TECHNICAL FIELD

The present invention relates to a skin treatment device using a radio frequency (RF), which is capable of effectively treating pigmentation of the skin.

BACKGROUND ART

Various methods have been used to improve pigmentation. Methods using energy based devices include intense pulsed light (IPL) and laser. Methods using drugs include vitamin C, tretinoin, and hydroquinone. In addition, glycolic acid peeling, TCA peeling, and phenol peeling have been used as chemical peeling.

Among them, the most popular lasers have been used, and the types thereof are Nd:YAG laser toning, factional laser, dye/yellow laser, and long pulsed Nd:YAG. However, there is a fatal disadvantage that many problems occur in the treatment of pigmentation using laser.

First, inflammatory pigmentation (post inflammatory hyperpigmentation (PIH)) and hyperpigmentation. As the skin becomes inflamed, melanin is excessively produced to protect it, resulting in brown or dark red pigmentation of a treatment site. This is due to the excessively large energy of the laser, and because the photon energy is 1 to 3 eV, it causes thermal damage to a deeper part of a skin layer where surrounding tissues and pigments are located, causing an inflammatory reaction. Cells (melanophage) are formed by lodging in a deep layer of the skin.

Second, it is hypopigmentation. It is a symptom that occurs when melanin in the treatment site is relatively insufficient compared to the surrounding skin, and the treatment site becomes excessively whiter than the surrounding tissues. It is caused by the destruction of melanocytes that produce melanin as too much energy is transmitted into the skin with the high energy of the laser. There is a fatal problem that recovery is difficult, and it often occurs when the number of laser treatments is large.

In addition, IPL has a wide wavelength range and has a high overall energy, but has a relatively low intensity of specific energy required for melasma treatment, so there is a limit to melasma treatment. In addition, there is a problem of destroying surrounding cells by applying a relatively large amount of energy.

DETAILED DESCRIPTION OF THE INVENTION

Technical Problem

The present invention provides a skin treatment device using a radio frequency (RF), which is capable of effectively treating pigmentation of the skin.

Technical Solution

According to an aspect of the present invention, there is provided a skin treatment device using an RF, the skin treatment device including an RF generator configured to generate an RF output and an applicator being of a bipolar type and including an applicator body and needles, wherein the needles are arranged on a front surface of the applicator body, inserted into a dermal layer of the skin of a person to be treated and electrically connected to the RF generator to transmit the RF output, wherein, when the applicator is turned on, the applicator transmits a single or a plurality of RF pulses according to the RF output to the person to be treated, and the RF output is 5 W or more and 13 W or less, and a frequency of the RF output is greater than 1 MHz and less than 3 MHz, and a duration of the RF pulse according to the RF output is 50 ms or more and 100 ms or less.

The number of the needles may be 16 or more and 49 or less, and the skin invasion depth of the needles may be greater than 0 mm and 1 mm or less.

A frequency of the RF output may be 2 MHz.

Effects of the Invention

In a skin treatment device using a radio frequency (RF) according to the present invention, pigmentation of the skin can be greatly reduced using an RF output.

