File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Direct 3D printing of thin-walled cardiovascular stents with negative Poisson's ratio (NPR) structure and functional metallic coating

TitleDirect 3D printing of thin-walled cardiovascular stents with negative Poisson's ratio (NPR) structure and functional metallic coating
Authors
Keywords3D printing
Cardiovascular stent
Mechanical metamaterial
Negative Poisson's ratio (NPR) microlattice
Polymer composite
Issue Date2023
Citation
Composite Structures, 2023, v. 306, article no. 116572 How to Cite?
AbstractTo realize sufficient radial supporting capacity, currently proposed 3D-printed polymer vascular stents often have thicknesses >400 μm, much thicker than the ASTM criteria of ∼25–177 μm, which would bring the potential risk of in-stent restenosis. Here, based on high-resolution projection micro-stereolithography (PμSL) 3D printing and metal thin film deposition, we proposed the design and manufacturing of thin-walled 3D-printed composite cardiovascular stents with sufficient radial supporting ability. Firstly, negative Poisson's ratio (NPR) microlattice structure was designed and printed as the scaffold for thin-walled vascular stent, and then sputtered with gold (Au) nano thin film through radio-frequency (RF) magnetron sputtering for radial strengthening. As a result, the composite stents realized up to ∼70% radial compressive strengthening accompanied by slightly increased toughness, and a 10%–20% stent thickness reduction. With thin film gold coating, the stent can also resist 35% radial compression deformation, and showing good cytocompatibility. Finally, composite stents with wall thickness as thin as ∼150 μm and sufficient radial support ability was successfully realized. This work provides a potential solution to overcome the dilemma that thin wall thickness and sufficient radial support capacity cannot be achieved at the same time, and inspires more medical device applications based on novel 3D-printed mechanical metamaterials.
Persistent Identifierhttp://hdl.handle.net/10722/326379
ISSN
2023 Impact Factor: 6.3
2023 SCImago Journal Rankings: 1.601
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXiao, Ran-
dc.contributor.authorFeng, Xiaobin-
dc.contributor.authorLiu, Wengang-
dc.contributor.authorZhou, Wenzhao-
dc.contributor.authorLi, Xiang-
dc.contributor.authorSong, Insu-
dc.contributor.authorDing, Mingyang-
dc.contributor.authorPu, Yiru-
dc.contributor.authorZhang, Dingkun-
dc.contributor.authorFan, Rong-
dc.contributor.authorChen, Ting Hsuan-
dc.contributor.authorLu, Yang-
dc.date.accessioned2023-03-09T10:00:14Z-
dc.date.available2023-03-09T10:00:14Z-
dc.date.issued2023-
dc.identifier.citationComposite Structures, 2023, v. 306, article no. 116572-
dc.identifier.issn0263-8223-
dc.identifier.urihttp://hdl.handle.net/10722/326379-
dc.description.abstractTo realize sufficient radial supporting capacity, currently proposed 3D-printed polymer vascular stents often have thicknesses >400 μm, much thicker than the ASTM criteria of ∼25–177 μm, which would bring the potential risk of in-stent restenosis. Here, based on high-resolution projection micro-stereolithography (PμSL) 3D printing and metal thin film deposition, we proposed the design and manufacturing of thin-walled 3D-printed composite cardiovascular stents with sufficient radial supporting ability. Firstly, negative Poisson's ratio (NPR) microlattice structure was designed and printed as the scaffold for thin-walled vascular stent, and then sputtered with gold (Au) nano thin film through radio-frequency (RF) magnetron sputtering for radial strengthening. As a result, the composite stents realized up to ∼70% radial compressive strengthening accompanied by slightly increased toughness, and a 10%–20% stent thickness reduction. With thin film gold coating, the stent can also resist 35% radial compression deformation, and showing good cytocompatibility. Finally, composite stents with wall thickness as thin as ∼150 μm and sufficient radial support ability was successfully realized. This work provides a potential solution to overcome the dilemma that thin wall thickness and sufficient radial support capacity cannot be achieved at the same time, and inspires more medical device applications based on novel 3D-printed mechanical metamaterials.-
dc.languageeng-
dc.relation.ispartofComposite Structures-
dc.subject3D printing-
dc.subjectCardiovascular stent-
dc.subjectMechanical metamaterial-
dc.subjectNegative Poisson's ratio (NPR) microlattice-
dc.subjectPolymer composite-
dc.titleDirect 3D printing of thin-walled cardiovascular stents with negative Poisson's ratio (NPR) structure and functional metallic coating-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.compstruct.2022.116572-
dc.identifier.scopuseid_2-s2.0-85144068854-
dc.identifier.volume306-
dc.identifier.spagearticle no. 116572-
dc.identifier.epagearticle no. 116572-
dc.identifier.isiWOS:000906350900001-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats