Three-dimensional radiofrequency tissue tightening: a proposed mechanism and applications for body contouring

Abstract

The use of radiofrequency energy to produce collagen matrix contraction is presented. Controlling the depth of energy delivery, the power applied, the target skin temperature, and the duration of application of energy at various soft tissue levels produces soft tissue contraction, which is measurable. This technology allows precise soft tissue modeling at multiple levels to enhance the result achieved over traditional suction-assisted lipectomy as well as other forms of energy such as ultrasonic and laser-generated lipolysis.

Figures

Fig. 1

Ex vivo experimental setup

Fig. 2

Schematic drawing of RF handpiece inserted into the body

Fig. 3

Temperature profile inside adipose tissue during the RFAL treatment

Fig. 4

Before and after RFAL and intraoperative two-point linear contraction registration points from pubic RFAL incision point to the lower pole of the umbilicus

Fig. 5

Adipose-septal tissue behavior during RF energy delivery at different time points

Fig. 6

Adipose-fibrous septal tissue thermal behavior during RF energy delivery at different time points

Fig. 7

Fascia contraction behavior during RF energy delivery at different time points

Fig. 8

Skin contraction behavior during RF energy delivery at different time points

Fig. 9

Normal skin histology 12 months following optimal RFAL thermal end point

Fig. 10

Same RFAL patient with 43% contraction and normal elastic fiber content

Fig. 11

Correlation between aspirated volume and linear contraction

Fig. 12

Correlation between BMI and linear contraction

Fig. 13

Correlation between total energy and linear contraction