Band transducer ultrasound therapy
First Claim
1. A method of reducing variance in focal gain in a planar band treatment area for heating tissue with a cylindrically focused ultrasound transducer, comprising:
- applying a current from a power source to a cylindrical transduction element to form a linear focal zone at a focal depth,moving the cylindrical transduction element with a motion mechanism along a linear path perpendicular to the linear focal zone to produce a planar band treatment area, andreducing a variance in focal gain at the linear focal zone at the focal depth by applying an electrical signal to a portion of the cylindrical transduction element, the cylindrical transduction element comprising a first surface, a second surface, a plurality of coated regions, and an uncoated region,wherein the plurality of coated regions comprises an electrical conductor,wherein the first surface comprises at least one coated region of the plurality of the coated regions,wherein the second surface comprises the uncoated region and a subset of the plurality of coated regions,wherein the subset of the plurality of coated regions on the second surface cover at least 60% of the second surface,wherein the subset of the plurality of coated regions on the second surface comprise a lateral edge, a medial edge, a first side edge, and a second side edge, and the portion of the cylindrical transduction element comprises the subset of the plurality of coated regions,wherein the applying the signal to the subset of the plurality of coated regions directs uniform ultrasound energy with a reduced focal gain to the linear focal zone at the focal depth.
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Accused Products
Abstract
Embodiments of a dermatological cosmetic treatment and/or imaging system and method can include use of transducer to create a linear thermal treatment zone at a focal depth to form a band shaped treatment area. The system can include one or more ultrasound transducers, a cylindrical transduction element, an imaging element, a hand wand, a removable transducer module, a control module, and/or graphical user interface. In some embodiments, a coated transducer may be used to provide more consistent treatment in cosmetic procedures, including brow lifts, fat reduction, sweat reduction, and treatment of the décolletage. Skin tightening, lifting and amelioration of wrinkles and stretch marks are provided. Treatment may include heating of tissue for a duration to deactivate a percentage of cells in the treatment region.
1124 Citations
20 Claims
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1. A method of reducing variance in focal gain in a planar band treatment area for heating tissue with a cylindrically focused ultrasound transducer, comprising:
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applying a current from a power source to a cylindrical transduction element to form a linear focal zone at a focal depth, moving the cylindrical transduction element with a motion mechanism along a linear path perpendicular to the linear focal zone to produce a planar band treatment area, and reducing a variance in focal gain at the linear focal zone at the focal depth by applying an electrical signal to a portion of the cylindrical transduction element, the cylindrical transduction element comprising a first surface, a second surface, a plurality of coated regions, and an uncoated region, wherein the plurality of coated regions comprises an electrical conductor, wherein the first surface comprises at least one coated region of the plurality of the coated regions, wherein the second surface comprises the uncoated region and a subset of the plurality of coated regions, wherein the subset of the plurality of coated regions on the second surface cover at least 60% of the second surface, wherein the subset of the plurality of coated regions on the second surface comprise a lateral edge, a medial edge, a first side edge, and a second side edge, and the portion of the cylindrical transduction element comprises the subset of the plurality of coated regions, wherein the applying the signal to the subset of the plurality of coated regions directs uniform ultrasound energy with a reduced focal gain to the linear focal zone at the focal depth. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of reducing variance in focal gain in a planar band treatment area for heating tissue with a cylindrically focused ultrasound transducer, comprising:
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using a cylindrical transduction element to reduce edge noise at a linear focal zone at a focal depth by reducing a variance in a focal gain in a range of 0.01-10 by driving the cylindrical transduction element with a power source for applying ultrasonic energy to the linear focal zone at the focal depth, wherein the driving the cylindrical transduction element comprises applying an electric signal from the power source to a plurality of electrically conductive coated regions on the cylindrical transduction element, and moving the cylindrical transduction element with a motion mechanism along a linear path perpendicular to the linear focal zone to produce a uniform, planar heating area. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method of reducing variance in focal gain in a planar band treatment area for heating tissue with a cylindrically focused ultrasound transducer, comprising:
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using a cylindrical transduction element to reduce edge noise at a linear focal zone at a focal depth with the cylindrical transduction element by reducing a variance of an intensity around the focal depth to 5 mm or less by driving the cylindrical transduction element with a power source for applying ultrasonic energy to the linear focal zone at the focal depth, wherein the driving the cylindrical transduction element comprises applying an electric signal from the power source to a plurality of coated regions on the cylindrical transduction element, and moving the cylindrical transduction element with a motion mechanism along a linear path perpendicular to the linear focal zone to produce a uniform, planar heating area. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification