Treatment device and treatment method using same

An RF energy treatment apparatus, comprising:

• a handpiece;
• a plurality of needles formed to advance and retract on one side of the handpiece and supplied with a high frequency current;
• a pressurization unit positioned in a direction in which the plurality of needles advances and retracts and providing tension to a skin by applying a positive pressure to the skin;
• a sensing unit comprising at least one sensor configured to sense an amount of force applied to the skin by the pressurization unit, the amount of force corresponding to the tension that is provided to the skin;
• and
• a controller coupled to the sensing unit,
• wherein the sensing unit is configured to compare the amount of force sensed by the sensing unit to a set reference value so that the tension provided to the skin is above a threshold value before the plurality of needles is advanced through the skin,
• wherein the pressurization unit includes an elastic member which is configured to deform over curved surfaces of the skin, and wherein an entire tissue-contacting surface of the pressurization unit is planar.