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Shape transformable bifurcated stents.

Taeyoung Kim1, Yong-Gu Lee2

  • 1School of Mechanical Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea.

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|September 19, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces 3D printing and shape memory polymers (SMPs) to create customizable, deliverable bifurcated stents. These advanced stents navigate narrow vessels smoothly, improving stent insertion success rates.

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Area of Science:

  • Biomedical Engineering
  • Materials Science

Background:

  • Non-invasive delivery of medical devices like stents is crucial for patient recovery.
  • Challenges exist in delivering devices through narrow passages while maintaining therapeutic effectiveness.

Purpose of the Study:

  • To design and fabricate patient-customizable bifurcated stents for non-invasive delivery.
  • To overcome the shape compromise between effective form and deliverable thinness.

Main Methods:

  • Utilized 3D printing for patient-specific object creation.
  • Employed shape memory polymers (SMPs) for shape transformation upon external stimulation.
  • Developed a kirigami structure for stent design.
  • Tested the stent delivery in a silicone blood vessel mock-up.

Main Results:

  • Demonstrated successful fabrication of bifurcated stents using 3D printing and SMPs.
  • The kirigami-structured stent navigated a silicone vessel mock-up without obstruction.
  • Validated the effectiveness of the proposed method in a simulated environment.

Conclusions:

  • The combination of 3D printing and SMPs enables the creation of effective, deliverable bifurcated stents.
  • The kirigami stent design facilitates smooth passage through complex vasculature.
  • This approach has the potential to enhance the success rates of stent insertion procedures.