The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 1997
Filed:
Jun. 07, 1995
Bruce J Sand, Hidden Hills, CA (US);
Sunrise Technologies, Fremont, CA (US);
Abstract
A method and apparatus for controlled thermal shrinkage of collagen tissue by irradiation with coherent energy in the wavelength band of 1.80 to 2.55 microns as generated by a laser. A specific application to ophthalmological corneal reshaping is described. A method for shrinkage of collagen tissue by application of coherent infrared energy, in which the threshold shrinkage temperature is substantially reduced by application of a reagent such as lysozyme to the tissue prior to heating. The method is especially useful in ophthalmology for shape modification of a cornea, and is enhanced by using a corneal collagen shield as a carrier and delivery agent for the reagent and an admixed anaesthetic.