Heat-treated tantalum-alloy products, implantable medical devices incorporating same, and methods of processing tantalum-alloy products
US8790393B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2011 |
| Grant date | Jul 29, 2014 |
| Priority date | — |
| Expiry date | Jan 31, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L31/14
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present disclosure is directed to tantalum-alloy products, implantable medical devices that incorporate tantalum-alloy products such as stents or other implantable medical devices, methods of making and/or processing the tantalum-alloy products and implantable medical devices, and methods of using the implantable medical devices. In an embodiment, a stent includes a stent body having a plurality of struts. At least a portion of the stent body is made from a tantalum alloy. The tantalum alloy includes a tantalum content of about 77 weight % (“wt %”) to about 92 wt %, a niobium content of about 7 wt % to about 13 wt %, and a tungsten content of about 1 wt % to about 10 wt %. The tantalum alloy exhibits at least one mechanical property modified by heat treatment thereof, such as yield strength, ultimate tensile strength, or ductility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.