Punching needle and handpiece for hair extraction

A handpiece used to extract hair from patient's skin, comprising:

• a housing;
• a power generator provided in the housing;
• a power transmitting part configured to transmit a rotating force generated from the power generator;
• and
• a punching needle engaged with a front portion of the power transmitting part and inserted into the patient's skin while being rotated due to the rotating force generated from the power generator,
• wherein an accommodation space, into which follicle of extraction target hair is inserted, is formed in the inside of a front portion of the punching needle,
• a punching portion of contacting with the patient's skin and punching the patient's skin is provided in the front end portion of the punching needle,
• the punching portion comprises a first punching portion and a second punching portion which have different-shaped cutting edges, and
• a first cutting edge provided in the first punching portion is formed in a shape that is sharper than that of a second cutting edge provided in the second punching portion.