US20090248132A1
Active / In Force
US
⏱️ 1.4 years remaining
Double-Walled Stent System
Assignee: Medtronic Vascular Inc
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Filing: 2008-04-01
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Granted: —
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Expires: 2028-04-01
Abstract
Abstract A double walled stent system particularly suited for treating abnormalities of the right ventricular outflow tract is disclosed having an exterior stent component and an interior stent component. The exterior stent component includes a plurality of longitudinally-extending connectors such as straight or sinusoidal bands. The interior stent component has a generally tubular cylindrical body and is centered within the exterior stent component. The stent system has a contracted delivery configuration and a radially expanded configuration for contacting the vessel wall. When deployed, the longitudinally-extending connectors of the exterior stent component come in contact with the vessel wall and fix the stent system to the treatment site. The interior stent component also radially expands but remains centered inside the exterior component and makes little to no contact with the vessel wall.
Inventors
- 👤 Eliot Bloom
- 👤 Gian Pellegrini
- 👤 Juan-Pablo Mas
- 👤 Nasser Rafiee
- 👤 Morgan House
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:08
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; A61F2/82; A61F2/852; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2002/823; A61F2002/825; A61F2002/828; A61F2002/9155; A61F2002/91558; A61F2002/91591; A61F2220/00; A61F2220/0025; A61F2220/0058; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013; A61F2230/0028; A61F2230/0054; A61F2230/0063; A61F2230/0071; A61F2230/0073; A61F2230/0076; A61F2250/00; A61F2250/0014; A61F2250/0037; A61F2250/0058; A61F2250/006; A61F2250/0063; A61F2250/0082
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
128 words
1 . A stent system for use within a body lumen, the system comprising: an interior stent component having a proximal end, a distal end, and a generally tubular cylindrical body defining a central flow lumen there through; and an exterior stent component including a plurality of longitudinally-extending connectors, wherein the proximal and distal ends of the interior stent component are attached to the exterior stent component such that the longitudinally-extending connectors are radially positioned around the tubular body of the interior stent component, wherein when the stent system is in an expanded configuration the longitudinally-extending connectors of the exterior stent component are configured to bow radially outward against a vessel wall of the body lumen while the interior stent component remains radially positioned within the longitudinally-extending connectors.
Claim 2
Dependent Claim
128 words
1 . A stent system for use within a body lumen, the system comprising: an interior stent component having a proximal end, a distal end, and a generally tubular cylindrical body defining a central flow lumen there through; and an exterior stent component including a plurality of longitudinally-extending connectors, wherein the proximal and distal ends of the interior stent component are attached to the exterior stent component such that the longitudinally-extending connectors are radially positioned around the tubular body of the interior stent component, wherein when the stent system is in an expanded configuration the longitudinally-extending connectors of the exterior stent component are configured to bow radially outward against a vessel wall of the body lumen while the interior stent component remains radially positioned within the longitudinally-extending connectors.
Claim 3
Dependent Claim
37 words
2 . The stent system of claim 1 , wherein foreshortening of the interior stent component occurs between an unexpanded configuration and the expanded configuration of the stent system to control radial expansion of the longitudinally-extending connectors.
Claim 4
Dependent Claim
46 words
3 . The stent system of claim 1 , wherein in the expanded configuration the longitudinally-extending connectors of the exterior stent component undergo greater radial expansion than the interior stent component such that the interior stent component makes little to no contact with the vessel wall.
Claim 5
Dependent Claim
66 words
4 . The stent system of claim 1 , wherein a proximal end of each longitudinally-extending connector is attached to the proximal end of the interior stent component and a distal end of each longitudinally-extending connector is attached to the distal end of the interior stent component such that the interior stent component is longitudinally centered between the proximal and distal ends of the longitudinally-extending connectors.
Claim 6
Dependent Claim
95 words
5 . The stent system of claim 1 , wherein the exterior stent component includes a proximal stent strut and a distal stent strut joined via the plurality of longitudinally-extending connectors, and wherein the proximal end of the interior stent component is attached to the proximal stent strut of the exterior stent component and the distal end of the interior stent component is attached to the distal stent strut of the exterior stent component such that the interior stent component is longitudinally centered between the proximal and distal stent struts of the exterior stent component.
Claim 7
Dependent Claim
71 words
6 . The stent system of claim 5 , wherein the proximal end of the interior stent component is welded to the proximal stent strut of the exterior stent component and the distal end of the interior stent component is welded to the distal stent strut of the exterior stent component, and the longitudinally-extending connectors of the exterior stent component remain detached from the tubular body of the interior stent component.
Claim 8
Dependent Claim
90 words
7 . The stent system of claim 5 , further including: a plurality of tabs formed on each of the proximal end and the distal end of the interior stent component; and a plurality of receptacles formed on an innermost end of each of the proximal stent strut and the distal stent strut of the exterior stent component, wherein each of the receptacles is configured to receive a corresponding tab, wherein the plurality of tabs are positioned within the plurality of receptacles to connect the exterior and interior stent components.
Claim 9
Dependent Claim
17 words
8 . The stent system of claim 7 , wherein each tab and receptacle is welded together.
Claim 10
Dependent Claim
18 words
9 . The stent system of claim 7 , wherein each tab and receptacle is cryogenically coupled together.
Claim 11
Dependent Claim
46 words
10 . The stent system of claim 5 , wherein the exterior stent component includes a first flared stent strut attached to a proximal end of the proximal stent strut and a second flared stent strut attached to a distal end of the distal stent strut.
Claim 12
Dependent Claim
32 words
11 . The stent system of claim 10 , wherein the first and second flared stent struts form approximately a twenty degree angle with a longitudinal axis of the exterior stent component.
Claim 13
Dependent Claim
24 words
12 . The stent system of claim 1 , wherein the longitudinally-extending connectors are generally straight bands of material along an entire length thereof.
Claim 14
Dependent Claim
37 words
13 . The stent system of claim 12 , wherein a first longitudinally-extending connector has a first width and a second longitudinally-extending connector has a second width, wherein the first width is greater than the second width.
Claim 15
Dependent Claim
23 words
14 . The stent system of claim 1 , wherein at least one of the longitudinally-extending connectors includes a sinusoidal section of material.
Claim 16
Dependent Claim
26 words
15 . The stent system of claim 14 , wherein the at least one longitudinally-extending connector includes a plurality of sinusoidal sections separated by straight sections.
Claim 17
Dependent Claim
25 words
16 . The stent system of claim 1 , wherein the longitudinally-extending connectors extend generally parallel to a longitudinal axis of the exterior stent component.
Claim 18
Dependent Claim
26 words
17 . The stent system of claim 1 , wherein the longitudinally-extending connectors are angled with respect to a longitudinal axis of the exterior stent component.
Claim 19
Dependent Claim
27 words
18 . The stent system of claim 1 , wherein the longitudinally-extending connectors extend in a helical fashion around a longitudinal axis of the exterior stent component.
Claim 20
Dependent Claim
24 words
19 . The stent system of claim 1 , further comprising: a tether laterally connecting a first longitudinally-extending connector and a second longitudinally-extending connector.
Claim 21
Dependent Claim
38 words
20 . The stent system of claim 1 , further comprising: a valve located within the central flow lumen of the interior stent component, wherein nonporous graft material covers at least a portion of the interior stent component.
Claim 22
Dependent Claim
160 words
21 . A stent system for use within a body lumen, the system comprising: an interior stent component including a proximal portion and a distal portion; and an exterior stent component including a first set of longitudinally-extending connectors and a second set of longitudinally-extending connectors, wherein the first set of longitudinally-extending connectors are attached to the proximal portion of the interior stent component and the second set of longitudinally-extending connectors are attached to the distal section of the interior stent component such that the first and second sets of longitudinally-extending connectors are radially positioned around the first and second portions of the interior stent component, respectively, wherein the first and second sets of longitudinally-extending connectors of the exterior stent component are configured to bow radially outward against a vessel wall of the body lumen and the interior stent component is radially positioned within the longitudinally-extending connectors of the exterior stent component when the stent system is in an expanded configuration.
Claim 23
Dependent Claim
160 words
21 . A stent system for use within a body lumen, the system comprising: an interior stent component including a proximal portion and a distal portion; and an exterior stent component including a first set of longitudinally-extending connectors and a second set of longitudinally-extending connectors, wherein the first set of longitudinally-extending connectors are attached to the proximal portion of the interior stent component and the second set of longitudinally-extending connectors are attached to the distal section of the interior stent component such that the first and second sets of longitudinally-extending connectors are radially positioned around the first and second portions of the interior stent component, respectively, wherein the first and second sets of longitudinally-extending connectors of the exterior stent component are configured to bow radially outward against a vessel wall of the body lumen and the interior stent component is radially positioned within the longitudinally-extending connectors of the exterior stent component when the stent system is in an expanded configuration.
Claim 24
Dependent Claim
59 words
22 . The stent system of claim 21 , wherein the proximal portion of the interior stent component is configured to foreshorten a different amount than the distal portion of the interior stent component such that there is a difference in the height of expansion between the first set of longitudinally-extending connectors and the second set of longitudinally-extending connectors.
Claim 25
Dependent Claim
175 words
23 . A stent system for use within a body lumen, the system comprising: an interior stent component having a proximal end, a distal end, and a generally tubular cylindrical body defining a central flow lumen there through; and an exterior stent component including a proximal stent strut, a distal stent strut and an intermediate stent strut, wherein the proximal stent strut is joined via a first set of longitudinally-extending connectors to the intermediate stent section and the distal stent strut is joined to the intermediate stent section by a second set of longitudinally-extending connectors, wherein the proximal end of the interior stent component is attached to the proximal stent strut of the exterior stent component and the distal end of the interior stent component is attached to the distal stent strut of the exterior stent component, such that the interior stent component is longitudinally positioned between the proximal and distal stent struts of the exterior stent component and radially positioned within the longitudinally-extending connectors and the intermediate stent strut of the exterior stent component.
Claim 26
Dependent Claim
175 words
23 . A stent system for use within a body lumen, the system comprising: an interior stent component having a proximal end, a distal end, and a generally tubular cylindrical body defining a central flow lumen there through; and an exterior stent component including a proximal stent strut, a distal stent strut and an intermediate stent strut, wherein the proximal stent strut is joined via a first set of longitudinally-extending connectors to the intermediate stent section and the distal stent strut is joined to the intermediate stent section by a second set of longitudinally-extending connectors, wherein the proximal end of the interior stent component is attached to the proximal stent strut of the exterior stent component and the distal end of the interior stent component is attached to the distal stent strut of the exterior stent component, such that the interior stent component is longitudinally positioned between the proximal and distal stent struts of the exterior stent component and radially positioned within the longitudinally-extending connectors and the intermediate stent strut of the exterior stent component.
Claim 27
Dependent Claim
21 words
24 . The stent system of claim 23 , wherein each of the longitudinally-extending connectors includes a sinusoidal section of material.
Claim 28
Dependent Claim
65 words
25 . The stent system of claim 23 , wherein in an expanded configuration the longitudinally-extending connectors and the intermediate stent strut of the exterior stent component undergo greater radial expansion than the interior stent component such that the interior stent component remains positioned within the exterior stent component when radially expanded and makes little to no contact with a wall of the body lumen.
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