Method and apparatus for adjusting corneal curvature using a sol

Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Eye prosthesis – Corneal implant

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

606166, 606167, A61F 214, A61F 900

Patent

active

058556044

ABSTRACT:
A method and apparatus for adjusting corneal curvature of the eye comprising an adjustable split device formed of a flexible hollow shell which is implantable into the cornea in encircling relation to the central optic zone of the cornea. The implant is filled by a predetermined amount with a select quantity of solid biocompatible material in various forms such as rings or strands and composed of flexible polymeric materials of various shape and length. The biocompatible filler material is strategically located within the flexible shell to alter its dimensions in thickness or diameter and thereby adjust the corneal curvature to correct for refractive error. Further adjustment of the implant may be made post-operatively after implantation by select removal of the biocompatible filler material, shifting of the material, or addition of new material to the device.

REFERENCES:
patent: 4298004 (1981-11-01), Schachar et al.
patent: 4452235 (1984-06-01), Reynolds
patent: 4607617 (1986-08-01), Choyce
patent: 4624669 (1986-11-01), Grendahl
patent: 4655774 (1987-04-01), Choyce
patent: 4688570 (1987-08-01), Kramer et al.
patent: 4815463 (1989-03-01), Hanna
patent: 4834750 (1989-05-01), Gupta
patent: 4941093 (1990-07-01), Marshall et al.
patent: 4961744 (1990-10-01), Kilmer et al.
patent: 4976719 (1990-12-01), Siepser
patent: 5090955 (1992-02-01), Simon
patent: 5123921 (1992-06-01), Werblin et al.
patent: 5188125 (1993-02-01), Kilmer et al.
patent: 5236970 (1993-08-01), Christ et al.
patent: 5300118 (1994-04-01), Silvestrini et al.
patent: 5312424 (1994-05-01), Kilmer et al.
patent: 5318047 (1994-06-01), Davenport et al.
patent: 5331073 (1994-07-01), Weinschenk, III et al.
patent: 5391201 (1995-02-01), Barrett et al.
patent: 5405384 (1995-04-01), Silvestrini
patent: 5466260 (1995-11-01), Silvestrini et al.
patent: 5480950 (1996-01-01), Wang et al.
patent: 5505722 (1996-04-01), Kilmer et al.
patent: 5547468 (1996-08-01), Simon et al.
"Refractive Surgery," by Dimitri T. Azar, M.D., pp. 1-2, Corneal Biomechanics in Refractive Surgery, by Jesper O. Hjortdal, Chap. 15, pp. 197-208, The Intrastromal Corneal Ring for the Correction of Myopia, by Steven M. Verify & David J. Schanzlin, Chap. 27, pp. 365-372, Intracorneal Alloplastic Inclusions, by Johnny M. Khoury, et al., Chap. 28, pp. 373-384, Appleton & Lange, Stamford, Connecticut. Copyright 1997.
"Principles and Practice of Refractive Surgery," by Richard Elander, M.D., et al., pp. 1-3, Alloplastic Materials in Lamellar Surgery, by Bernard E. McCarey, pp. 261-276, Synthetic Epikeratoplasty, by Keith P. Thompson, et al., Chap. 39, pp. 405-413, Intrastromal Corneal Ring, by David J. Schanzlin, et al., Chap. 40, pp. 415-419, W. B. Saunders Company, Philadelphia, Pennsylvania. Copyright 1997.
Abstract entitled: "Results of a 2-year animal experiment with reticulated polyethylene oxide intrastromal rings," by F. Kuhne, et al., Journal of Fr. Ophthalmology, vol. 17, 1994.2.
Abstract entitled: "Refractive Modeling of the Corneal by Intrastromal Rings," by Gabriel Simon, et al., Association of Research in Vision and Ophthalmology, Annula Spring Meeting, Sarasota, Forida, Apr. 30-May 5, 1989, p. 187.
"Effects of Intrastromal Corneal Ring Size and Thickness on Corneal Flattening in Human Eye," by Terry E. Burris, et al., Refractive & Corneal Surgery, vol. 7 Jan./Feb. 1991, pp. 46-50.
"Hydration Stability of Intracorneal Hydrogel Implants," by W. Houdijin Beekhuis, et al., Investigative Ophthalmology & Visual Science/Nov. 1985, vol. 26, pp. 1634-1636.
"Complications of Hydrogel Intracorneal Lenses in Monkeys," by W. Houdijin Beekhuis, MD, et al. Arch Ophthalmol, vol. 105, Jan. 1987, pp. 116-122.
"Hydrogel keratophakia: a microkeratome dissection in the monkey model," by W. Houdijn Beekhuis, et al., British Journal of Ophthalmology, 1986, 70, 192-198.
"The Intrastromal Corneal Ring: Two Cases in Rabbits," by Joseph, F. Fleming, MD., et al., Journal of Refractive Surgery, Nov./Dec. 1987; vol. 3, No. 6, pp. 227-232.
"Effect of Diameter and Depth on the Response to Solid Polysulfone Intracorneal Lenses in Cats," by Harold Climenhaga MD., et al., Arch Ophthalmol, vol. 106, Jun. 1988, pp. 818-824.
"Flattening of central corneal curvature with Intrastromal Corneal Rings of increasing thickness: An eye-bank eye study," by Terry E. Burris, et al., J. Cataract Refractive Surgery, vol. 19, Supplement 1993, pp. 182-187.
"Refractive Keratoplasty in Monkeys Using Intracorneal Lenses of Various Refractive Lenses," by Bernard E. McCarey, PhD, et al., Arch Ophthalmol, vol. 105, Jan. 1987, pp. 123-126.
Refractive keratoplasty with intrastromal hydrogel lenticular implants, by Bernard E. McCarey, et al., Investigative Ophthalmology Visual Science, Jul. 1981, vol. 21, No.1, Part 1, pp. 107-115. Copyright 1981.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for adjusting corneal curvature using a sol does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for adjusting corneal curvature using a sol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for adjusting corneal curvature using a sol will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-857894

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.