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. 2021 Jan 6;7(2):eaba4261. doi: 10.1126/sciadv.aba4261

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Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

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Fig. 5 — (A) Illustration of the blood vessel expansion and drug releasing functions of the printed SMP-hydrogel stent. (B) Overall design of the SMP-hydrogel stent. (C) Detailed design shows that the SMP rod is surrounded the hydrogel skin loaded with drugs. (D) Illustration of the SMP-hydrogel programmed to a compacted shape. (E) DMA result indicates that the T_g of the SMP used to print the stent is 30°C. (F to H) Snapshots of printed SMP-hydrogel stents. (F) As-printed SMP-hydrogel stent. (G) SMP-hydrogel stent in programmed compacted shape. (H) SMP-hydrogel stents with different sizes. (I) Example to demonstrate both shape memory and drug releasing functions. (J) Quantified drug releasing process. Scale bar, 5 mm. (Photo credit: Jianxiang Cheng, Southern University of Science and Technology.)