Methods and systems for laser treatment using non-uniform output beam
First Claim
1. A phototherapeutic system, comprising:
- a laser light source that generates an output beam, andan 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, wherein ratio of peak energy per unit area in regions of relatively high energy per unit area to average energy per unit area in the background region is greater than 4.5 to 1.
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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:YAG 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 target 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).
1312 Citations
17 Claims
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1. A phototherapeutic system, comprising:
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a laser light source that generates 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, wherein ratio of peak energy per unit area in regions of relatively high energy per unit area to average energy per unit area in the background region is greater than 4.5 to 1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification