Treatment device using R.F. electrical current for heating a first inner region and a second inner region of skin

A non-invasive treatment device for heating a first inner region and a second inner region of skin using radio-frequency (r.f.) electrical current, the second inner region being at a deeper location in the skin than the first inner region, the device comprising:

• a first r.f. treatment electrode configured and arranged to allow r.f. electrical current to pass through an outer surface of the skin and through the first inner region;
• a return electrode configured and arranged to allow r.f. electrical current to pass through the first inner region and the outer surface of the skin, wherein the return electrode is used in combination with the first r.f. treatment electrode for a skin rejuvenation treatment;
• a first r.f. generator configured and arranged such that, in use for heating the first inner region, a first r.f. current is applied through the first inner region between the first r.f. treatment electrode and the return electrode operating in bipolar mode;
• a second r.f. treatment electrode configured and arranged to allow r.f. electrical current to pass through the outer surface of the skin and through the second inner region;
• the return electrode being further configured and arranged to allow r.f. electrical current to pass through the second inner region and the outer surface of the skin, wherein the return electrode is used in combination with the second r.f. treatment electrode for a skin tightening treatment;
• and
• a second r.f. generator configured and arranged such that, in use for heating the second inner region, a second r.f. current is applied through the second inner region between the second r.f. treatment electrode and the return electrode operating in bipolar mode;
• wherein a smallest distance between the first r.f. treatment electrode and the return electrode is less than a smallest distance between the second r.f. treatment electrode and the return electrode;
• wherein the first r.f. treatment electrode, the second r.f. treatment electrode and the return electrode each comprise an electrical skin contact area, a maximum dimension of the first r.f. treatment electrode proximate the electrical skin contact area of the first r.f. treatment electrode being less than or equal to 1 mm, and the electrical skin contact area of the return electrode being 5 or more times larger than the electrical skin contact area of the first r.f. treatment electrode, wherein, for skin rejuvenation, a skin region effectively heated by the first r.f. electrical current will be at a first treatment target proximate to, immediately below, the first r.f. treatment electrode while reducing a possibility of undesirable hotspots proximate to the return electrode,
• wherein the electrical skin contact area of the second r.f. treatment electrode is 5 or more times larger than the electrical skin contact area of the first r.f. treatment electrode, wherein, for skin tightening, a skin region effectively heated by the second r.f. electrical current will be at a second treatment target intermediate the second r.f. treatment electrode and the return electrode;
• the device further comprising:
• a controller to selectively activate the first r.f. generator and the second r.f. generator either separately or alternately for applying both skin rejuvenation and skin tightening treatments at a same position of the treatment device on the skin.