Reduction of pain through lower fluence rates and longer treatment times
AssigneeCandela Corporation
InventorsKevin Schomacker, James C. Hsia
Life of this patent
Estimating the term…
Abstract
A method of treating a subcutaneous fat region is provided. The method includes generating electromagnetic radiation having a wavelength of about 1,200 nm to about 1,230 nm and delivering an average power density of less than or equal to about 2.3 W/cm2 of the electromagnetic radiation to the subcutaneous fat region for at least 300 seconds. The method also includes cooling an epidermal region and at least a portion of a dermal region overlying the subcutaneous fat region for at least a portion of the at least 300 seconds. The method further includes causing necrosis of at least one fat cell in the subcutaneous fat region.
Claims15
A method of treating a subcutaneous fat region, comprising:
- generating electromagnetic radiation having a non-fat selective wavelength;
- delivering the electromagnetic radiation to the subcutaneous fat region for at least 300 seconds;
- cooling an epidermal region and at least a portion of a dermal region overlying the subcutaneous fat region for at least a portion of the at least 300 seconds;
- causing necrosis of at least one fat cell in the subcutaneous fat region;
- and
- adjusting an average power density based on a thickness of skin overlying the subcutaneous fat region,
- wherein delivering the electromagnetic radiation to the subcutaneous fat region comprises delivering the electromagnetic radiation in three consecutive time intervals including:
- a first time interval during which the subcutaneous fat region is exposed to the electromagnetic radiation at a first power density;
- a second time interval during which the subcutaneous fat region is exposed to the electromagnetic radiation while the electromagnetic radiation decreases from the first power density to a second power density in a continuous manner;
- and
- a third time interval during which the subcutaneous fat region is exposed to the electromagnetic radiation at the second power density, wherein the first time interval is shorter than the sum of the second time interval and the third time interval.
A method of treating a subcutaneous fat region, comprising:
- generating electromagnetic radiation having a non-fat selective wavelength;
- delivering the electromagnetic radiation to the subcutaneous fat region for at least 300 seconds;
- cooling an epidermal region and at least a portion of a dermal region overlying the subcutaneous fat region for at least a portion of the at least 300 seconds;
- causing necrosis of at least one fat cell in the subcutaneous fat region;
- and
- adjusting an average power density based on a thickness of skin overlying the subcutaneous fat region,
- wherein delivering the electromagnetic radiation to the subcutaneous fat region comprises delivering the electromagnetic radiation in three consecutive time intervals including:
- a first time interval during which the subcutaneous fat region is exposed to the electromagnetic radiation at a first power density;
- a second time interval during which the subcutaneous fat region is exposed to the electromagnetic radiation while the electromagnetic radiation decreases from the first power density to a second power density;
- and
- a third time interval during which the subcutaneous fat region is exposed to the electromagnetic radiation at the second power density, wherein the first time interval is shorter than the sum of the second time interval and the third time interval.
Dependencies are inferred from the claim text.