Two-Layered Biomimetic Flexible Self-Powered Electrical Stimulator for Promoting Wound Healing

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Nanotechnology

Background:

• Wound repair remains a significant clinical challenge.
• Electrical stimulation shows promise for enhancing wound healing.
• Self-powered therapeutic devices offer advanced wound care solutions.

Purpose of the Study:

• To design and develop a self-powered electrical-stimulator-based wound dressing (SEWD).
• To integrate bionic piezoelectric nanofibers with a biomimetic conductive hydrogel.
• To evaluate the efficacy of SEWD in promoting wound healing.

Main Methods:

• Fabrication of a two-layered SEWD combining P(VDF-TrFE) piezoelectric nanofibers and a mussel-inspired conductive hydrogel.
• Characterization of SEWD's mechanical, adhesive, self-powered, and biocompatible properties.
• In vitro and in vivo testing to assess the wound healing capabilities of SEWD.

Main Results:

• The bionic tree-like piezoelectric nanofibers exhibited enhanced mechanical properties and piezoelectric sensitivity.
• The conductive hydrogel mimicked tissue electrical activity and efficiently delivered electrical signals.
• SEWD successfully converted mechanical energy into electrical signals, stimulating cell proliferation and accelerating wound healing in vitro and in vivo.

Conclusions:

• The developed SEWD represents a significant advancement in self-powered wound healing technologies.
• This innovative wound dressing offers a rapid, safe, and effective strategy for treating skin injuries.
• The integration of piezoelectric and conductive hydrogel materials holds great potential for future therapeutic applications.