Development of Cu-Al-Mn-based superelastic guidewire with functionally graded property

Y. Sutou, T. Omori, R. Kainuma, K. Ishida, A. Furukawa, Y. Takahashi, K. Yamauchi, S. Yamashita

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A new class of medical guidewires with functionally graded properties from the tip to the end were developed using Cu-Al-Mh-based shape memory alloys (SMAs). The tip of the guidewire shows excellent superelasticity (SE), which is obtained by grain size control, while the end of the guidewire possesses high hardness and strength, which is obtained by ageing at around 200°C - 400°C. Furthermore, such characteristics from the tip to the end of the guidewire can be gradually varied by using a furnace with a temperature gradient. This guidewire with functionally graded properties shows excellent pushability and torquability and is considerably easier to handle than Ni-Ti SMA and stainless steel guidewires.

Original languageEnglish
Title of host publicationMedical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference 2003
EditorsS. Shrivastava
Pages495-500
Number of pages6
Publication statusPublished - 2003
EventMedical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference 2003 - Anaheim, CA., United States
Duration: 2003 Sept 82003 Sept 10

Publication series

NameMedical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference 2003

Conference

ConferenceMedical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference 2003
Country/TerritoryUnited States
CityAnaheim, CA.
Period03/9/803/9/10

Keywords

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

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