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Related Experiment Video

Updated: Jan 21, 2026

4D Printed Bifurcated Stents with Kirigami-Inspired Structures

4D Printed Bifurcated Stents with Kirigami-Inspired Structures

Published on: July 25, 2019

4D Printed Bifurcated Stents with Kirigami-Inspired Structures.

Dahong Kim¹, Taeyoung Kim¹, Yong-Gu Lee²

¹School of Mechanical Engineering, Gwangju Institution of Science and Technology.

Journal of Visualized Experiments : Jove

|August 13, 2019

Summary

Researchers developed novel bifurcated stents using shape memory polymers and kirigami patterns. These stents can be compacted for delivery and expand to support branched vessels, addressing critical challenges in vascular repair.

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4D Printed Bifurcated Stents with Kirigami-Inspired Structures

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Published on: July 25, 2019

4D Microscopy of Yeast

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Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

Area of Science:

Biomedical Engineering
Materials Science
Vascular Surgery

Background:

Branched blood vessels, often Y-shaped, are susceptible to narrowing or blockage, leading to severe health issues.
Bifurcated stents are crucial for maintaining fluid flow in these vessels but face deployment challenges due to size constraints.

Purpose of the Study:

To engineer a novel bifurcated stent capable of navigating narrow vessels and expanding to provide structural support.
To overcome the conflicting requirements of small delivery size and large functional diameter for bifurcated stents.

Main Methods:

Utilized a shape memory polymer (SMP) for self-initiated shape change from a compacted to an expanded state.
Incorporated a kirigami pattern to enable the folding of branching tubes into a smaller diameter for delivery.

Main Results:

The developed techniques allow for the creation of structures that compact for transport and return to their functional shape upon activation.
Successfully engineered a bifurcated stent design addressing the critical size and expansion challenges.

Conclusions:

The combination of shape memory polymers and kirigami patterns offers a promising solution for advanced bifurcated stent design.
Further research into biocompatibility is necessary for the clinical application of these novel medical stents.