US2881500A - Corneal clamp - Google Patents

Corneal clamp Download PDF

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Publication number
US2881500A
US2881500A US74657358A US2881500A US 2881500 A US2881500 A US 2881500A US 74657358 A US74657358 A US 74657358A US 2881500 A US2881500 A US 2881500A
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Prior art keywords
cornea
clamp
corneal
aperture
corneas
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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
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Charles W Furness
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Charles W Furness
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    • 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
    • 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
    • A61F2/0095Packages or dispensers for prostheses or other implants
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N1/00Preservation of bodies of humans or animals, or parts thereof
    • A01N1/02Preservation of living parts
    • A01N1/0236Mechanical aspects
    • A01N1/0263Non-refrigerated containers specially adapted for transporting or storing living parts whilst preserving, e.g. cool boxes, blood bags or "straws" for cryopreservation
    • 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
    • A61F2/142Cornea, e.g. artificial corneae, keratoprostheses or corneal implants for repair of defective corneal tissue
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/44Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44641Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member
    • Y10T24/44744Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member with position locking-means for engaging faces

Description

Aprll 14, 1959 c. w. FURNESS CORNEAL CLAMP Filed July 3, 1958 IN VEN TOR. 4. Pam 55 AWE/767.5

United rates Patent 2,ss1,s00

CORNEAL CLAMP Charles W. Furness, Silver Spring, Md., assignor to the United States of America as represented by the Secretary of the Army Application July 3, 1958, Serial No. 746,573

1 Claim. (Cl. 24-243) (Granted under Title 35, U. S. Code (1952), sec. 266) The invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment of any royalty thereon.

The present invention relates to a clamp for holding corneas which are preserved by dehydration for future use.

The new system used to preserve corneas by dehydration has brought about one of the greatest advances in ophthalmology since the fresh corneal transplant first took place. Now it is possible to store corneas indefinitely and stockpile them for future use. However, when some of the corneas that have been preserved are removed from their storage containers there is a wrinkling on the corneal surface. During the dehydration process, the corneas sometimes roll up or fold with two or more creases, such as a piece of paper would have after having been folded. When the corneas that do not roll up or fold are rehydrated, they have a smooth epithelium surface; whereas, the ones that fold have a ridge where the fold occurred. This ridge makes it very difficult to remove a lamellar graft from the cornea and keep the graft the same thickness throughout.

An object of the present invention is to hold the cornea in its original shape and curve, thereby preventing the cornea from rolling up or folding during the dehydration process.

Another object is to provide for the draining of the moisture from the endothelium side of the cornea during the dehydration process while the cornea is being held in the clamp.

A further object is to provide a clamp of simple and inexpensive construction easily and conveniently operated.

Further objects and a more complete understanding of the invention may be obtained by referring to the following description and claim taken in conjunction with the accompanying drawings which show an illustrative embodiment of the construction forming the basis of the invention and in which- Fig. 1 shows a top view of the clamp in an open position;

Fig. 2 shows a top view of the clamp folded so that the left end is immediately above and centered over the right end;

Fig. 3 is an elevational view of Fig. 2 partly in section; and

Fig. 4 is an elevational view partly in section of the device in its clamped position. I

Referring to Figs. 1, 2, and 3, the clamp is formed from a single strip of materialvl having a supporting end 2 and securing end 3. Supporting end 2 has perforated portion 4 curved upwardly and formed in curvature to give natural support to the cornea to be preserved. Securing end 3 has a circular aperture 5 and beveled surface 6. The diameter of aperture 5 is slightly less than that of the cornea to be preserved, and the angle of the "ice 2 beveled surface 6 conforms to that of the surface of perforated portion 4 with which it cooperates in holding the cornea when in the clamped position (Fig. 4). Holes 7 are of slightly smaller diameter than screw 8. Screw 8 (Fig. 4) cuts its own threads in the sides of holes 7 and is used in holding the device in the clamped position.

The device operates and is used as follows: Strip 1 is folded over so that securing end 3 is centered above supporting end 2. After the cornea which is to be preserved is removed from the eye, it is placed on perforated portion 4, securing end 2 is lowered so that the cornea projects through aperture 5, and beveled surface 6 fits around the cornea on perforated portion 4. Screw 8 is inserted and adjusted to hold the cornea firmly but not too tightly. Perforated portion 4 permits the moisture from the endothelium side of the cornea to escape during the dehydration process. The clamp with the cornea in position is placed in a container with glycerin, dehydrated, and retained in the container for future use. When the cornea is needed for a transplant, the container which houses the dehydrated cornea and clamp is opened, and the clamp with the cornea in position is removed from the container. The clamp with the cornea is placed in an antibiotic solution and the cornea is rehydrated. The lamellar graft is removed from the cornea by the surgeon while an assistant holds the clamp with the cornea in position.

In one embodiment of the invention, a model was made of sheet plastic material 1.5 mm. thick with pettinent dimensions as follows: Length, mm.; diameter of supporting end 2, 18 mm.; perforated portion 4, 10 perforations, each 2 mm. in diameter equally spaced; perforated portion 4 of spherical curvature with a 6.7 mm. radius; aperture 5 of circular configuration with a diameter of 10 mm.; screw 8, stainless steel, 4-40 X Although this model is suitable for an adult human cornea, the dimensions may be varied for use with corneas of children and animals; and if the clamp is used for holding fragile material other than corneas, both the configuration of the perforated portion and the securing end and the dimensions may be varied to accommodate the object desired to be held or supported.

I claim:

A clamp for holding a cornea comprising a strip of material having adjacent one end a raised portion of uniform curvature projecting in a direction normal to the plane of the strip and of circular configuration in hori zontal section and adjacent the other end a circular aperture, said strip of material folded over at a point between the ends thereof so that said aperture is immediately above and centered over said raised portion, said raised portion having a plurality of perforations and said aperture having a beveled edge around its perimeter to conform to the curvature of said raised portion, and means for adjusting the degree of protrusion of said raised portion through said aperture, whereby a cornea is given support by said raised portion when placed thereon and is held in position thereon by the beveled edge around the perimeter of said aperture, said perforations in said raised portion permitting flow of liquid from the cornea.

References Cited in the file of this patent UNITED STATES PATENTS 468,341 Harris Feb. 9, 1892 963,085 Smith July 5, 1910 2,420,142 Levin May 6, 1947 FOREIGN PATENTS 85,410 Germany Feb. 13, 1896

US2881500A 1958-07-03 1958-07-03 Corneal clamp Expired - Lifetime US2881500A (en)

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Application Number Priority Date Filing Date Title
US2881500A US2881500A (en) 1958-07-03 1958-07-03 Corneal clamp

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Application Number Priority Date Filing Date Title
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US2881500A true US2881500A (en) 1959-04-14

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809094A (en) * 1969-12-24 1974-05-07 G Cook Tongue extender
US4077411A (en) * 1975-04-18 1978-03-07 Ward Donald E Keratoplasty device
US4824066A (en) * 1983-04-11 1989-04-25 Smith S Gregory Apparatus for aiding in the storing and preserving of donor corneas
US20030018348A1 (en) * 2001-07-23 2003-01-23 Ioannis Pallikaris Device for separating the epithelium layer from the surface of the cornea of an eye
WO2003009789A1 (en) * 2001-07-23 2003-02-06 Fos Holding S.A. Device for separating the epithelium layer from the surface of the cornea of an eye
US20040260321A1 (en) * 2002-12-19 2004-12-23 Ming-Kok Tai Apparatus and method for separating the epithelium layer from the cornea of an eye without corneal pre-applanation
US20040260320A1 (en) * 2002-12-10 2004-12-23 Lisk James R. Disposable separator for separating the epithelium layer from the cornea of an eye
US20050055041A1 (en) * 2003-09-05 2005-03-10 Sightrate B.V. Device for separation of corneal epithelium
US20070265650A1 (en) * 2001-07-23 2007-11-15 Ioannis Pallikaris Device for separating the epithelial layer from the surface of the cornea of an eye
US20110289733A1 (en) * 2010-05-25 2011-12-01 Playtex Products, Llc. Teether/pacifier securing device
US20130190794A1 (en) * 2010-07-14 2013-07-25 The University Of Queensland Patch applying apparatus
US9220678B2 (en) 2007-12-24 2015-12-29 The University Of Queensland Coating method
US9283365B2 (en) 2008-02-07 2016-03-15 The University Of Queensland Patch production
US9387000B2 (en) 2008-05-23 2016-07-12 The University Of Queensland Analyte detection using a needle projection patch
US9572969B2 (en) 2004-01-30 2017-02-21 The University Of Queensland Delivery device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE85410C (en) *
US468341A (en) * 1892-02-09 Walter h
US963085A (en) * 1909-12-01 1910-07-05 Ralph A Smith Darning device.
US2420142A (en) * 1944-08-05 1947-05-06 Levin David Fruit squeezer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE85410C (en) *
US468341A (en) * 1892-02-09 Walter h
US963085A (en) * 1909-12-01 1910-07-05 Ralph A Smith Darning device.
US2420142A (en) * 1944-08-05 1947-05-06 Levin David Fruit squeezer

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809094A (en) * 1969-12-24 1974-05-07 G Cook Tongue extender
US4077411A (en) * 1975-04-18 1978-03-07 Ward Donald E Keratoplasty device
US4824066A (en) * 1983-04-11 1989-04-25 Smith S Gregory Apparatus for aiding in the storing and preserving of donor corneas
US7004953B2 (en) 2001-07-23 2006-02-28 Fos Holding S.A. Device for separating the epithelium layer from the surface of the cornea of an eye
US20030018348A1 (en) * 2001-07-23 2003-01-23 Ioannis Pallikaris Device for separating the epithelium layer from the surface of the cornea of an eye
WO2003009789A1 (en) * 2001-07-23 2003-02-06 Fos Holding S.A. Device for separating the epithelium layer from the surface of the cornea of an eye
US20040167555A1 (en) * 2001-07-23 2004-08-26 Fos Holding S.A. Device for separating the epithelium layer from the surface of the cornea of an eye
US20040220599A1 (en) * 2001-07-23 2004-11-04 Fos Holding S.A. Device for separating the epithelium layer from the surface of the cornea of an eye
US7708750B2 (en) 2001-07-23 2010-05-04 Fos Holdings S.A. Device for separating the epithelium layer from the surface of the cornea of an eye
US20070265650A1 (en) * 2001-07-23 2007-11-15 Ioannis Pallikaris Device for separating the epithelial layer from the surface of the cornea of an eye
US20030018347A1 (en) * 2001-07-23 2003-01-23 Ioannis Pallikaris Device for separating the epithelium layer from the surface of the cornea of an eye
US7156859B2 (en) 2001-07-23 2007-01-02 Fos Holding S.A. Device for separating the epithelium layer from the surface of the cornea of an eye
US20040260320A1 (en) * 2002-12-10 2004-12-23 Lisk James R. Disposable separator for separating the epithelium layer from the cornea of an eye
US20040260321A1 (en) * 2002-12-19 2004-12-23 Ming-Kok Tai Apparatus and method for separating the epithelium layer from the cornea of an eye without corneal pre-applanation
US20050055041A1 (en) * 2003-09-05 2005-03-10 Sightrate B.V. Device for separation of corneal epithelium
US9888932B2 (en) 2004-01-30 2018-02-13 Vaxxas Pty Limited Method of delivering material or stimulus to a biological subject
US9572969B2 (en) 2004-01-30 2017-02-21 The University Of Queensland Delivery device
US9220678B2 (en) 2007-12-24 2015-12-29 The University Of Queensland Coating method
US10022322B2 (en) 2007-12-24 2018-07-17 Vaxxas Pty Limited Coating method
US9283365B2 (en) 2008-02-07 2016-03-15 The University Of Queensland Patch production
US9387000B2 (en) 2008-05-23 2016-07-12 The University Of Queensland Analyte detection using a needle projection patch
US20110289733A1 (en) * 2010-05-25 2011-12-01 Playtex Products, Llc. Teether/pacifier securing device
US20130190794A1 (en) * 2010-07-14 2013-07-25 The University Of Queensland Patch applying apparatus
US9943673B2 (en) * 2010-07-14 2018-04-17 Vaxxas Pty Limited Patch applying apparatus

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