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EP0897698A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Stent with different mesh patterns

Assignee: Bolton Medical Inc
•
Filing: 1998-06-10
•
Granted: —
•
Expires: 2018-06-10
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Abstract

Abstract An expandable reinforcing member with different mesh patterns of the invention is used inside a body lumen, especially, in patient's artery for opening and holding a lesion or stenosis. The stent of the invention includes at least one large mesh portion, and a small mesh portion connected to the large mesh portion. The small mesh portion has a plurality of strands with a size smaller than that of the strands of the large mesh portion. When the stent is delivered into the artery, the small mesh portion is positioned at the lesion or the stenosis, and the large mesh portion is positioned at healthy tissues of the artery. Therefore, the small mesh portion has enough strength to open and hold the lesion or stenosis in the artery, and the large mesh portion does not hurt the healthy tissues of the artery.

Inventors

  • 👤 Nozomu Kanesaka
  • 👤 George A. Tashji

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 20:31
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/95; A61F2/958; A61F2002/91508; A61F2002/91516; A61F2002/91525; A61F2002/91533; A61F2002/91541; A61F2002/9155; A61F2002/91558; A61F2250/00; A61F2250/0014

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 63 words
An expandable reinforcing member, comprising: at least one large mesh portion located one side of the reinforcing member and having a plurality of strands, and a small mesh portion connected to the larger mesh portion, said small mesh portion having a plurality of strands with a size smaller than and a number larger than those of the strands of the large mesh portion.
Claim 2
Dependent Claim 28 words
An expandable reinforcing member according to claim 1, wherein said expandable reinforcing member includes two large mesh portions disposed at two lateral ends of the small mesh portion.
Claim 3
Dependent Claim 30 words
An expandable reinforcing member according to claim 1, wherein said reinforcing member has a cylindrical shape, and the large mesh portion is collapsible to taper from the small mesh portion.
Claim 4
Dependent Claim 72 words
An expandable reinforcing member according to claim 1, wherein said at least one larger mesh portion is formed of circularly arranged first joint members and elongated members connected to the first joint members, said smaller mesh portion being formed of plural rows of circularly arranged second joint members and plural rows of circularly arranged second elongated members, each of said first elongated members being longer than each of said second elongated members.
Claim 5
Dependent Claim 192 words
An expandable reinforcing member according to claim 4, wherein said each row of the second elongated members is situated between adjacent two rows of the second joint members and arranged circularly around a central axis of the reinforcing member, said second elongated members in each row being inclined substantially in a same direction and diagonally with an acute angle with respect to a line on a surface of the reinforcing member parallel to the central axis of the reinforcing member, each of said second elongated members connecting two of the second joint members situated in adjacent two rows of the second joint members, said second elongated members in two rows sandwiching one row of the second joint members being arranged substantially symmetrically relative to said one row of the second joint members so that when a radial force is applied from an inside of the reinforcing member, the second elongated members are expanded relative to the second joint members to have an obtuse angle with respect to said line on the surface of the reinforcing member to thereby allow the reinforcing member to have a second diameter larger than a first diameter.
Claim 6
Dependent Claim 25 words
An expandable reinforcing member according to claim 5, wherein the second diameter of the reinforcing member is about four times larger than the first diameter.

References Cited (Backward Citations)

US5776183A Cited

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