Local Tolerability and Performance Evaluation in Domestic Pigs of a Fractional Radiofrequency Device for Dermatologic Treatment

Abstract

<jats:p> Information on the safety of energy-based dermatological surgical devices in domestic pigs, and fractional radiofrequency (RF) devices in particular, is very limited. The aim of this study was to evaluate in a GLP-compliant study in domestic pigs the local reaction and performance of a novel fractional RF device. Five female domestic pigs were subjected to fractional RF pulses, using different energy and pulse durations and depth of penetration of the pulses. The animals were evaluated clinically and histologically at different time points (days 0, 1, 3, 7, and 14) postenergy exposure. There were no microscopic or macroscopic local adverse effects in any tested power settings, and there was time-related progressive healing, reaching complete macroscopic and microscopic healing by 7 days postapplication. As expected, there was power-related progressive increase in the incidence of ablation (destruction of skin tissue by vaporization) and coagulative necrosis of the dermis from low to high power setting. This comprehensive study, using multiple power settings (both ablative and coagulative) and several time points, will be of benefit for future studies evaluating new fractional RF devices. </jats:p>

Safety and efficacy of a novel robotic, fractional micro-coring device in a swine model

“…One of the popular skin rejuvenation techniques is fractional resurfacing, in which microscopic columns of the skin are ablated, resulting in undamaged intervening skin that facilitate quick re-epithelialization. Damage to the dermis results in synthesis of collagen and formation of a new structural matrix, leading to increased skin tension, carrying the potential for several positive clinical outcomes [1][2][3][4][5][6] .…”

“…Energy-based devices have been developed to achieve fractional resurfacing, by producing heatinduced coagulation and necrosis of the dermis, leading to the formation of new cells 6,7 .…”