Patent ID: 8666487

Claim:
A device for skin treatment of a patient's skin, comprising: a plurality of needles, a portion of each of the needles except for a sharp end being coated with an insulator; a needle holding unit for holding the needles; a drive unit for directly or indirectly transmitting a force to the needle holding unit, thus allowing the needles held by the needle holding unit to be inserted into the skin; an electromagnetic wave transmitting unit electrically connected to the needles and transmitting electromagnetic waves to the needles; an internal casing being open in an upper portion thereof such that the needles, the needle holding unit, and the electromagnetic wave transmitting unit are fitted therein to be protected, and having in a lower portion thereof a plurality of first holes to permit passage of the needles; a first cover for covering the internal casing; a skin support member being open in an upper portion thereof such that an assembly having the needles, the needle holding unit, the electromagnetic wave transmitting unit and the internal casing is inserted into the open upper portion, and having in a lower portion thereof arranged for contacting the skin a plurality of second holes such that the needles pass through the second holes; a second cover for covering the skin support member; an elastic member having an elastic restoring force to move the needle holding unit away from the skin; wherein the elastic member is placed between the needle holding unit and the first holes or between the needle holding unit and the second holes; a memory unit having data on the plurality of needles; wherein the drive unit comprises an adjusting member to adjust an insertion depth of the needles into the skin, the adjusting member comprising bodies of different thicknesses to directly or indirectly control forward movement of the drive unit, so that a body of the adjusting member is fitted into the drive unit.