Development of a subpath extrusion tip and die for peripheral inserted central catheter shaft with multi lumen

Han Chang Lee, Jinhyuk Jeong, Seunggi Jo, Dong Yun Choi, Gyu Man Kim, Woojin Kim

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The tip and die for manufacturing multi-lumen catheter tubes should be designed consid-ering the flow velocity of the molten polymer and the deformation of the final extruded tube. In this study, to manufacture non-circular double-lumen tubes for peripherally inserted central catheters (PICCs), three types of tip and die structures are proposed. The velocity field and swelling effect when the circular tip and die (CTD) are applied, which is the commonly used tip and die structure, are analyzed through numerical calculation. To resolve the wall and rib thickness and ovality issues, the ellipse tip and die (ETD) and sub-path tip and die (STD) were proposed. In addition, based on the results of numerical analysis, the tip and die structures were manufactured and used to perform extrusion. Finally, we manufactured tubes that satisfied the target diameter, ovality, wall, and rib thickness using the newly proposed STD.

Original languageEnglish
Article number1308
JournalPolymers
Volume13
Issue number8
DOIs
StatePublished - 2 Apr 2021

Keywords

  • Multi lumen
  • Numerical analysis
  • Peripherally inserted central venous catheter
  • Polymer extrusion
  • Polymer flow
  • Viscosity

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