Title:
分岐したステント移植片
Document Type and Number:
Japanese Patent JP4198785
Kind Code:
B2
Abstract:
A bifurcated stent graft (18, 92, 122, 130, 144) implantable in branched internal passageways includes an open-frame stent latticework (34, 94, 126, 146) formed of helically wound structural strands (36), and a graft sleeve (40, 110, 124, 132, 150, 152) formed of interwoven textile strands (60). The sleeve is substantially impervious to fluids and is adjustable along with the graft between a nominal state and radially-reduced axially-elongated state, according to substantially the same relationship of radial reduction versus axial elongation. The sleeve and stent are bonded to one another at least at proximal and distal end regions of the stent graft. The sleeve preferably is surrounded by the stent, and incorporates a flow dividing feature in the form of an axially extending seam (56, 112, 114, 134, 136). The seam brings together portions of the sleeve that otherwise would be circumferentially spaced apart in the tubular sleeve shape. The stent latticework and graft sleeve can be coextensive, the sleeve can extend distally beyond the latticework, or the latticework can extend proximally beyond the sleeve, depending on the intended use. In other alternative embodiments, the sleeve can surround the latticework.
Inventors:
Paul Jay Thompson
George W du
George W du
Application Number:
JP14641498A
Publication Date:
December 17, 2008
Filing Date:
May 27, 1998
Export Citation:
Assignee:
Boston Scientific Simed Incorporated
International Classes:
A61F2/90; A61F2/06
Foreign References:
| WO1997017039A1 | ||||
| WO1995009586A1 | ||||
| WO1997017913A1 |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Yutaka Matsutomi
Kazuya Nishi
Kenichi Imamura
Yasuhiko Murayama
Mitsuru Oba
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Yutaka Matsutomi
Kazuya Nishi
Kenichi Imamura
Yasuhiko Murayama
Mitsuru Oba