Tumescent liposuction
The word tumescent refers to anything that is swollen and firm. The tumescent liposuction technique, in which a large volume of very dilute solution of local anesthesia is injected, is the only technique that permits liposuction totally by the local anesthetic. The anesthetic (lidocaine and epinephrine) is infiltrated (injected) into the fat beneath the skin, causing the targeted area to become tumescent, in other words, swollen and firm. The local anesthetic lidocaine in the tumescent solution provides such complete local anesthesia, that it eliminates the need for general anesthesia, or IV sedation. The drug epinephrine (adrenalin) provides profound localized vasoconstriction that it virtually eliminates surgical bleeding during tumescent liposuction. By eliminating the risks of general anesthesia and the risks of excessive surgical bleeding, the tumescent technique for liposuction totally by local anesthesia has eliminated the greatest dangers associated with the older forms of liposuction.
Ultrasound-assisted liposuction (UAL)
This is a new method, ultrasound-assisted liposuction (UAL), in this procedure, sound waves are use to liquefy the fat after the injection of fluids. ultrasound-assisted liposuction also minimizes trauma, causing less bruising and blood loss. UAL is particularly useful on fibrous areas of the body, such as the male breast, the upper abdomen, and the upper back, which are difficult to treat with traditional techniques.
Dry liposuction
An earlier method of liposuction, called dry liposuction because no liquefying agent was used, required general anesthesia. This technique is not in frequent use today.
The technique chosen for your operation will be determined by a combination of factors, including the precise area to be treated, the amount of fat to be removed, your surgeon’s training and experience, and your preferences.
Laser Liposuction,
Also know as Laser Lipolysis or Liposculpture. This laser procedure was developed as an alternative to the manual method used in tumescent and traditional liposuction. It was also developed to help cosmetic surgeons target specific body parts that were difficult to access with the more traditional methods, but are perfectly suited to laser body sculpting.
This liposuction technique is different than traditional liposuction. In some techniques of laser liposuction, suction is used, while in others no actual suction is actually used. Instead of using the cannula to remove fatty deposits beneath the skin, the cannula actually houses a laser and the laser is used to literally melt the fat of the target area away. After the fat has been liquefied using laser liposuction, it is drained from the body using tiny incisions or gently suctioned away. The procedure is considered gentler than other liposuction techniques because of the smaller cannula used and because of the smaller size of the incisions. This also means less scarring. Because of the heat used in the laser liposuction procedure, the body naturally reacts by contracting the tissues near procedure which causes the skin to tighten and become smoother.
Sources:
http://www.lipo4me.com/liposuction_techniques.asp
http://www.liposuction.com/lipo_techniques/index.php