Patent · US Active

Stent graft tapered spring

US7846195B2 · kind B2 · utility

5Cited by

10References

3Claims

0Family size

Assignee

Medtronic Vascular, Inc. · US

Inventors

Humberto Berra · Sunrise, US
Michel Letort · Ferney-Voltaire, FR

Key dates

Filing date	Sep 4, 2007
Grant date	Dec 7, 2010
Priority date	—
Expiry date	Sep 10, 2029

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F2250/0029
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A stent graft includes a stent graft material of cylindrical shape and tapered stent springs coupled to the stent graft material. Each stent spring includes a first stent cell and a second stent cell contiguous with the first stent cell. The first stent cell and the second stent cell are coupled. The second stent cell of each tapered stent spring is smaller than the first stent cell thereby defining a tapered shape to the tapered stent springs. The stent graft is placed in a curved segment of a tortuous body lumen and rotationally positioned such that the smallest stent cell of each tapered stent spring is placed at an inside radius of the curved segment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.