METHODS AND SYSTEMS FOR LASER TREATMENT USING NON-UNIFORM OUTPUT BEAM
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Accused Products
Abstract
Disclosed herein are methods and systems for treatment, such as skin rejuvenation treatment, use non-uniform laser radiation. A high-intensity portion of the laser radiation causes collagen destruction and shrinkage within select portions of the treatment area, while a lower-intensity portion of the radiation causes fibroblast stimulation leading to collagen production across other portions of the treatment area. An output beam from a laser source, such as an Nd:NAG laser, is coupled into an optical system that modifies the beam to provide a large-diameter beam having a nonuniform energy profile, comprised of a plurality of high-intensity zones surrounded by lower-intensity zones within the treatment beam. The higher-intensity zones heat select portions of the tar et tissue to temperatures sufficient for a first treatment (e.g. collagen shrinkage), while the lower-intensity zones provide sufficient energy for a second treatment (e.g. stimulated collagen production).
13 Citations
87 Claims
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1-47. -47. (canceled)
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48. A phototherapeutic system, comprising:
an array of at least two laser light sources each laser light source generating an output beam; and
an optical system that modifies the output beam to provide a treatment beam having a non-uniform energy profile, said non-uniform energy profile being comprised of a plurality of regions of relatively high energy per unit area dispersed within a background region of relatively low energy per unit area.- View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65)
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66. A method for treating human tissue, comprising:
- generating an output beam from two or more laser light sources;
coupling the output beam into an optical system that modifies the beam to provide a treatment beam having a non-uniform energy profile, said non-uniform energy profile being comprised of regions of relatively high energy per unit area within a background region of relatively low energy per unit area in comparison to the regions of relatively high energy per unit area; and
directing the treatment beam to a target tissue such that the regions of relatively high energy per unit area of the treatment beam illuminate portions of the target tissue and deliver sufficient energy to such portions of the target tissue to heat such portions of the target tissue to a first temperature T1, and wherein the substantially uniform background region of relatively low energy per unit area of the treatment beam illuminates the remaining portion of the target tissue and delivers sufficient energy to such remaining portion of the target tissue to heat the remaining portion of the target tissue to a second temperature T2, wherein T2 is less than T1. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87)
- generating an output beam from two or more laser light sources;
Specification