Multi-property nitinol by heat treatment
US6485507B1 · kind B1 · utility
174Cited by
18References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1999 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Jul 28, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0048
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Medical devices may be made of shape-memory materials portions of which have been heat treated to exhibit spatial variations in the stiffness of the material. Devices including stents, vena cava filters and guidewires may be constructed from such materials. Devices may also be made from shape-memory materials which have been locally heat treated such that the superelasticity of the treated portion is destroyed while the remainder of the shape-memory material can transition between the martensitic and austenitic states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.