US6280467B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delivery system for deployment and endovascular assembly of a multi-stage stented graft
Assignee: Medtronic Vascular Inc
•
Filing: 1999-02-25
•
Granted: 2001-08-28
•
Expires: 2019-02-25
Abstract
Abstract A multi-stage stent graft for implantation into a blood vessel is disclosed. Each stage or layer may comprise radially compressible spring stents with or without a fabric covering, or may comprise a foamed tube. The various stages or layers may also have an adhesive coated thereon. The multi-stage stented graft and the adhesive coatings provide a surface for the in growth of cells and promote healing. Also disclosed is a coaxial delivery system for the delivery and endovascular assembly of the multi-stage stented graft during one trip into the vasculature.
Inventors
- 👤 Howard J. Leonhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:22
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/82; A61F2/86; A61F2/90; A61F2/95; A61F2/9517; A61F2/89; A61F2002/075; A61F2002/825; A61F2002/828; A61F2210/00; A61F2210/0076; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2220/0025; A61F2220/0058; A61F2220/0066; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
102 words
A stent device, which comprises: a) a support frame having a first support stent spaced apart from a second support stent, wherein said first support stent is connected to said second support stent by at least one connecting wire; b) a tubular graft comprising a graft material formed into a tubular shape, wherein said tubular graft is disposed to surround a portion of both said first support stent and said second support stent; and c) a scaffolding stent separate from and unconnected to said support frame and positioned within said tubular graft intermediate said first support stent and said second support stent.
Claim 2
Dependent Claim
102 words
A stent device, which comprises: a) a support frame having a first support stent spaced apart from a second support stent, wherein said first support stent is connected to said second support stent by at least one connecting wire; b) a tubular graft comprising a graft material formed into a tubular shape, wherein said tubular graft is disposed to surround a portion of both said first support stent and said second support stent; and c) a scaffolding stent separate from and unconnected to said support frame and positioned within said tubular graft intermediate said first support stent and said second support stent.
Claim 3
Dependent Claim
27 words
The stent device of claim 1 wherein said graft material is a synthetic material selected from the group consisting of polyester, polytetrafluoroethylene, microporous urethane, nylon, and lycra.
Claim 4
Dependent Claim
20 words
The stent device of claim 1 wherein said graft material is characterized as having been subjected to a photopolymerization process.
Claim 5
Dependent Claim
16 words
The stent device of claim 1 wherein said graft material is a cryogenically preserved biological material.
Claim 6
Dependent Claim
15 words
The stent device of claim 1 wherein said graft material is an umbilical cord vein.
Claim 7
Dependent Claim
17 words
The stent device of claim 1 wherein said support frame and said scaffolding stent are of Nitinol.
Claim 8
Dependent Claim
28 words
The stent device of claim 1 wherein said first support stent and said second support stent and said connecting wire of said support frame are a unitary member.
Claim 9
Dependent Claim
17 words
The stent device of claim 1 wherein said scaffolding stent comprises at least two stents connected together.
Claim 10
Dependent Claim
17 words
The stent device of claim 1 wherein said graft material includes a plurality of spaced apart flaps.
Claim 11
Dependent Claim
43 words
The stent device of claim 9 , wherein said first support stent and said second support stent include peaks and troughs located at ends of said first support stent and said second support stent, wherein said flaps are oriented to cover said peaks.
Claim 12
Dependent Claim
16 words
The stent device of claim 1 wherein said scaffolding stent is enclosed in a thin covering.
Claim 13
Dependent Claim
33 words
The stent device of claim 1 further comprising: d) a third stage stent, placed within both said support frame and said scaffolding stent to overlap both said support frame and said scaffolding stent.
Claim 14
Dependent Claim
22 words
The stent device of claim 1 wherein said scaffolding stent includes an adhesive applied thereto to facilitate attachment to said graft material.
Claim 15
Dependent Claim
38 words
The stent device of claim 1 , further comprising a second tubular graft comprising a second graft material formed into a tubular shape, wherein said second tubular graft is disposed to surround a portion of said scaffolding stent.
Claim 16
Dependent Claim
35 words
The stent device of claim 14 , wherein said second tubular graft material is less permeable than said tubular graft material surrounding a portion of both said first support stent and said second support stent.
Claim 17
Dependent Claim
36 words
The stent device of claim 14 , wherein said second tubular graft material is a different material than said tubular graft material surrounding a portion of both said first support stent and said second support stent.
Claim 18
Dependent Claim
36 words
The stent device of claim 16 , wherein said second tubular graft material is stretchable and said tubular graft material surrounding a portion of both said first support stent and said second support stent is non-stretchable.
Claim 19
Dependent Claim
25 words
The stent device of claim 1 , wherein said graft material is fixed to said first support stent and said second support stent by sewing.
Claim 20
Dependent Claim
22 words
The stent device of claim 1 , wherein said connecting wire longitudinally connects said first support stent and said second support stent.
Claim 21
Dependent Claim
42 words
The stent device of claim 1 , wherein said connecting wire and said first support stent and said second support stent are comprised of a single wire having terminal ends, wherein said terminal ends are secured in place by a metal band.
Claim 22
Dependent Claim
88 words
A stent comprising: a) a hollow foamed tube; b) a support frame having a first support stent spaced apart from a second support stent, said first support stent and said second support stent being connected to each other by at least one connecting wire and disposed within said hollow foamed tube; and c) a scaffolding stent separate from and unconnected to said support frame, said scaffolding stent being positioned intermediate said first support stent and said second support stent of said support frame in said hollow foamed tube.
Claim 23
Dependent Claim
88 words
A stent comprising: a) a hollow foamed tube; b) a support frame having a first support stent spaced apart from a second support stent, said first support stent and said second support stent being connected to each other by at least one connecting wire and disposed within said hollow foamed tube; and c) a scaffolding stent separate from and unconnected to said support frame, said scaffolding stent being positioned intermediate said first support stent and said second support stent of said support frame in said hollow foamed tube.
Claim 24
Dependent Claim
16 words
The stent of claim 21 wherein said scaffolding stent comprises at least two stents connected together.
Claim 25
Dependent Claim
36 words
The stent of claim 21 further comprising a third scaffolding stent, disposed within both said support frame and said scaffolding stent to overlap at least a portion of both said support frame and said scaffolding stent.
Claim 26
Dependent Claim
31 words
The stent of claim 21 wherein an adhesive is applied to an external surface of said hollow foamed tube to form a tight seal with the wall of a blood vessel.
Claim 27
Dependent Claim
11 words
The stent of claim 24 wherein said adhesive is fibrin glue.
Claim 28
Dependent Claim
28 words
The stent of claim 21 , wherein said first support stent, said second support stent, and said connecting wire of said support frame are of a unitary member.
Claim 29
Dependent Claim
19 words
The stent of claim 21 , wherein said hollow foamed tube is formed of a closed cell thermoplastic material.
Claim 30
Dependent Claim
21 words
The stent of claim 21 , wherein said connecting wire longitudinally connects said first support stent and said second support stent.
Claim 31
Dependent Claim
14 words
The stent of claim 28 , wherein said connecting wire is a Nitinol wire.
Claim 32
Dependent Claim
41 words
The stent of claim 21 , wherein said connecting wire and said first support stent and said second support stent are comprised of a single wire having terminal ends, wherein said terminal ends are secured in place by a metal band.
Claim 33
Dependent Claim
144 words
A stent device comprising: a) a tubular graft having a first open end and a second open end, said graft being made of a graft material, b) a support frame having a first support stent disposed at and fixed to an annular wall of said tubular graft at a first end of said tubular graft, said support frame having a second support stent disposed at and fixed to said annular wall of said tubular graft at a second end of said tubular graft, wherein said first support stent is spaced apart from said second support stent and wherein said first support stent is connected to said second support stent by at least one connecting wire; and c) a scaffolding stent separate from and unconnected to said support frame and positioned within said tubular graft intermediate said first support stent and said second support stent.
Claim 34
Dependent Claim
144 words
A stent device comprising: a) a tubular graft having a first open end and a second open end, said graft being made of a graft material, b) a support frame having a first support stent disposed at and fixed to an annular wall of said tubular graft at a first end of said tubular graft, said support frame having a second support stent disposed at and fixed to said annular wall of said tubular graft at a second end of said tubular graft, wherein said first support stent is spaced apart from said second support stent and wherein said first support stent is connected to said second support stent by at least one connecting wire; and c) a scaffolding stent separate from and unconnected to said support frame and positioned within said tubular graft intermediate said first support stent and said second support stent.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-08-27 | 2005-02-26 | 2005-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-08-27 | 2009-02-26 | 2009-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-08-27 | 2013-02-26 | 2013-08-28 | $7700.00 | Window Closed / Lapsed |