Title

DEVELOPMENT OF CU-AL-MN BASED SHAPE MEMORY ALLOYS -APPLICATION TO MEDICAL GUIDE WIRE-

DEVELOPMENT OF CU-AL-MN BASED SHAPE MEMORY ALLOYS -APPLICATION TO MEDICAL GUIDE WIRE-

Authorship

SUTOU, Y.; OMORI, T.; KAINUMA, R.; YAMAUCHI, K.; ISHIDA, K.

SUTOU, Y.

I am this author

OMORI, T.

I am this author

KAINUMA, R.

I am this author

YAMAUCHI, K.

I am this author

ISHIDA, K.

I am this author

DOI

10.5151/2594-5327-2005-14965-0162

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Abstract

A new type of medical guidewire with functionally graded characteristics from the tip to the end was developed using Cu-Al-Mn-based alloys. The superelasticity (SE) of the Cu-Al-Mn-based alloys can be drastically improved by controlling the grain size, and the present alloys were hardened by ageing at around 300oC. Based on these results, a Cu-Al-Mn-based core wire for a guidewire with a superelastic tip portion and a high rigid body portion was manufactured. This guidewire shows excellent pushability and torquability superior to those of stainless steel and Ti-Ni guidewires.

A new type of medical guidewire with functionally graded characteristics from the tip to the end was developed using Cu-Al-Mn-based alloys. The superelasticity (SE) of the Cu-Al-Mn-based alloys can be drastically improved by controlling the grain size, and the present alloys were hardened by ageing at around 300oC. Based on these results, a Cu-Al-Mn-based core wire for a guidewire with a superelastic tip portion and a high rigid body portion was manufactured. This guidewire shows excellent pushability and torquability superior to those of stainless steel and Ti-Ni guidewires.

Keywords

Shape memory alloy; Cu-Al-Mn alloy; Guidewire

Shape memory alloy; Cu-Al-Mn alloy; Guidewire