Process development for high-resolution 3D-printing of bioresorbable vascular stents

Henry Oliver T. Ware*, Adam C. Farsheed, Robert Van Lith, Evan Baker, Guillermo Ameer, Cheng Sun

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

The recent development of "continuous projection microstereolithography" also known as CLIP technology has successfully alleviated the main obstacles surrounding 3D printing technologies: Production speed and part quality. Following the same working principle, we further developed the μCLIP process to address the needs for high-resolution 3D printing of biomedical devices with micron-scale precision. Compared to standard stereolithography (SLA) process, μCLIP fabrication can reduce fabrication time from several hours to as little as a few minutes. μCLIP can also produce better surface finish and more uniform mechanical properties than conventional SLA, as each individual "fabrication layer" continuously polymerizes into the subsequent layer. In this study, we report the process development in manufacturing high-resolution bioresorbable stents using our own μCLIP system. The bioresorbable photopolymerizable biomaterial (B-ink) used in this study is methacrylated poly(1, 12 dodecamethylene citrate) (mPDC). Through optimization of our μCLIP process and concentration of B-ink components, we have created a customizable bioresorbable stent with similar mechanical properties exhibited by nitinol stents. Upon optimization, fabricating a 2 cm tall vascular stent that comprises 4000 layers was accomplished in 26.5 minutes.

Original languageEnglish (US)
Title of host publicationAdvanced Fabrication Technologies for Micro/Nano Optics and Photonics X 2017
EditorsWinston V. Schoenfeld, Georg von Freymann, Raymond C. Rumpf
PublisherSPIE
ISBN (Electronic)9781510606715
DOIs
StatePublished - Jan 1 2017
EventAdvanced Fabrication Technologies for Micro/Nano Optics and Photonics X 2017 - San Francisco, United States
Duration: Jan 29 2017Feb 1 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10115
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherAdvanced Fabrication Technologies for Micro/Nano Optics and Photonics X 2017
CountryUnited States
CitySan Francisco
Period1/29/172/1/17

Keywords

  • 3D Printing
  • Bioresorbable Vascular Stent
  • μCLIP

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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