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Updated: Oct 31, 2025

Assessment of Acute Wound Healing using the Dorsal Subcutaneous Polyvinyl Alcohol Sponge Implantation and Excisional Tail Skin Wound Models.

Assessment of Acute Wound Healing using the Dorsal Subcutaneous Polyvinyl Alcohol Sponge Implantation and Excisional Tail Skin Wound Models.

Published on: March 25, 2020

Suction Cups-Inspired Adhesive Patch with Tailorable Patterns for Versatile Wound Healing.

Rongkang Huang¹, Xiaoxuan Zhang^2,3, Wenzhao Li⁴

¹Department of Colorectal Surgery and Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology, Sixth Affiliated Hospital of Sun Yat-sen University, Guangdong, 510655, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|July 1, 2021

Summary

New biocompatible wound patches mimic octopus suction cups for selective adhesion. These advanced medical patches promote healing and offer individualized designs for better wound care applications.

Keywords:

bioinspired patches biomaterials selective adhesion tailorable patterns wound healing

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Area of Science:

Biomaterials Science
Regenerative Medicine
Tissue Engineering

Background:

Medical patches are crucial for wound healing, offering tissue conformity and drug delivery.
Existing patches have limitations in adhesion and customization for diverse wound types.

Purpose of the Study:

To develop an advanced biocompatible wound patch with selective adhesion and individualized design.
To enhance wound healing through a novel patch integrating octopus suction cup-inspired microstructures and customizable hydrogels.

Main Methods:

Fabrication of patches using Ecoflex film with suction-cup microstructures for skin adhesion.
Utilizing gelatin methacryloyl (GelMA) hydrogel shaped by mask-guided lithography for wound contact.
Incorporation of vascular endothelial growth factor (VEGF) for accelerated healing.

Main Results:

The patches demonstrated selective adhesion to normal skin while adhering to wounded areas.
Customizable GelMA hydrogel geometry effectively replicated individual wound shapes.
VEGF-loaded patches promoted faster healing in a rat cutaneous wound model.

Conclusions:

The developed biocompatible wound patch offers a versatile solution overcoming limitations of traditional wound dressings.
Its unique design combining selective adhesion and customized geometry shows significant potential for advanced wound healing and biomedical applications.