EP0962194A2
Expired / Lapsed
EP
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Expandable stent having articulated connecting rods
Assignee: Medtronic Vascular Connaught
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Filing: 1999-05-28
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Granted: —
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Expires: 2019-05-28
Abstract
Abstract The invention includes systems and methods for providing stents having expandable cylindrical elements that are connected by articulated arms and connecting rods. These stents are understood to reduce the shortening that can occur as the stent is expanded from a first radial dimension to a second radial dimension.
Inventors
- 👤 Colm Mcguinness
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 09:12
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2002/91533; A61F2002/9155; A61F2002/91575; A61F2002/91583; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
129 words
An intraluminal stent for implanting in a body lumen, comprising a first cylindrical element (12, 12a 32) adapted for expanding from a first radial
dimension to a second radial dimension; a second cylindrical element (12, 12b, 32) adapted for expanding from a first radial
dimension to a second radial dimension, and being positioned adjacent and spaced away from
the first cylindrical element (12, 12a, 32) to define a longitudinal axis extending through the
first and second cylindrical elements, an articulated arm (14, 34) connecting the first and the second cylindrical elements,
and a substantially straight connecting rod (16, 38) connecting the first and the second
cylindrical elements, whereby a force acting radially outwardly may expand the stent (10, 30)
from the first radial dimension to the second radial dimension.
Claim 2
Dependent Claim
40 words
An intraluminal stent according to claim 1, wherein at least one of the first (12, 12a 32) or second (12, 12b, 32) cylindrical elements
comprises a coil having a sinusoidal shape with a plurality of peaks (18) and troughs (20).
Claim 3
Dependent Claim
43 words
An intraluminal stent according to claim 2, wherein the articulated arm (14, 34) joins at least one of the cylindrical elements (12, 12a, 12b,
32) at a point on the sinusoidal coil at a location between a peak (18) and a trough (20).
Claim 4
Dependent Claim
32 words
An intraluminal stent according to anyone of the claims 1 to 3, wherein the articulated
arm (34) further comprises a section adapted for providing increased coverage of the body
lumen tissue wall.
Claim 5
Dependent Claim
19 words
An intraluminal stent according to claim 4, wherein the expansion section comprises a
curved section (40) of deformable material
Claim 6
Dependent Claim
41 words
An intraluminal stent according to anyone of the claims 1 to 5, wherein the connecting rod (16 ,38) extends between a peak on the first cylindrical element
(12, 12a, 32) and a peak on the second cylindrical element (12, 12b, 32).
Claim 7
Dependent Claim
34 words
An intraluminal stent according to anyone of the claims 1 to 6, further comprising a graft formed about a surface defined by the first (12, 12a, 32) and second (12, 12b,
32) cylindrical elements.
Claim 8
Dependent Claim
44 words
An intraluminal stent according to anyone of the claims 1 to 7, wherein the overall
length of the stent (10, 30) in the first radial dimension is substantially the same as the overall
length of the stent (10, 30) in the second radial dimension.
Claim 9
Dependent Claim
26 words
An intraluminal stent according to anyone of the claims 1 to 8, wherein the stent (10,
30) is formed from a substantially tubular body of material.
Claim 10
Dependent Claim
26 words
An intraluminal stent according to anyone of the claims 1 to 9, wherein the stent (10,
30) is formed from a substantially flat sheet of material
Claim 11
Dependent Claim
42 words
An intravascular stent according to anyone of the claims 1 to 10, further comprising a plurality of articulated arms (14, 34) and connecting rods (16, 38) extending between
the first and second cylindrical elements, thereby defining an exterior surface having apertures
therethrough.
Claim 12
Dependent Claim
21 words
An intravascular stent according to claim 11, wherein the apertures of the exterior
surface are dimensionally adapted to provide wall support.
Claim 13
Independent Claim
90 words
A method for forming an expandable intraluminal stent, comprising the steps of providing a first cylindrical element adapted for expanding from a first radial
dimension to a second radial dimension, providing a second cylindrical element adapted for expanding from a first radial
dimension to a second radial dimension, and positioning the second cylindrical element
adjacent and spaced away from the first cylindrical element, joining an articulated arm to the first and the second cylindrical elements, and joining a substantially straight connecting rod to the first and the second cylindrical
elements.
Claim 14
Dependent Claim
38 words
A method according to claim 13, wherein the steps of providing first and second
cylindrical elements includes the steps of providing at least one cylindrical element formed of
a sinusoidal coil having a plurality of peaks and troughs.
Claim 15
Dependent Claim
50 words
A method according to claim 14, wherein the step of joining an articulated arm to the
first and the second cylindrical elements includes the step of joining the articulated arm to a point on at least one of the sinusoidal coils at a location
between a peak and a trough.
Claim 16
Independent Claim
40 words
A method according to anyone of the claims 13 to 15, wherein the step of providing an
articulated arm includes the step of providing an articulated arm having a section adapted for
providing increased coverage of an arterial vessel wall.
Claim 17
Independent Claim
48 words
A method of forming an intraluminal stent, comprising the steps of providing a sheet of biocompatible material, milling said sheet to form a pattern of sinusoidal coils columns wherein each adjacent
pair of sinusoidal coils columns is connected by an articulated arm and a substantially straight
connecting rod.
Claim 18
Dependent Claim
40 words
A method according to claim 17 including the further steps of providing said sheet of biocompatible material as a substantially flat sheet having a
first and second edge, and joining the first and second edges to form a cylindrical body.
Claim 19
Dependent Claim
23 words
A method according to claim 17 or 18, wherein the step of milling includes the step of
chemically milling the sheet of material
Claim 20
Dependent Claim
23 words
A method according to claim 17 or 18, wherein the step of milling includes the step of
laser milling the sheet of material.
References Cited (Backward Citations)
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