Development of Medical Guide Wire of Cu-Al-Mn-Base Superelastic Alloy with Functionally Graded Characteristics

Yuji Sutou, Toshihiro Omori, Akihisa Furukawa, Yukinori Takahashi, Ryosuke Kainuma, Kiyoshi Yamauchi, Shuzo Yamashita, Kiyohito Ishida

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

A new type of medical guide wire with functionally graded hardness from the tip to the end was developed with the use of Cu-Al-Mn-based alloys. The superelasticity (SE) of the Cu-Al-Mn-based alloys in the tip is drastically improved by controlling the grain size, whereas the end of the wire is hardened using bainitic transformation by aging at around 200-400 °C. Therefore, the tip of the guide wire shows a superelasticity and its end has high stiffness. This guide wire with functionally graded characteristics shows excellent pushability and torquability, superior to that of the Ni-Ti guide wire.

Original languageEnglish
Pages (from-to)64-69
Number of pages6
JournalJournal of Biomedical Materials Research - Part B Applied Biomaterials
Volume69
Issue number1
DOIs
Publication statusPublished - 2004 Apr 15

Keywords

  • Bainitic transformation
  • Cu-Al-Mn-based shape memory alloy
  • Guide wire
  • High stiffness
  • Superelasticity

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering

Fingerprint Dive into the research topics of 'Development of Medical Guide Wire of Cu-Al-Mn-Base Superelastic Alloy with Functionally Graded Characteristics'. Together they form a unique fingerprint.

Cite this