WO2015054003A1 - Lentille de contact pour chirurgie vitréo-rétinienne - Google Patents

Lentille de contact pour chirurgie vitréo-rétinienne Download PDF

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Publication number
WO2015054003A1
WO2015054003A1 PCT/US2014/058622 US2014058622W WO2015054003A1 WO 2015054003 A1 WO2015054003 A1 WO 2015054003A1 US 2014058622 W US2014058622 W US 2014058622W WO 2015054003 A1 WO2015054003 A1 WO 2015054003A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
flange
eye
contact lens
flexible material
Prior art date
Application number
PCT/US2014/058622
Other languages
English (en)
Inventor
Tarek Shawky HASSAN
K. Peter Luloh
Michael Annen
Original Assignee
Insight Instruments, Inc.
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
Priority claimed from US14/248,850 external-priority patent/US9339184B2/en
Application filed by Insight Instruments, Inc. filed Critical Insight Instruments, Inc.
Publication of WO2015054003A1 publication Critical patent/WO2015054003A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/117—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
    • 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
    • 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

Definitions

  • the present invention relates to a contact lens for use in vitreoretinal surgery, sometimes referred to as vitrectomy lens, and more particularly, to method and structure for maintaining contact lens position on an eye during surgery.
  • Vitreoretinal surgery is generally performed by a surgeon using an ophthalmic microscope to peer into the eye. Because of the optics of the eye itself, it is difficult to focus the microscope onto parts of the eye that are toward the rear portion. For this reason, surgeons typical employ a separate lens that can be placed directly on the eyeball and allow focusing to be extended to the retina and other areas in the back of the eyeball. However, the lens placed on the eyeball floats on a thin layer of fluid and tends to slide about the surface of the eye.
  • One method that has been used to overcome this sliding displacement and hold the lens in place has been for an assistant to constantly monitor the lens position and using a rod or other extension to push the lens back to a desired location. Such assistant need be experienced in vitreoretinal surgery in order to perform this task.
  • U.S. Patent No. 5,963,301 One method that has been developed for overcoming the problem of lens movement is disclosed in U.S. Patent No. 5,963,301.
  • the lens is constructed with a flange that is shaped to conform to the general curvature of an average eye. Accordingly, the flange generally will not seat in a sealing arrangement on the surface of the eye without being pressed down.
  • the flange is large enough to extend over the sclera of the eye and has a fixed radius of curvature that is substantially flatter than the curvature of contact surface of the lens so that the lens device tends to be stabilized and centered over the cornea of the eye.
  • the flange is formed with a number of peripheral opening or recesses that are sized to accommodate various types of instruments that may need to be inserted into the eye during surgery.
  • the flange may also be formed with fittings to which a vacuum may be applied in order to pull the flange into contact with the eye by creating a vacuum between the flange and eye to better hold the lens device in position,
  • Fig. 1 is a perspective view of one form of contact lens 10 used in vitreoretinal surgery.
  • the lens 10 has curved shaped surfaces on both faces 14, 16 with at least one face being shaped to fit an average curvature of the cornea of a human eye.
  • the lens 10 has a vertical sidewall 18 having a height in the range of about 3.5mm.
  • the diameter of the lens is in the range of about 12 mm.
  • This form of lens 10 is used when it is desired to provide a wide field of view in the posterior of the eye such as is needed for viewing the posterior fundus and central vitreous.
  • Other shapes of the lens could be used for different viewing requirements although the surface that is in contact with the eye is dictated by the general shape of the eye.
  • FIG. 2 A cross-sectional view of a slightly different form of the lens 10 is shown in Fig. 2. The only difference is in the addition of a circumscribing flange 12 which is curved to fit the average curvature of an eye. This view better illustrate the upper concave surface 14 and the lower concave surface 16. The centerline is indicated at "x" about which the lens is symmetrical.
  • Fig. 3 is a perspective view of the lens 10 of Fig. 1 with the invent ve flange 20 positioned about the lens.
  • the flange 20 is preferrably formed of a soft, sponge-like material that is highly absorbent.
  • One such material is marketed by De Royal Medical Products, a division of DeRoyal Industries, Inc.. under their product No. 25-201 as an instrument wipe made from polyvinyl alcohol.
  • the flange 20 may be cut to shape to fit about the lens 10 with a central aperture that is slightly smaller than the lens to create a stretch fit with the lens.
  • the central aperture may be scissor cut to form the aperture smaller than the lens diameter so that the edges of the flange around the aperture rest on the outer periphery of the contact lens.
  • the flange extends radially outward about 3 mm.
  • Fig, 4 is a cross-sectional view illustrating the lens 10 of Fig. 2 with the flange 20 attached by means of a separate attachment ring 22,
  • the material of the flange 20 may be adhesively bonded to the attachment ring 22.
  • the ring 22 may be formed of an elastic material of various types that are capable of being sterilized, such as, for example, a vinyl material.
  • Figs, 5, 6 and 7 show alternate forms of the outer flange 20, identified as flange 30, 32 and 34 in the respective figures, in which the flange has been created with a defined shape.
  • the flange may be formed by a stamping operation using a cutting die to cut the flange from a sheet of the absorbent material.
  • the flange 30 has three extending legs 36 that create a large surface area to increase the weight of the flange when wetted so as to assist in holding the lens 10 in position on an eyeball.
  • Figs. 6 and 7 differ from Fig. 5 in having four legs 38 and 40, respectively.
  • the legs 38 are symmetrically positioned about the flange 32 while in Fig. 7, the legs 40 are asymmetric about the flange 34.
  • the flanges 30, 32 and 34 may be joined to the lens 10 using an intermediate attachment ring such as that shown at 22 in Fig. 4.
  • the central opening 42 in each flange 30, 32 and 34 may be sized such that the wetted material of the flange can be stretched about the lens 10 and held in place by friction between the material and lens.
  • the lens 10 is mated with the flange 20 and the combination is then placed on the wetted eye of a patient. Additional wetting compound, such as a sterile saline solution, is then dripped or sprayed onto the flange 20 until the flange is generally saturated. The lens can then be moved as necessary for viewing and the wetted flange will hold the lens into the desired position.
  • Additional wetting compound such as a sterile saline solution
  • Applicant believes that the mere weight of the wetted flange 20 creates sufficient force to hold the lens 10 in a fixed position. However, it is also recognized that the material of the flange, due to its soft and flexible texture and its intimate contact with the eye surface, may create some degree of adhesion, perhaps just from friction between the flange material and the eye surface.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Materials For Medical Uses (AREA)

Abstract

La présente invention concerne un ensemble lentille de contact et a une lentille centrale et une bride périphérique, la lentille ayant une surface de contact oculaire généralement formée à un rayon de courbure de la cornée d'un œil. La bride comprend un matériau souple et stérile, absorbant le liquide comme une éponge et ayant une ouverture centrale qui s'ajuste étroitement autour d'une circonférence de la lentille et s'étendant radialement vers l'extérieur à partir de là. La bride peut inclure un anneau de fixation intérieur pour la fixation à la circonférence extérieure de la lentille de contact centrale.
PCT/US2014/058622 2013-10-09 2014-10-01 Lentille de contact pour chirurgie vitréo-rétinienne WO2015054003A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201361888708P 2013-10-09 2013-10-09
US61/888,708 2013-10-09
US14/248,850 US9339184B2 (en) 2013-04-10 2014-04-09 Contact lens for vitreoretinal surgery
US14/248,850 2014-04-09

Publications (1)

Publication Number Publication Date
WO2015054003A1 true WO2015054003A1 (fr) 2015-04-16

Family

ID=52813513

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/058622 WO2015054003A1 (fr) 2013-10-09 2014-10-01 Lentille de contact pour chirurgie vitréo-rétinienne

Country Status (1)

Country Link
WO (1) WO2015054003A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3962505A (en) * 1974-10-18 1976-06-08 Avery Theodore P Plastic contact lens with magnetic embedded metal ring
US5963301A (en) * 1997-10-22 1999-10-05 Volk Optical, Inc. Lense arrangement for vitreoretinal surgery
US6797003B1 (en) * 1987-08-24 2004-09-28 Pharmacia & Upjohn Company Aspheric soft lens
US20120089073A1 (en) * 2010-10-12 2012-04-12 Cunningham Jr Emmett T Glaucoma drainage device and uses thereof
US20120099077A1 (en) * 2010-10-26 2012-04-26 Abt Niels A Ophthalmoscopic contact lens
US20140307229A1 (en) * 2013-04-10 2014-10-16 Insight Insruments, Inc. Contact Lens For Vitreoretinal Surgery

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3962505A (en) * 1974-10-18 1976-06-08 Avery Theodore P Plastic contact lens with magnetic embedded metal ring
US6797003B1 (en) * 1987-08-24 2004-09-28 Pharmacia & Upjohn Company Aspheric soft lens
US5963301A (en) * 1997-10-22 1999-10-05 Volk Optical, Inc. Lense arrangement for vitreoretinal surgery
US20120089073A1 (en) * 2010-10-12 2012-04-12 Cunningham Jr Emmett T Glaucoma drainage device and uses thereof
US20120099077A1 (en) * 2010-10-26 2012-04-26 Abt Niels A Ophthalmoscopic contact lens
US20140307229A1 (en) * 2013-04-10 2014-10-16 Insight Insruments, Inc. Contact Lens For Vitreoretinal Surgery

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