Mechanical Property of Thermoplastic Polyurethane Vascular Stents Fabricated by Fused Filament Fabrication

Vascular stents have many applications in treating arterial stenosis and other vascular-related diseases. The ideal vascular stent for clinical application should have radial support and axial bending mechanical properties that meet the requirements of vascular deformation coordination. The material...

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Bibliographic Details
Published in:Micromachines (Basel) 2024-10, Vol.15 (10), p.1266
Main Authors: Zhai, Yun, Sun, Zezhi, Zhang, Tie, Zhou, Changchun, Kong, Xiangpeng
Format: Article
Language:English
Subjects:
3-D printers
3D printing
Additive manufacturing
Aortic aneurysms
Biocompatibility
Blood coagulation
Blood vessels
Compliance
Deformation
Flexibility
Fused deposition modeling
fused filament fabrication
Mechanical properties
mechanical property
Medical device industry
Medical equipment
Performance evaluation
Polyurethane resins
Polyurethanes
Quadrilaterals
Shear strength
Stent (Surgery)
Stents
Stress concentration
Surgical implants
Three dimensional printing
unit structure
Urethane thermoplastic elastomers
vascular stent
Veins & arteries
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Summary:Vascular stents have many applications in treating arterial stenosis and other vascular-related diseases. The ideal vascular stent for clinical application should have radial support and axial bending mechanical properties that meet the requirements of vascular deformation coordination. The materials used for vascular stents implanted in the human body should have corresponding biocompatibility to ensure that the stents do not cause coagulation, hemolysis, and other reactions in the blood. This study fabricated four types of vascular stents, including inner hexagon, arrowhead, quadrilateral, and outer hexagonal, using fused filament fabrication technology and thermoplastic polyurethane (TPU) as materials. By evaluating the effects of edge width and wall thickness on the radial support and axial bending performance, it was found that the inner hexagonal stent exhibited the best radial support and axial bending performance under the same conditions. The design and fabrication of vascular stents based on 3D printing technology have promising application prospects in personalized customized vascular repair therapy.
ISSN:2072-666X
2072-666X
DOI:10.3390/mi15101266