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Updated: Jun 11, 2025
Fabrication and Characterization of a Conformal Skin-like Electronic System for Quantitative, Cutaneous Wound Management
Published on: September 2, 2015
A three-dimensional printable conductive composite dressing for accelerating wound healing under electrical
Xinxiang Chai1, Yanzhen Lou1, Lei Nie2
1School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China; International Scientific and Technological Cooperation Base of Intelligent Biomaterials and Functional Fibers of Zhejiang Province, Hangzhou 310018, China.
This study developed a 3D printed conductive composite dressing using poly(vinyl alcohol) and κ-carrageenan, enhanced with ZnO nanoparticles. The dressing demonstrates excellent antibacterial, blood clotting, and wound healing properties, outperforming commercial options.
Area of Science:
- Biomaterials Engineering
- Regenerative Medicine
- Nanotechnology
Background:
- Advanced wound dressings are crucial for effective healing.
- Conductive biomaterials offer potential for enhanced therapeutic outcomes.
- Antimicrobial and anti-inflammatory agents are vital for infection prevention and tissue repair.
Purpose of the Study:
- To develop a novel 3D printable conductive composite dressing.
- To incorporate antibacterial and anti-inflammatory functionalities into the dressing.
- To evaluate the dressing's performance in blood clotting and wound healing.
Main Methods:
- Fabrication of a bioink using poly(vinyl alcohol) (PVA), κ-carrageenan, PEDOT:PSS, and (+)-Catechin-loaded mesoporous ZnO (CmZnO).
- Utilizing extrusion 3D printing technology to create the composite dressing.
- Assessing conductivity, blood clotting, adhesion, antibacterial activity (Staphylococcus aureus, Escherichia coli), and in vivo wound healing in a full-thickness skin defect model with electrical stimulation.
Main Results:
- The composite dressing exhibited suitable conductivity, efficient blood clotting, and good adhesiveness.
- Demonstrated high antibacterial activity: 92.9% against S. aureus and 95.6% against E. coli.
- In vivo studies showed enhanced blood clotting and accelerated wound healing compared to commercial dressings, evidenced by upregulated CD-31 and downregulated IL-6 gene expression.
Conclusions:
- The 3D printed conductive composite dressing possesses significant potential for wound management.
- The combination of conductivity, antimicrobial properties, and electrical stimulation promotes faster and more effective wound healing.
- This innovative dressing represents a promising advancement in regenerative medicine and biomaterial applications.
