METHOD AND APPARATUS FOR SELECTIVE PHOTOTHERMOLYSIS OF VEINS
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Abstract
Exemplary embodiments of the present disclosure provide method and apparatus for providing electromagnetic radiation to a biological tissue that may be selectively absorbed by venous structures as compared to arteries. For example, a wavelength of the electromagnetic radiation can be selected based on absorptivity of the radiation by oxygenated hemoglobin, deoxygenated hemoglobin, and/or met-hemoglobin. The wavelength can be, e.g., between about 685 nm and about 705 nm, or between about 690 nm and about 700 nm, or about 694 nm. The exemplary methods and apparatus can be used, e.g., for photothermolysis treatment of venous structures such as port wine stains or varicose veins, while reducing or avoiding undesirable damage to nearby arteries in the irradiated tissue.
33 Citations
52 Claims
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1-32. -32. (canceled)
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33. A method for treating at least one venous structure, comprising:
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providing a particular electromagnetic radiation to a tissue region containing the at least one venous structure, wherein the particular radiation has at least one property which effects the particular radiation to be more effectively absorbed by the at least one venous structure than by an artery present in the tissue region, and wherein the particular radiation has a wavelength between about 685 nm and about 705 nm. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. An apparatus for treating at least one venous structure, comprising:
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a radiation source configured to provide a particular electromagnetic radiation to a biological tissue containing the at least one venous structure, wherein the particular radiation has at least one property which effects the particular radiation to be more effectively absorbed by the at least one venous structure than by an artery present in the tissue region, and wherein the particular radiation has a wavelength between about 685 nm and about 705 nm. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification