Micro-mechanical fractional skin rejuvenation

Area of Science:

• Dermatology
• Regenerative Medicine
• Biomedical Engineering

Background:

• Laser resurfacing is a common skin rejuvenation procedure with associated risks and costs.
• A novel device utilizing micro-coring needles offers a fractional tissue removal method to mitigate laser therapy side effects.

Purpose of the Study:

• To compare the efficacy of novel micro-coring needles against standard needles for skin rejuvenation.
• To evaluate the histological and biochemical changes induced by micro-coring in a preclinical model.

Main Methods:

• Three needle types (standard hypodermic, solid hypodermic, novel coring) were tested on swine.
• Fractional treatment coverage of 20% or 40% was applied to 1x1-inch sites.
• Histological and collagen content analyses were performed on biopsy specimens over 84 days.

Main Results:

• Micro-coring sites exhibited rapid healing without scarring or infection.
• Significant increases in fibroblast activity and newly synthesized collagen were observed.
• Epidermal and dermal thickness increased up to 196%, with enhanced rete ridges, indicating regeneration.

Conclusions:

• The novel micro-coring needle approach effectively induces microscopic and biological markers of skin rejuvenation.
• This method presents a potentially safe and cost-effective alternative for treating rhytides, laxity, photodamage, scarring, and striae.