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Title: Suction cups-inspired adhesive patch with tailorable patterns for versatile wound healing
Authors: Huang, R
Zhang, X
Li, W 
Shang, L
Wang, H
Zhao, Y
Issue Date: Sep-2021
Source: Advanced science, 8 Sept 2021, v. 8, no. 17, 2100201
Abstract: Medical patches play an important role in wound healing because of their tissue conformality, drug release capacity, and convenient operation. Great efforts have been devoted to developing new-generation patches with distinctive features promoting wound healing. Here, inspired by the structure of octopus suction cups and the component of natural tissue, a biocompatible wound patch with selective adhesiveness and individualized design using a combined strategy of template-replication and mask-guided lithography is presented. Such patches are based on Ecoflex film with suction-cup-mimicking microstructures to adhere to normal skin and with biocompatible gelatin methacryloyl (GelMA) hydrogel to contact wounded areas. An ultraviolet mask with a tailorable pattern is employed to shape the GelMA hydrogel into customized geometry replicating individual wound areas, and thus both adhesion and antiadhesion properties are integrated into the same patch. In addition, vascular endothelial growth factor is loaded to accelerate the healing process. Based on these advantages, the authors demonstrate that the present patches not only adhere to different skin surfaces, but also promote the treatment of a rat cutaneous wound model. Thus, it is believed that this versatile patch can break through the limitation of traditional patches and be ideal candidates for wound healing and related biomedical applications.
Keywords: Bioinspired patches
Selective adhesion
Tailorable patterns
Wound healing
Publisher: Wiley-VCH
Journal: Advanced science 
ISSN: 2198-3844
DOI: 10.1002/advs.202100201
Rights: © 2021 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Ain Shams University. This is an open access article under the CC BY-NC-ND license (
The following publication Huang, R., Zhang, X., Li, W., Shang, L., Wang, H., Zhao, Y., Suction Cups-Inspired Adhesive Patch with Tailorable Patterns for Versatile Wound Healing. Adv. Sci. 2021, 8, 2100201 is available at
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