U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Corneal-shaping electrode

Patent 4326529 Issued on April 27, 1982. Estimated Expiration Date: Icon_subject December 5, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

603815

1108686

1364148

2126070

2347915

2525381

3237623

3307553

Cryomedical device
Patent #: 3948269
Issued on: 04/06/1976
Inventor: Zimmer

Electrotherapeutic treatment head
Patent #: 3978864
Issued on: 09/07/1976
Inventor: Smith, deceased

More ...

Inventors

Assignee

Application

No. 06/100664 filed on 12/05/1979

US Classes:

606/41, Applicators606/34Systems

Examiners

Primary: Michell, Robert W.
Assistant: Kruter, J. L.

Attorney, Agent or Firm

International Classes

A61B 18/04 (20060101)
A61B 18/14 (20060101)
A61B 18/08 (20060101)
A61F 9/007 (20060101)
A61F 9/013 (20060101)
A61B 18/00 (20060101)
A61M 3/02 (20060101)
A61M 3/00 (20060101)

Abstract

The disclosure relates to a circulating saline electrode for changing corneal shape in eyes. The electrode comprises a tubular nonconductive electrode housing having an annular expanded base which has a surface substantially matched to a subject corneal surface. A tubular conductive electrode connected to a radiofrequency generating source is disposed within the electrode housing and longitudinally aligned therewith. The electrode has a generally hemispherical head having at least one orifice. Saline solution is circulated through the apparatus and over the cornea to cool the corneal surface while radiofrequency electric current emitted from the electrode flows therefrom through the cornea to a second electrode, on the rear of the head. This current heats the deep corneal stroma and thereby effects corneal reshaping as a biological response to the heat.

Other References

  • An Electrothermal Technique for the Alteration of Corneal Curvature, U.S. Dept. of Energy, Contract W-7405-Eng. 36, LA-7155-MS, Doss et al., Univ. Cal., Los Alamos, New Mexico 87545, 2/78
  • Thermal Treatment of Cancer Eye, Dept. of Energy, Univ. California, Doss
  • A Technique for the Selective Heating of Corneal Stroma, Doss et al., U.S. Dept. E.R.D.A., Contract W-7405-Eng. 36, U. Cal., Los Alamos, LA-UR78-452
  • "Shrinkage Temperature of Eye Collagen", Stringer et al., Native Wellcome Medical Research Inst., Dunedin, New Zealand
  • "Thermokeratoplasty Temperature Profile", Shaw et al., Investigative Ophthalmology, pp. 181-185, vol. 13, No. 3, Mar. 1974
  • "Alterations in Corneal Morphology Following Thermokeratoplasty", Aquavella, Arch. Ophthalmology-vol. 94, Dec. 1976, pp. 2082-2085
  • "Thermokeratoplasty for Keratoconus", Keates et al., Ophthalmic Surgery, Fall, 1975, vol. 6, No. 3, pp. 89-92
  • Thermokeratoplasty in the Treatment of Keratoconus, Gasset et al., Amer. J. Ophthalmology, Feb. 1975, pp. 226-232
  • `Eye Surgery`, Stallard, The Williams and Wilkins Co., Baltimore, Md, 1973, pp. 703-706
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