The working principle of the HIFU (High Intensity Focused Ultrasound) machine is primarily based on the high-energy focusing principle of ultrasound. The following is a detailed explanation of its working mechanism:


I. Ultrasound Focusing Principle

The HIFU machine utilizes ultrasound waves of a specific frequency to focus and irradiate human skin tissue. As these ultrasound waves penetrate the skin tissue, their energy gradually converges onto a very small point, typically located at the SMAS fascia layer or other targeted layers beneath the skin.


II. Energy Transmission and Thermal Effect

When the ultrasound energy is focused on the target layer, it forms high-intensity thermal coagulation points. These thermal coagulation points stimulate the loose fascia layer to contract and tighten through thermal effects, and also promote the regeneration of collagen. The proliferation of collagen helps to increase skin elasticity, reduce wrinkles, and achieve a layer-by-layer lifting and tightening effect.



III. Probe Design and Application

HIFU machines are typically equipped with multiple probes to address different skin concerns and treatment needs. For example, the 3.0mm probe is mainly used to improve the deep and middle dermis, increase skin collagen and elastin, tighten and enhance skin elasticity, and smooth out wrinkles and fine lines. The 4.5mm probe, on the other hand, can tighten the SMAS layer, pulling the muscles and skin together to achieve a lifting effect on facial contours.




IV. Treatment Process and Effects

During the treatment process, the doctor will select the appropriate probe and treatment parameters based on the patient's skin condition and needs. The ultrasound energy is precisely delivered to the target layer through the probe, forming thermal coagulation points and stimulating collagen regeneration. After the treatment, patients can visibly see improvements such as increased skin tightness and reduced wrinkles.


V. Safety and Precautions

HIFU treatment is a non-invasive therapy that is relatively safe with a short recovery period. However, it is still necessary to avoid excessive stimulation and damage to the skin during the treatment process. After the procedure, patients should avoid local massage and rubbing of the treated area to prevent compromising the treatment effects.


In summary, the HIFU machine delivers energy precisely to the targeted layers beneath the skin through the high-energy focusing principle of ultrasound. It achieves skin tightening, lifting, and collagen regeneration through thermal stimulation. This non-invasive treatment method has been widely used in the field of aesthetics and has achieved good clinical outcomes.