed from the donors eye will lit the opening made in the eye of the recipient, and also that the lens and iris of the recipients eye is not injured in cutting through the cornea.
  • a corneal trephine that is provided with an adjustable stop that helps to prevent cutting through the cornea of the eye a suiiicient distance to injure the lens or the iris ci the eye; that protects the cutting edge of the trephine while it is being sterilized; and that is removable for maintenance and cleaning.
  • a trephine is provided with a hollow end section having a circular cutting edge with which an adjustable stop is associated, the stop forming a circumambient shoulder about the hollow end section spaced from the cutting edge thereof.
  • the stop is adjustable to vary the distance of the shoulder from the cutting edge of the end section.
  • the stop protects the'cutting edge of the trephine from contact with hard surfaces such, for example, as when the trephine is placed in a sterilizer.
  • a corneal trephine constituting one specic embodiment of the invention is illustrated in the accompanying drawing and described in detail below, from which description a clearer understanding of the invention may be had.
  • FIG. 1 which is a perspective View of a trephine embodying the invention
  • Fig. 2 which is a side elevation of the same showing the trephine of Fig. 1 rotated about its longitudinal axis through substantially ninety degrees;
  • Fig. 3 which is an enlarged, side elevation of the two. parts making up the trephine
  • Fig. 4 which is an end view from the cutting edge of the trephine
  • Fig. 5 which is a sectional elevation of a human eye.
  • the trephine illustrated in the drawing includes a hollow cylindrical end or cutting section I, having a razor-sharp knife edge 2, and a nger piece or handle 3 united to the cylindrical end section and by means of which the trephine may be manipulated.
  • the outer surface of the cutting section of the particular trephine illustrated is tapered slightly from the knife edge toward the handle for the purpose of ease in resharpening the knife edge.
  • the handle is spaced axially from the end section. Spaced, uniting elements 4 and 5, formed integral with the end section I and the handle unite the handle and the end section.
  • the handle 3 is hollow and knurled on its outer surface.
  • a portion 6 of reduced diameter is formed at the end of the handle, the end toward the end section I, and it has a thread l formed thereon.
  • the uniting elements 4 and 5, which are diametrically opposite each other, extend from the end of the portion 6 to the adjacent end of the cutting section I. As illustrated, these uniting elements are rather narrow and thin.
  • the inner and outer surfaces thereof are respectively cylindrically concaved and convexed.
  • a slight circular shoulder or ring 8 is formed at the cutting section with which the uniting elements are integral.
  • the distance between the inner surfaces of the uniting elements 4 and 5 is equal to the diameter of the bore through the portion B and the hollow cylindrical end section I.
  • the bore through the handle is made slightly larger to reduce the weight of the trephine.
  • the trephine illustrated in the drawing is provided with a stop.
  • this consists of a circumambient shoulder surrounding the cutting section and spaced the required distance from the knife edge 2 which is adjustable with respect to the knife edge.
  • the particular stop illustrated includes a cylindrical portion 9, slightly tapered, which surrounds a part of the cutting section I and forms a circumambient shoulder Il) around the cutting section spaced from the cutting edge 2; a hub II spaced from the portion 9; and two spaced longitudinal uniting elements I2 and I3 uniting the portion 9 and I I.
  • the hub is threaded internally and screwed on to the portion 6 extending from the handle. By means of this threaded engagement, the stop may be adjusted to vary the distance of the shoulder I from the cutting edge 2.
  • a set screw I4 serves to secure the hub I I, when positioned, against relative movement with respect to the handle.
  • the uniting elements I2 and I3 are of the same length as the uniting elements 4 and 5. Like the uniting elements 4 and 5 they are diametrically opposite and their inner surfaces are cylindrical on a radius substantially equal to the radius of the convexed outer surfaces of the elements 4 and 5. In addition, the elements I2 and I3 are of the same width as the elements 4 and 5.
  • a human eye is represented in general form.
  • the eye ball so called, consists of a sclerotic coat I5 that is extended in front as a transparent coat I6 which constitutes the cornea.
  • a lens I 'I of transparent, elastic substance is behind the cornea, spaced therefrom. Within the space between the cornea and the lens, there is aqueous iluid. Extending over the front of the lens is the iris I8.
  • the trephine of this invention is primarily for the purpose of removing a section I9, circular in conguration, from the cornea of the eye.
  • the surgeon using the trephine, removes one or more sections of the cornea of the donors eye and a similar sized section of the recipients eye. This is accomplished by rotating the trephine forcing the knife edge 2 of the cutting section I of the trephine through the cornea of the donors eye and subsequently through the cornea of the recipients eye. If a complete round section is not obtained, the section is completed by means of specially made scissors.
  • the corneal section so removed from the recordedrs eye will exactly it the opening made in the cornea of the recpients eye in which it is placed and therein held by stitches.
  • the shoulder I0 formed by the stop helps to prevent cutting through the cornea a sufficient distance to cut or injure the lens I'I or the iris I8 of the eye.
  • a section of a cornea cut by the trephine is readily removed from the trephine without injury thereto.
  • the trephine is readily cleaned of particles of any nature and is completely accessible for sterilization.
  • the cylindrical portion 9 of the stop serves to protect the cutting edge of the trephine when the trephine is not in use.
  • a corneal trephine of the kind described comprising in combination a hollow, cylindrical end section having a knife edge, a handle spaced from the hollow end section, an adjustable stop associated with said hollow, cylindrical end section, and means for positioning the stop at different distances from the knife edge.
  • a corneal trephine of the kind described comprising in combination a hollow, cylindrical end section having a knife edge, a handle spaced from the hollow end section, an adjustable stop associated with said hollow, cylindrical end section and interengaging means on said stop and said handle for positioning the stop in various positions with respect to knife edge of said hollow end section.
  • a corneal trephine of the kind described comprising in combination a hollow cylindrical end section having a knife edge, a handle secured to the hollow cylindrical end section, and a removable element having a shoulder adjacent the knife edge of the hollow cylindrical section and constituting a stop.
  • a corneal trephine of the kind described comprising in combination a hollow ⁇ cylindrical end section having a knife edge, a handle axially spaced from the hollow cylindrical end section, circumferentially spaced uniting elements extending between and uniting the hollow cylindrical end section and the handle, a stop including a cylindrical portion surrounding the hollow cylindrical end section ⁇ and forming a circumambient shoulder, a portion united to the handle, andv spaced uniting elements extending between the cylindrical portion and the portion uniting with the handle.
  • a corneal trephine of the kind described comprising in. combination a hollow cylindrical end section having a knife edge... a ⁇ hollowcylindrical handle axially spaced from said hollow cylindrical end section, a pair of diametri-cally opposite uniting elements extending between and uniting the hollow cylindrical end section and the handle, a removable stop including a cylindrical portion surrounding the hollow cylindrical end portion and forming a circumambient shoulder spaced from the knife edge thereof, a portion threaded on the handle, and diametrically opposed uniting elements extending from the cylindrical portion of the stop to the portion on the handle, said uniting elements of the stop being of the same width as the first mentioned uniting elements.
  • a surgical instrument for cutting a circular opening in the eyeball comprisingv a tubular knife having at its outer end a circular cutting edge, an elongate carrier on the outer end of which said knife is fixed and having on its opposite end a portion manipulable t'wirlingly t0 rotate saidv knife for cutting into the eyeball, and means on the carrier variably conditionable to limit the maximum depth of such cut.
  • a surgical instrument for cutting a circular opening in the eyeball comprising a tubular knife having at its outer end a circular cutting edge, an elongate carrier on the outer end' of which said knife is fixedA and: having on its opposite end a portion manipulable twirlingly to rotate said knife for cutting into the eyeball, and means on the carrier'variably condltionable to limit the maximum depth of such cut, said means comprising an elongate tubular member sleeved on said carrier.
  • a surgical instrument for cutting a circular opening in the eyeball comprising a tubular knife having at its outer end a circular cutting edge, an elongate carrier on the outer end of which said knife is fixed and having on its opposite end a portion manipulable twirlingly to rotate ⁇ said knife for cutting into' ther eyebalL.
  • means on the carrier variably conditionable, to limit the maximum depth of such cut, said means comprising an elongate tubular member sleeved-on said' carrier, and spirally adjustable thereon.

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (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)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

June 251, 1949. R. T. PATON CQRNEAL TREPHINE Filed Nov. 15, 1946 Snventor /P/c/MRQ 7' ou//VLEY PA 70N (Ittorneg Patented June 21, 1949 UNITED STATES PATENT OFFICE 8 Claims.
The 'invention herein disclosed relates to a corneal trephine that is particularly adapted for removing a section of the cornea of the human eye. v
In transplanting the cornea oi the eye of a donor to that oi a recipient, a section of the cornea of each eye is removed. The section taken from the donors eye is inserted in the opening made in the cornea of the recipients eye and held therein by stitches. In performing such an operation care must be taken that the section removed from the donors eye will lit the opening made in the eye of the recipient, and also that the lens and iris of the recipients eye is not injured in cutting through the cornea.
By the invention herein disclosed, there is provided a corneal trephine that is provided with an adjustable stop that helps to prevent cutting through the cornea of the eye a suiiicient distance to injure the lens or the iris ci the eye; that protects the cutting edge of the trephine while it is being sterilized; and that is removable for maintenance and cleaning. In accordance with the invention, a trephine is provided with a hollow end section having a circular cutting edge with which an adjustable stop is associated, the stop forming a circumambient shoulder about the hollow end section spaced from the cutting edge thereof. The stop is adjustable to vary the distance of the shoulder from the cutting edge of the end section. In addition, the stop protects the'cutting edge of the trephine from contact with hard surfaces such, for example, as when the trephine is placed in a sterilizer.
A corneal trephine constituting one specic embodiment of the invention is illustrated in the accompanying drawing and described in detail below, from which description a clearer understanding of the invention may be had.
' The drawing includes:
Fig. 1 which is a perspective View of a trephine embodying the invention; Fig. 2 which is a side elevation of the same showing the trephine of Fig. 1 rotated about its longitudinal axis through substantially ninety degrees;
Fig. 3 which is an enlarged, side elevation of the two. parts making up the trephine;
Fig. 4 which is an end view from the cutting edge of the trephine; and
Fig. 5 which is a sectional elevation of a human eye.
In general, the trephine illustrated in the drawing includes a hollow cylindrical end or cutting section I, having a razor-sharp knife edge 2, and a nger piece or handle 3 united to the cylindrical end section and by means of which the trephine may be manipulated. The outer surface of the cutting section of the particular trephine illustrated is tapered slightly from the knife edge toward the handle for the purpose of ease in resharpening the knife edge. Desirably, the handle is spaced axially from the end section. Spaced, uniting elements 4 and 5, formed integral with the end section I and the handle unite the handle and the end section.
The handle 3 is hollow and knurled on its outer surface. A portion 6 of reduced diameter is formed at the end of the handle, the end toward the end section I, and it has a thread l formed thereon. The uniting elements 4 and 5, which are diametrically opposite each other, extend from the end of the portion 6 to the adjacent end of the cutting section I. As illustrated, these uniting elements are rather narrow and thin. The inner and outer surfaces thereof are respectively cylindrically concaved and convexed. A slight circular shoulder or ring 8 is formed at the cutting section with which the uniting elements are integral. The distance between the inner surfaces of the uniting elements 4 and 5 is equal to the diameter of the bore through the portion B and the hollow cylindrical end section I. The bore through the handle is made slightly larger to reduce the weight of the trephine. By providing a bore through the trephine and the opening provided by the uniting elements 4 and 5, particles are readily removed and the instrument is readily cleaned.
The trephine illustrated in the drawing is provided with a stop. Primarily, this consists of a circumambient shoulder surrounding the cutting section and spaced the required distance from the knife edge 2 which is adjustable with respect to the knife edge. The particular stop illustrated includes a cylindrical portion 9, slightly tapered, which surrounds a part of the cutting section I and forms a circumambient shoulder Il) around the cutting section spaced from the cutting edge 2; a hub II spaced from the portion 9; and two spaced longitudinal uniting elements I2 and I3 uniting the portion 9 and I I. The hub is threaded internally and screwed on to the portion 6 extending from the handle. By means of this threaded engagement, the stop may be adjusted to vary the distance of the shoulder I from the cutting edge 2. A set screw I4 serves to secure the hub I I, when positioned, against relative movement with respect to the handle.
The uniting elements I2 and I3 are of the same length as the uniting elements 4 and 5. Like the uniting elements 4 and 5 they are diametrically opposite and their inner surfaces are cylindrical on a radius substantially equal to the radius of the convexed outer surfaces of the elements 4 and 5. In addition, the elements I2 and I3 are of the same width as the elements 4 and 5.
In Fig. 5 of the drawing a human eye is represented in general form. The eye ball, so called, consists of a sclerotic coat I5 that is extended in front as a transparent coat I6 which constitutes the cornea. A lens I 'I of transparent, elastic substance is behind the cornea, spaced therefrom. Within the space between the cornea and the lens, there is aqueous iluid. Extending over the front of the lens is the iris I8.
The trephine of this invention, described in detail above, is primarily for the purpose of removing a section I9, circular in conguration, from the cornea of the eye. With the recipient in readiness, and the donors eye available, the surgeon, using the trephine, removes one or more sections of the cornea of the donors eye and a similar sized section of the recipients eye. This is accomplished by rotating the trephine forcing the knife edge 2 of the cutting section I of the trephine through the cornea of the donors eye and subsequently through the cornea of the recipients eye. If a complete round section is not obtained, the section is completed by means of specially made scissors. The corneal section so removed from the doncrs eye will exactly it the opening made in the cornea of the recpients eye in which it is placed and therein held by stitches. The shoulder I0 formed by the stop helps to prevent cutting through the cornea a sufficient distance to cut or injure the lens I'I or the iris I8 of the eye.
Due to the hollow construction of the trephine and the fenestration defined by the uniting elements thereof a section of a cornea cut by the trephine is readily removed from the trephine without injury thereto. In addition, the trephine is readily cleaned of particles of any nature and is completely accessible for sterilization. The cylindrical portion 9 of the stop serves to protect the cutting edge of the trephine when the trephine is not in use.
It will be obvious that various changes may be made by those skilled in the art in the details of the trephine illustrated in the drawing and described above within the principle and scope of the invention as expressed in the appended claims.
I claim:
1. A corneal trephine of the kind described comprising in combination a hollow, cylindrical end section having a knife edge, a handle spaced from the hollow end section, an adjustable stop associated with said hollow, cylindrical end section, and means for positioning the stop at different distances from the knife edge.
2. A corneal trephine of the kind described comprising in combination a hollow, cylindrical end section having a knife edge, a handle spaced from the hollow end section, an adustable stop associated with said hollow, cylindrical end section and interengaging means on said stop and said handle for positioning the stop in various positions with respect to knife edge of said hollow end section.
3. A corneal trephine of the kind described comprising in combination a hollow cylindrical end section having a knife edge, a handle secured to the hollow cylindrical end section, and a removable element having a shoulder adjacent the knife edge of the hollow cylindrical section and constituting a stop.
4. A corneal trephine of the kind described comprising in combination a hollow `cylindrical end section having a knife edge, a handle axially spaced from the hollow cylindrical end section, circumferentially spaced uniting elements extending between and uniting the hollow cylindrical end section and the handle, a stop including a cylindrical portion surrounding the hollow cylindrical end section `and forming a circumambient shoulder, a portion united to the handle, andv spaced uniting elements extending between the cylindrical portion and the portion uniting with the handle.
5. A corneal trephine of the kind described comprising in. combination a hollow cylindrical end section having a knife edge... a` hollowcylindrical handle axially spaced from said hollow cylindrical end section, a pair of diametri-cally opposite uniting elements extending between and uniting the hollow cylindrical end section and the handle, a removable stop including a cylindrical portion surrounding the hollow cylindrical end portion and forming a circumambient shoulder spaced from the knife edge thereof, a portion threaded on the handle, and diametrically opposed uniting elements extending from the cylindrical portion of the stop to the portion on the handle, said uniting elements of the stop being of the same width as the first mentioned uniting elements.
6. A surgical instrument for cutting a circular opening in the eyeball comprisingv a tubular knife having at its outer end a circular cutting edge, an elongate carrier on the outer end of which said knife is fixed and having on its opposite end a portion manipulable t'wirlingly t0 rotate saidv knife for cutting into the eyeball, and means on the carrier variably conditionable to limit the maximum depth of such cut.
7. A surgical instrument for cutting a circular opening in the eyeball comprising a tubular knife having at its outer end a circular cutting edge, an elongate carrier on the outer end' of which said knife is fixedA and: having on its opposite end a portion manipulable twirlingly to rotate said knife for cutting into the eyeball, and means on the carrier'variably condltionable to limit the maximum depth of such cut, said means comprising an elongate tubular member sleeved on said carrier.'
8. A surgical instrument for cutting a circular opening in the eyeball comprising a tubular knife having at its outer end a circular cutting edge, an elongate carrier on the outer end of which said knife is fixed and having on its opposite end a portion manipulable twirlingly to rotate `said knife for cutting into' ther eyebalL. means on the carrier variably conditionable, to limit the maximum depth of such cut, said means comprising an elongate tubular member sleeved-on said' carrier, and spirally adjustable thereon.
RICHARD TOWNLEY PATO-N.
No references cited.
US710081A 1946-11-15 1946-11-15 Corneal trephine Expired - Lifetime US2473968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US710081A US2473968A (en) 1946-11-15 1946-11-15 Corneal trephine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US710081A US2473968A (en) 1946-11-15 1946-11-15 Corneal trephine

Publications (1)

Publication Number Publication Date
US2473968A true US2473968A (en) 1949-06-21

Family

ID=24852553

Family Applications (1)

Application Number Title Priority Date Filing Date
US710081A Expired - Lifetime US2473968A (en) 1946-11-15 1946-11-15 Corneal trephine

Country Status (1)

Country Link
US (1) US2473968A (en)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598060A (en) * 1950-01-17 1952-05-27 Vinko V Suglian Surgical trephine
US2838050A (en) * 1956-01-11 1958-06-10 George P Pilling & Son Company Trephine for corneal grafting
US3074407A (en) * 1956-09-17 1963-01-22 Marguerite Barr Moon Eye Res F Surgical devices for keratoplasty and methods thereof
US3358682A (en) * 1965-03-23 1967-12-19 Preston Norman Roy Tubular bandage applicator and cut-off
US3512519A (en) * 1967-10-26 1970-05-19 Robert M Hall Anatomical biopsy sampler
US3561449A (en) * 1968-05-01 1971-02-09 Frank A Bellantoni Cutter tool
US3855996A (en) * 1973-03-01 1974-12-24 Medtronic Inc Contraceptive apparatus and procedure
US4122855A (en) * 1971-12-27 1978-10-31 Jirayr Tezel Cutting tool
DE2811869A1 (en) * 1978-03-17 1979-09-27 Volker Geuder STAIRS FOR KERATOPLASTICS
US4211241A (en) * 1978-03-03 1980-07-08 Kastec Corporation Heart valve sizing gauge
DE3014850A1 (en) * 1979-09-07 1981-04-02 Storz Instrument Co., St. Louis, Mo. UNIVERSAL HANDLE FOR TREPHINES
US4357941A (en) * 1980-09-29 1982-11-09 Golubkov Boris P Instrument for marking out the central optical zone of the cornea
US4473076A (en) * 1982-04-07 1984-09-25 Vxtra Development Limited 700 Division Surgical knife
US4750491A (en) * 1984-11-08 1988-06-14 Allergan, Inc. Trephine and method
US4763651A (en) * 1984-11-08 1988-08-16 Allergan, Inc. Trephine and method
US4821718A (en) * 1987-10-19 1989-04-18 Uldall P Robert Surgical instrument for prosthetic graft removal
DE4004934A1 (en) * 1989-02-20 1990-09-06 Kai R & D Center Co SKIN CUTTING DEVICE
EP0398874A1 (en) * 1987-06-15 1990-11-28 Keravision, Inc. Corneal curvature adjustment ring
US5084059A (en) * 1990-04-04 1992-01-28 Storz Instrument Company Cornea trephine instrument
US5269787A (en) * 1991-12-17 1993-12-14 Cozean Jr Charles H Apparatus and method for capsulorhexis
FR2693368A1 (en) * 1992-07-08 1994-01-14 Chazalon Thierry Surgical cutting instrument for ocular surgery, e.g. keratoplasty - comprises cylindrical sleeve supporting blade unit with extended cutting edge, with intermediate locking ring securing components together
US5873883A (en) * 1996-01-25 1999-02-23 Cozean, Jr.; Charles H. Hydraulic capsulorhexitome
US6051023A (en) * 1987-06-15 2000-04-18 Keravision, Inc. Corneal curvature adjustment ring and apparatus for making a cornea
ES2200623A1 (en) * 2001-02-16 2004-03-01 Univ Miguel Hernandez De Elche Apparatus for the obtaining of eye tissue samples in vertebrate animals. (Machine-translation by Google Translate, not legally binding)
US20040119175A1 (en) * 2002-12-20 2004-06-24 Reed Bryan M. Apparatus and method for manufacturing intraocular lenses
US6966927B1 (en) 1992-08-07 2005-11-22 Addition Technology, Inc. Hybrid intrastromal corneal ring
US20060038308A1 (en) * 2003-06-26 2006-02-23 Reed Bryan M IOL square edge punch and haptic insertion fixture
US20060287663A1 (en) * 2005-06-15 2006-12-21 Gayheart Robert A Corneal excision or scoring device
US20080039950A1 (en) * 2006-08-11 2008-02-14 Howmedica Osteonics Corp. Expanding trial stem for orthopaedic surgery
EP2191799A1 (en) 2008-11-27 2010-06-02 Philip Douglas Weston Trephine with transparent casing
USD819817S1 (en) * 2015-06-18 2018-06-05 Coronet Medical Technologies Limited Corneal trephine
EP3618785A4 (en) * 2017-05-04 2020-06-24 Soosan Jacob Trephine to create shaped cuts for cornea of tissue

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598060A (en) * 1950-01-17 1952-05-27 Vinko V Suglian Surgical trephine
US2838050A (en) * 1956-01-11 1958-06-10 George P Pilling & Son Company Trephine for corneal grafting
US3074407A (en) * 1956-09-17 1963-01-22 Marguerite Barr Moon Eye Res F Surgical devices for keratoplasty and methods thereof
US3358682A (en) * 1965-03-23 1967-12-19 Preston Norman Roy Tubular bandage applicator and cut-off
US3512519A (en) * 1967-10-26 1970-05-19 Robert M Hall Anatomical biopsy sampler
US3561449A (en) * 1968-05-01 1971-02-09 Frank A Bellantoni Cutter tool
US4122855A (en) * 1971-12-27 1978-10-31 Jirayr Tezel Cutting tool
US3855996A (en) * 1973-03-01 1974-12-24 Medtronic Inc Contraceptive apparatus and procedure
US4211241A (en) * 1978-03-03 1980-07-08 Kastec Corporation Heart valve sizing gauge
DE2811869A1 (en) * 1978-03-17 1979-09-27 Volker Geuder STAIRS FOR KERATOPLASTICS
DE3014850A1 (en) * 1979-09-07 1981-04-02 Storz Instrument Co., St. Louis, Mo. UNIVERSAL HANDLE FOR TREPHINES
US4319575A (en) * 1979-09-07 1982-03-16 Storz Instrument Company Universal trephine handle
US4357941A (en) * 1980-09-29 1982-11-09 Golubkov Boris P Instrument for marking out the central optical zone of the cornea
US4473076A (en) * 1982-04-07 1984-09-25 Vxtra Development Limited 700 Division Surgical knife
US4750491A (en) * 1984-11-08 1988-06-14 Allergan, Inc. Trephine and method
US4763651A (en) * 1984-11-08 1988-08-16 Allergan, Inc. Trephine and method
EP0398874A1 (en) * 1987-06-15 1990-11-28 Keravision, Inc. Corneal curvature adjustment ring
EP0398874A4 (en) * 1987-06-15 1991-07-03 Keravision, Inc. Holder for inserting corneal curvature adjustment ring
US6051023A (en) * 1987-06-15 2000-04-18 Keravision, Inc. Corneal curvature adjustment ring and apparatus for making a cornea
US4821718A (en) * 1987-10-19 1989-04-18 Uldall P Robert Surgical instrument for prosthetic graft removal
DE4004934A1 (en) * 1989-02-20 1990-09-06 Kai R & D Center Co SKIN CUTTING DEVICE
US5084059A (en) * 1990-04-04 1992-01-28 Storz Instrument Company Cornea trephine instrument
US5269787A (en) * 1991-12-17 1993-12-14 Cozean Jr Charles H Apparatus and method for capsulorhexis
FR2693368A1 (en) * 1992-07-08 1994-01-14 Chazalon Thierry Surgical cutting instrument for ocular surgery, e.g. keratoplasty - comprises cylindrical sleeve supporting blade unit with extended cutting edge, with intermediate locking ring securing components together
US6966927B1 (en) 1992-08-07 2005-11-22 Addition Technology, Inc. Hybrid intrastromal corneal ring
US5873883A (en) * 1996-01-25 1999-02-23 Cozean, Jr.; Charles H. Hydraulic capsulorhexitome
ES2200623A1 (en) * 2001-02-16 2004-03-01 Univ Miguel Hernandez De Elche Apparatus for the obtaining of eye tissue samples in vertebrate animals. (Machine-translation by Google Translate, not legally binding)
US20040119175A1 (en) * 2002-12-20 2004-06-24 Reed Bryan M. Apparatus and method for manufacturing intraocular lenses
US20060038308A1 (en) * 2003-06-26 2006-02-23 Reed Bryan M IOL square edge punch and haptic insertion fixture
US20060052869A1 (en) * 2003-06-26 2006-03-09 Reed Bryan M IOL square edge punch and haptic insertion fixture
US20060287663A1 (en) * 2005-06-15 2006-12-21 Gayheart Robert A Corneal excision or scoring device
US7744614B2 (en) * 2005-06-15 2010-06-29 Krishna Imports, Incorporated Corneal excision or scoring device
US20080039950A1 (en) * 2006-08-11 2008-02-14 Howmedica Osteonics Corp. Expanding trial stem for orthopaedic surgery
US8216320B2 (en) * 2006-08-11 2012-07-10 Howmedica Osteonics Corp. Expanding trial stem for orthopaedic surgery
US9011549B2 (en) 2006-08-11 2015-04-21 Howmedica Osteonics Corp. Expanding trial stem for orthopaedic surgery
EP2191799A1 (en) 2008-11-27 2010-06-02 Philip Douglas Weston Trephine with transparent casing
US20100152754A1 (en) * 2008-11-27 2010-06-17 Philip Douglas Weston Trephine with transparent casing
US8343177B2 (en) * 2008-11-27 2013-01-01 Philip Douglas Weston Trephine with transparent casing
USD819817S1 (en) * 2015-06-18 2018-06-05 Coronet Medical Technologies Limited Corneal trephine
EP3618785A4 (en) * 2017-05-04 2020-06-24 Soosan Jacob Trephine to create shaped cuts for cornea of tissue

Similar Documents

Publication Publication Date Title
US2473968A (en) Corneal trephine
US4205682A (en) Contact lens corneal cutter
US4642090A (en) Disposable combination scalpel blade and incision irrigator for ophthalmological use
US3884238A (en) Apparatus for intraocular surgery
US4018228A (en) Surgical punch apparatus
US2480737A (en) Cutting instrument particularly useful in connection with corneal grafting
US3645268A (en) Disposable, presterilized, self-locating and piercing evacuator with ejector tube
US4694828A (en) Laser system for intraocular tissue removal
US2409101A (en) Finger or hand attachment
US1794221A (en) Applicator
US9011470B2 (en) Toric axis marker
US20180271704A1 (en) Ophthalmic surgical device for cutting a circular incision
US3020912A (en) Motor driven surgical knife
US2192699A (en) Surgical instrument
US4357941A (en) Instrument for marking out the central optical zone of the cornea
US10667944B2 (en) Ophthalmic intra ocular access tool
US2598060A (en) Surgical trephine
US2803252A (en) Medicinal tweezer
CN102846429B (en) Fixed intelligent corneal trephine
US1089019A (en) Knife.
Wallman et al. Simple devices for restricting the visual fields of birds
US2222388A (en) Paring and coring tool
US1636062A (en) Scalpel
Rencová et al. Reduction in the drusenoid retinal pigment epithelium detachment area in the dry form of age-related macular degeneration 2.5 years after rheohemapheresis.
US20030036769A1 (en) Adenoid curette