EP0800800B1
Expired / Lapsed
EP
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Stent for transluminal implantation in a hollow organ
Assignee: Variomed AG
•
Filing: 1996-08-29
•
Granted: 1998-07-15
•
Expires: 2016-08-29
Abstract
Abstract The stent comprises a tubular body movable from the compresses state into the expanded one of larger diameter. A large number of apertures (13,14) in the wall of the body allow its expansion. Both in the compressed and the expanded state the apertures extend in the lengthwise directions. The reinforced connecting portions (15) are situated between adjacent apertures in the lengthwise direction. The sections of wall material between the apertures can form enclosing edges for the latter, joined together in the lengthwise direction and elastic to allow stent expansion. In the peripheral direction they can be joined together by the connecting portions.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 06:39
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/02; A61F2/04; A61F2002/041; A61F2002/044; A61F2002/047; A61F2002/9155; A61F2002/91558; A61F2210/00; A61F2210/0014; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
171 words
Stent for the transluminal implantation in hollow organs, in particular
in blood vessels, ureters, oesophagi or gall tracts, comprising
a substantially tubular body (1) which has a plurality of apertures
(3, 4, 13, 14, 19) which are respectively bounded by elongate
boundary elements (5), characterised in that in each case at least
two boundary elements (5) which are arranged adjacent one another
in the peripheral direction of the stent and bound the same
aperture (3, 4, 13, 14, 19) are made so that they extend beyond the
end of the aperture (3, 4, 13, 14, 19) and form a unitary detection
element (6, 12, 18); in that the detection elements (6, 12, 18) are
made tongue-like and extend substantially in the longitudinal direction
of the stent; in that the detection elements (6, 12, 18) have
a greater width in the circumferential direction of the stent than
each of the boundary elements (5); and in that the detection elements
(6, 12, 18) are provided at least at one end of the stent.
Claim 2
Dependent Claim
57 words
Stent in accordance with claim 1, characterised in that, over essentially
the entire periphery of the stent, respective pairs of adjacently
arranged boundary elements (5) each form a detection element
(12) with the width of the detection element (12) being in
particular substantially the same as the width of two boundary
elements (5) lying alongside one another.
Claim 3
Dependent Claim
71 words
Stent in accordance with claim 1, characterised in that alternating
pairs of adjacently disposed boundary elements (5) in the circumferential
direction each form a detection element (6), whereas the
following two boundary elements (5) are not extended beyond the
end of the aperture (3) they bound, with the width of the detection
element (6) being in particular the same as the width of four
boundary elements (5) lying alongside one another.
Claim 4
Dependent Claim
27 words
Stent in accordance with one of the claims 1 to 3, characterised in
that detection elements (6, 12, 18) are provided at both ends of the
stent.
Claim 5
Dependent Claim
40 words
Stent in accordance with one of the preceding claims, characterised
in that the detection element (6, 12, 18) is made at least substantially
twice as wide in the circumferential direction of the stent
as each of the boundary elements (5).
Claim 6
Dependent Claim
33 words
Stent in accordance with claim 5, characterised in that the detection
element (12) is made substantially twice as wide in the circumferential
direction of the stent as each of the boundary elements
(5).
Claim 7
Dependent Claim
39 words
Stent in accordance with one of the claims 1 to 5, characterised in
that the detection element (6) is made substantially four times as
wide in the circumferential direction of the stent as each of the
boundary elements (5).
Claim 8
Dependent Claim
33 words
Stent in accordance with one of the preceding claims, characterised
in that the free ends of the detection elements (6, 12, 18) have
no sharp-edged sections and are in particular of rounded shape.
Claim 9
Dependent Claim
58 words
Stent in accordance with one of the preceding claims, characterised
in that the length of the detection elements (6, 12, 18) in each
case amounts to between 25 and 200 %, in particular to between
35 and 150 %, and preferably to between 50 and 100 % of the
length of an aperture (3, 4, 13, 14, 19).
Claim 10
Dependent Claim
37 words
Stent in accordance with one of the preceding claims, characterised
in that the tubular body (1) is transferable from a compressed
state with a first cross-sectional diameter into an expanded state
with an enlarged, second, cross-sectional diameter.
Claim 11
Dependent Claim
26 words
Stent in accordance with claim 10, characterised in that the apertures
(3, 4, 19) are made as slot-like openings in the compressed
state of the stent.
Claim 12
Dependent Claim
79 words
Stent in accordance with claim 10, characterised in that the apertures
(13, 14) which ensure the expansion are formed both in the
compressed state and also in the expanded state as areal apertures
which are extended in the longitudinal direction and in the circumferential
direction of the stent; and in that connection locations
(15) of thickened design are provided in the region between
two apertures (13, 14) arranged adjacent to one another in the longitudinal
direction of the stent.
Claim 13
Dependent Claim
64 words
Stent in accordance with one of the preceding claims, characterised
in that the material of the wall of the tubular body (1) lying
between the apertures 83, 4, 13, 14, 19) forms frame elements (20)
for the apertures (3, 4, 13, 14, 19) which are connected together in
the longitudinal direction of the stent and can be dilated for the
expansion of the stent.
Claim 14
Dependent Claim
42 words
Stent in accordance with claim 13, characterised in that each
frame element (20) comprises at least two elongate boundary elements
(5) arranged adjacent to one another in the circumferential
direction of the stent which are connected together at the connection
locations (15).
Claim 15
Dependent Claim
40 words
Stent in accordance with one of the claims 12 to 14, characterised
in that the connection locations (15) of reinforced design are
formed by broadened regions (16) of the boundary elements (5) extending
in the circumferential direction of the stent.
Claim 16
Dependent Claim
32 words
Stent in accordance with one of the preceding claims, characterised
in that the apertures (13, 14) have a narrower width at their
ends (17) than in the region between the ends (17).
Claim 17
Dependent Claim
35 words
Stent in accordance with one of the claims 10 to 16, characterised
in that the apertures (13, 14) are formed so that they extend tapering
towards their ends in the compressed state of the stent.
Claim 18
Dependent Claim
40 words
Stent in accordance with one of the claims 15 to 17, characterised
in that the wall thickness of the tubular body (1) is at least substantially
the same as the width of the boundary elements (5) in
their non-broadened regions.
Claim 19
Dependent Claim
46 words
Stent in accordance with one of the preceding claims, characterised
in that the wall thickness of the tubular body (1) amounts to
between 0.15 mm and 0.30 mm, in particular to between 0.18 mm
and 0.27 mm, and preferably to between 0.2 mm and 0.24 mm.
Claim 20
Dependent Claim
48 words
Stent in accordance with one of the preceding claims 15 to 19,
characterised in that the width of the boundary elements (5)
amounts in its non-broadened regions to between 0.15 mm and
0.25 mm, in particular to between 0.18 and 0.22 mm, and preferably
to ca. 0.2 mm.
Claim 21
Dependent Claim
47 words
Stent in accordance with one of the claims 15 to 20, characterised
in that the width of the boundary elements (5) in their broadened
regions amounts to between 0.25 mm and 0.35 mm, in particular
to between 0.28 and 0.32 mm, and preferably to ca. 0.3 mm.
Claim 22
Dependent Claim
48 words
Stent in accordance with one of the claims 12 to 21, characterised
in that the detection element (18) has, in the circumferential direction
of the stent, essentially the width of two boundary elements (5)
plus the width of the aperture (13, 14) bounded by the boundary
elements (5).
References Cited (Backward Citations)
No citation records indexed.
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