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 language | English |
|---|---|
| Title of host publication | Medical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference 2003 |
| Editors | S. Shrivastava |
| Pages | 495-500 |
| Number of pages | 6 |
| Publication status | Published - 2003 Dec 1 |
| Event | Medical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference 2003 - Anaheim, CA., United States Duration: 2003 Sep 8 → 2003 Sep 10 |
Other
| Other | Medical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference 2003 |
|---|---|
| Country/Territory | United States |
| City | Anaheim, CA. |
| Period | 03/9/8 → 03/9/10 |
Keywords
- Bainitic transformation
- Cu-Al-Mn-based shape memory alloy
- Guidewire
- High stiffness
- Superelasticity
ASJC Scopus subject areas
- Engineering(all)