Stent
US7338530B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2003 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Nov 24, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2230/006
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A biliary stent has a number of smooth-surfaced wings extending radially outwardly from a central region and extending longitudinally along substantially the entire length of the stent. A securement barb is located at one end of the stent and extends generally radially outwardly toward a side of the stent in cantilevered fashion at an angle less than or equal to 90°. The securement barb is angled such that it presents an outward-facing half-arrowhead profile. At least one end of the stent is smoothly or conically tapered. In one embodiment, the wings extend linearly along the stent; in another embodiment, the wings extend helically along the stent. Either embodiment may have a pigtail configuration at one or both ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.