Patent ID: 8540705

Claim:
A method of cosmetically improving an appearance of skin by creating a controlled lesion in a region of dermal tissue adjacent to the skin, the region of dermal tissue having a set of electrical parameters comprising a first set of parameter values, the method comprising: applying a substance to the region of skin and the tissue, where application of the substance causes variance of at least one of the set of electrical parameters resulting at least a second set of parameter values; inserting at least one energy transfer unit through an epidermal layer of the skin where the energy transfer unit is electrically coupleable to an energy source and a controller; and controlling application of energy from the energy transfer unit to the region of dermal tissue in a manner to maintain the region at a treatment temperature for a treatment time to limit a volume of the lesion in the dermal tissue, where the controller maintains the treatment temperature independently of the of the variance between the first and second set of parameter values.