2. Negative pressure liposuction: First, apply swelling anesthetic. Under the action of pressure, fat cells can be released and blood vessels and nerves can be sealed, which can protect internal tissues. An electric suction device or a special negative pressure liposuction machine is used to connect the liposuction catheter with different types of metal straws, so that vacuum negative pressure is formed in the closed bottle, and the pretreated fat is sucked out through a small incision in the skin. At present, negative pressure liposuction is the most popular in the world.
3. Electronic liposuction: a high-frequency electric field is generated between the two electrodes, under the action of the high-frequency electric field, fat cells are polarized, and fat tissue lumps are broken and liquefied into chylous samples, which is convenient for negative pressure suction. Its advantage is that it can set different intensities according to needs and is suitable for liposuction in various parts of the body. However, liposuction is slow, and liposuction has been liquefied and destroyed, so it can not be used for fat transplantation, so it is not popular in clinic.
4. Ultrasonic liposuction: In low-density adipose tissue, molecular adhesion is weak, and the lower negative pressure generated by ultrasonic wave can produce tissue gap, which is called "cavitation phenomenon" in physics. Then the liquefied fat liquid is pumped out by a high-energy negative pressure aspirator. Less trauma to patients, less bleeding and quick recovery.
5. Hydroliposuction: Pressurized water flow accurately acts on the target tissue to selectively separate fat cells. Anesthesia and liposuction are performed simultaneously. The biggest difference with negative pressure liposuction is that anesthetic stays in the human body for a short time. Hydraulic surgery takes less time and costs more.