Treatment tip, hand tool and high-frequency skin treatment device

A treatment tip for a high-frequency skin treatment device irradiating radio frequency (RF), the tip being coupled to a handpiece to radiate an RF signal to a human skin in an invasive way, and comprising:

• a needle plate portion, having a plurality of needles;
• an adapter board portion;
• and
• a first flexible printed circuit, mechanically and electrically coupled between the needle plate portion and the adapter board portion;
• wherein in relation to the adapter board portion, the needle plate portion is driven to move forth at a first position where the plurality of needles penetrate and radiate the RF signal into the skin;
• and the needle plate portion is driven to move back at a second position where the plurality of the needles to move away from the skin;
• and
• wherein the plurality of needles are partitioned and controlled such that the RF signal from the handpiece is transmitted sequentially through the adapter board portion, the first flexible printed circuit and the needle plate portion to the partitioned plurality of the needles that radiate the RF signal to different zones of the skin.