EP1308138A2
Expired / Lapsed
EP
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Stent
Assignee: Terumo Corp
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Filing: 2002-10-30
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Granted: —
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Expires: 2022-10-30
Abstract
Abstract A stent (2) for dilating an internal lumen includes tubular segments (12) that are arranged side by side in its axial direction. Each segment expands and contracts in the diametrical direction of the stent, and its axial length (L) is shorter than its expanded-state radius (R).
Inventors
- 👤 Masayuki Olympus Optical Co. Ltd. Iwasaka
- 👤 Hitoshi Olympus Optical Co. Ltd. Ishikawa
- 👤 Seiko Olympus Optical Co. Ltd. Yunoki
- 👤 Jun Terumo Kabushiki Kaisha Iwami
- 👤 Makoto Terumo Kabushiki Kaisha Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 12:45
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/95; A61F2/962; A61F2/966; A61F2002/9505; A61F2002/9511; A61F2220/00; A61F2220/0025; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/005
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
68 words
A stent (2, 27, 32, 38, 48, 54) for dilating
an internal lumen, comprising tubular segments (12, 28,
34, 36, 50, 60, 62) capable of expanding and
contracting in the radial direction thereof and having
an axial length (L) shorter than the expanded-state
radius (R) thereof, the segments being arranged side by
side from a distal side to a proximal side in the axial
direction of the stent.
Claim 2
Dependent Claim
40 words
A stent (2, 27, 32, 38, 48, 54) according to
claim 1, characterized by further comprises a tubular
filmy member (14, 51) located around the segments (12,
28, 34, 36, 50) and urged to expand diametrically
outward by the segments.
Claim 3
Dependent Claim
89 words
A stent (2, 27, 32, 38, 48, 54) for dilating
an internal lumen, characterized by comprising: tubular segments (12, 28, 34, 36, 50, 60, 62)
having an expanding force in the diametrical direction
of the stent and having an axial length (L) shorter
than the diametrically-expanded-state radius (R)
thereof, the segments being arranged side by side in
the axial direction; and a tubular filmy member (14, 51) capable of
expanding in the axial direction thereof, the filmy
member being attached to the segments so as to cover
the same.
Claim 4
Dependent Claim
30 words
A stent (2, 27, 32, 38, 48, 54) according to
any one of claims 1 to 3, characterized in that the filmy member (14, 51) is made from bio-absorbable
material.
Claim 5
Dependent Claim
36 words
A stent (27, 54) according to any one of
claims 1 to 4, characterized in that each of segments
(28, 60, 62) is formed of a wire having a plain-stitch
structure with reverse-side loops facing outward.
Claim 6
Dependent Claim
25 words
A stent (48) according to any one of claims 1
to 4, characterized in that each of segments (50) is
formed of a wavy wire.
Claim 7
Dependent Claim
29 words
A stent (2, 32, 38) according to any one of
claims 1 to 4, characterized in that each of segments
(12, 34, 36) is formed of a zigzagged wire.
Claim 8
Dependent Claim
43 words
A stent (54) according to any one of claims 5
to 7, characterized in that at least one of the
segments (60, 62) located individually on the extreme
distal and proximal sides is subjected to shape-memory
processing such that face-side loops face outward.
Claim 9
Dependent Claim
57 words
A stent (2) according to any one of claims 5
to 7, characterized in that one of the segments (12)
located on the extreme distal side is connected with a
pulling element (10) extending on the proximal side of
the segment on the extreme proximal side, the pulling
element being passed through the interior of the
segments.
Claim 10
Dependent Claim
34 words
A stent (2) according to claim 9, characterized in that one of the segments (12) located
on the extreme distal side is provided with a looped
member (8) connected with the pulling portion (10).
Claim 11
Dependent Claim
53 words
A stent (32, 38) according to any one of
claims 1 to 10, characterized by further comprises a
connecting portion (35, 9C) capable of connecting each
segment (34, 36) to another segment adjacent thereto
and preventing interference between the segments so
that the distal-side segment can be turned back into
the proximal-side segment.
References Cited (Backward Citations)
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