Design and Fabrication of a Thin-Walled Free-Form Scaffold on the Basis of Medical Image Data and a 3D Printed Template: Its Potential Use in Bile Duct Regeneration

Suk Hee Park, Bo-kyeong Kang, Ji Eun Lee, Seung Woo Chun, Kiseok Jang, Youn Hwan Kim, Mi Ae Jeong, Yohan Kim, Kyojin Kang, Nak Kyu Lee, Dongho Choi, Han Joon Kim

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Three-dimensional (3D) printing, combined with medical imaging technologies, such as computed tomography and magnetic resonance imaging (MRI), has shown a great potential in patient-specific tissue regeneration. Here, we successfully fabricated an ultrathin tubular free-form structure with a wall thickness of several tens of micrometers that is capable of providing sufficient mechanical flexibility. Such a thin geometry cannot easily be achieved by 3D printing alone; therefore, it was realized through a serial combination of processes, including the 3D printing of a sacrificial template, the dip coating of the biomaterial, and the removal of the inner template. We demonstrated the feasibility of this novel tissue engineering construct by conducting bile duct surgery on rabbits. Moving from a rational design based on MRI data to a successful surgical procedure for reconstruction, we confirmed that the presented method of fabricating scaffolds has the potential for use in customized bile duct regeneration. In addition to the specific application presented here, the developed process and scaffold are expected to have universal applicability in other soft-tissue engineering fields, particularly those involving vascular, airway, and abdominal tubular tissues.

Original languageEnglish
Pages (from-to)12290-12298
Number of pages9
JournalACS Applied Materials and Interfaces
Volume9
Issue number14
DOIs
StatePublished - 2017 Apr 12

Fingerprint

Forms (concrete)
Scaffolds
Ducts
Printing
Magnetic resonance
Tissue engineering
Fabrication
Imaging techniques
Tissue regeneration
Medical imaging
Biocompatible Materials
Biomaterials
Surgery
Tomography
Tissue
Coatings
Geometry

Keywords

  • 3D printing
  • bile duct reconstruction
  • customized scaffold
  • dip coating
  • medical imaging

Cite this

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abstract = "Three-dimensional (3D) printing, combined with medical imaging technologies, such as computed tomography and magnetic resonance imaging (MRI), has shown a great potential in patient-specific tissue regeneration. Here, we successfully fabricated an ultrathin tubular free-form structure with a wall thickness of several tens of micrometers that is capable of providing sufficient mechanical flexibility. Such a thin geometry cannot easily be achieved by 3D printing alone; therefore, it was realized through a serial combination of processes, including the 3D printing of a sacrificial template, the dip coating of the biomaterial, and the removal of the inner template. We demonstrated the feasibility of this novel tissue engineering construct by conducting bile duct surgery on rabbits. Moving from a rational design based on MRI data to a successful surgical procedure for reconstruction, we confirmed that the presented method of fabricating scaffolds has the potential for use in customized bile duct regeneration. In addition to the specific application presented here, the developed process and scaffold are expected to have universal applicability in other soft-tissue engineering fields, particularly those involving vascular, airway, and abdominal tubular tissues.",
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AU - Kang, Bo-kyeong

AU - Lee, Ji Eun

AU - Chun, Seung Woo

AU - Jang, Kiseok

AU - Kim, Youn Hwan

AU - Jeong, Mi Ae

AU - Kim, Yohan

AU - Kang, Kyojin

AU - Lee, Nak Kyu

AU - Choi, Dongho

AU - Kim, Han Joon

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