| 摘要 |
The present invention relates to an airjet handpiece comprising a height-adjustable spraying nozzle, wherein the airjet handpiece utilizes air pressure to instantly inject a drug into the skin and thus enables the drug to spread and diffuse under the skin. The airjet handpiece is used to provide skin elasticity and treat or remove skin-wrinkles, stretch marks, dead skin cells and hair loss. Such airjet handpieces are configured to minimize pain while enabling the drug to rapidly penetrate into the skin, thereby not only improving the spraying efficiency, but also allowing the user to control the spraying strength and the penetration depth of the drug in the skin by controlling the height of the spraying nozzle. |
