Multi-property nitinol by heat treatment
US6997947B2 · kind B2 · utility
14Cited by
24References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2002 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Sep 11, 2023 |
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.