US6283991B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoluminal prostheses and therapies for highly variable body lumens
Assignee: Medtronic Vascular Inc
•
Filing: 1998-07-22
•
Granted: 2001-09-04
•
Expires: 2018-07-22
Abstract
Abstract The present invention provides a branching endoluminal prosthesis for use in branching body lumen systems which includes a trunk lumen and first and second branch lumens. The prostheses comprises a radially expandable tubular trunk portion having a prosthetic trunk lumen, and radially expandable tubular first and second branch portions with first and second prosthetic branch lumens, respectively. A radially expandable tubular Y-connector portion provides fluid communication between the prosthetic trunk lumen and the first and second prosthetic branch lumens. Although it is often considered desirable to maximize the column strength of endoluminal prostheses, and although the trunk portion will generally have a larger cross-section than much of the remainder of a branching endoluminal prostheses, the expanded trunk portion is more axially flexible than the expanded Y-connector portion, as insufficient flexibility along the trunk portion may result in leakage between the prosthesis and the trunk lumen of the body lumen system. In contrast, the Y-connector portion benefits form a less axially flexible structure to avoid distortion of the flow balance between the luminal branches.
Inventors
- 👤 Brian Cox
- 👤 Michael A. Evans
- 👤 Allan Will
- 👤 Jay A. Lenker
- 👤 Steven W. Kim
- 👤 Kirsten Freislinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:33
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/88; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/90; A61F2/91; A61L; A61L27/00; A61L27/28; A61L27/34; A61L31/00; A61L31/08; A61L31/10; A61L31/14; A61L31/18; A61F2/848; A61F2/885; A61F2/89; A61F2/915; A61F2/92; A61F2/95; A61F2/954; A61F2/958; A61F2002/041; A61F2002/044; A61F2002/046; A61F2002/047; A61F2002/048; A61F2002/065; A61F2002/075; A61F2/30; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30316; A61F2002/30317; A61F2002/30327; A61F2002/30535; A61F2002/30604; A61F2002/828; A61F2220/00; A61F2220/0025; A61F2220/0041; A61F2220/005; A61F2220/0058; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/001; A61F2230/0028; A61F2230/0054; A61F2230/0063; A61F2230/0067; A61F2230/0095; A61F2250/00; A61F2250/0014; A61F2250/0039; A61F2250/0058; A61F2250/006
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
65 words
An endoluminal prosthesis comprising: a plastically expansive tubular liner having a lumen which defines an axis; and an elongatable helical coil supporting the liner, the coil defining a plurality of loops, wherein the loops are separated to enhance axial flexibility of the prosthesis, and wherein the helical coil elongates during plastic expansion of the liner to avoid unwinding of the coil relative to the liner.
Claim 2
Dependent Claim
65 words
An endoluminal prosthesis comprising: a plastically expansive tubular liner having a lumen which defines an axis; and an elongatable helical coil supporting the liner, the coil defining a plurality of loops, wherein the loops are separated to enhance axial flexibility of the prosthesis, and wherein the helical coil elongates during plastic expansion of the liner to avoid unwinding of the coil relative to the liner.
Claim 3
Dependent Claim
26 words
An endoluminal prosthesis as in claim 1 , wherein the liner comprises a polymer tube having integral ribbing disposed between the separated loops of the coil.
Claim 4
Dependent Claim
29 words
An endoluminal prosthesis as claimed in claim 1 , wherein the coil is attached to the liner at a plurality of attachment points along the length of the coil.
Claim 5
Dependent Claim
22 words
An endoluminal prosthesis as claimed in claim 1 , wherein the coil comprises a shape memory alloy or a shape memory polymer.
Claim 6
Dependent Claim
15 words
The endoluminal prosthesis as in claim 1 , wherein the coil comprises linked diamond-shaped elements.
Claim 7
Dependent Claim
42 words
The endoluminal prosthesis as in claim 1 , wherein the liner material is chosen from a list of materials consisting of: woven polyester such as Dacron, plastically expansible material such as PTFE, partially oriented yarn, annealed composite fiber, and wrapped composite fiber.
Claim 8
Dependent Claim
94 words
An endoluminal prosthesis comprising: a plastically expansible liner material forming a liner tube; and a coil-shaped stent structure having coils separated from each other by a helical separation distance, said coil-shaped stent structure includes a series of linked expandible elements, said coil-shaped stent structure surrounds said liner tube, wherein said liner tube is attached to said coil-shaped stent structure at a plurality of attachment locations around a perimeter of said liner tube such that when said liner tube is expanded, said series of linked expandible elements are stretched between said plurality of attachment locations.
Claim 9
Dependent Claim
94 words
An endoluminal prosthesis comprising: a plastically expansible liner material forming a liner tube; and a coil-shaped stent structure having coils separated from each other by a helical separation distance, said coil-shaped stent structure includes a series of linked expandible elements, said coil-shaped stent structure surrounds said liner tube, wherein said liner tube is attached to said coil-shaped stent structure at a plurality of attachment locations around a perimeter of said liner tube such that when said liner tube is expanded, said series of linked expandible elements are stretched between said plurality of attachment locations.
Claim 10
Dependent Claim
21 words
The endoluminal prosthesis of claim 7 , wherein said series of linked expandible elements are a series of linked diamond-shaped elements.
Claim 11
Dependent Claim
21 words
The endoluminal prosthesis of claim 7 , wherein said helical separation distance is sized to allow said liner material to flex.
Claim 12
Dependent Claim
25 words
The endoluminal prosthesis of claim 7 , wherein said liner tube comprises a polymer tube having integral ribbing disposed between adjacent turns of said coils.
Claim 13
Dependent Claim
18 words
The endoluminal prosthesis of claim 7 , wherein said coil-shaped stent structure is made of a self-expanding material.
Claim 14
Dependent Claim
21 words
The endoluminal prosthesis of claim 11 , wherein said self-expanding material comprises a shape memory alloy or a shape memory polymer.
Claim 15
Dependent Claim
41 words
The endoluminal prosthesis of claim 7 , wherein said liner material is chosen from a list of materials consisting of: woven polyester such as Dacron, plastically expansible material such as PTFE, partially oriented yarn, annealed composite fiber, and wrapped composite fiber.
Claim 16
Dependent Claim
18 words
The endoluminal prosthesis of claim 7 , wherein said coil-shaped stent structure is made of a malleable material.
References Cited (Backward Citations)
US3945052A
Cited
US4130904A
Cited
US4512338A
Cited
US4503569A
Cited
US4774949A
Cited
US4550447A
Cited
US4647416A
Cited
US5397345A
Cited
US4728328A
Cited
US4718907A
Cited
US4957508A
Cited
US4820298A
Cited
EP0357003A2
Cited
US5019090A
Cited
US5226913A
Cited
US5078726A
Cited
US5163958A
Cited
EP0421729B1
Cited
US5035706A
Cited
EP0472731A1
Cited
US5123917A
Cited
US5064435A
Cited
US5122154A
Cited
US5219355A
Cited
US5282824A
Cited
EP0506918B1
Cited
US5330500A
Cited
US5282847A
Cited
EP0508473A2
Cited
FR2678508A1
Cited
US5229045A
Cited
US5387621A
Cited
US5151105A
Cited
US5456713A
Cited
US5211658A
Cited
US5316023A
Cited
EP0551179A1
Cited
US5507767A
Cited
US5405377A
Cited
US5443496A
Cited
US5282823A
Cited
US5370683A
Cited
US5366504A
Cited
US5443499A
Cited
US5514178A
Cited
US5425765A
Cited
WO1995005132A1
Cited
WO1995008966A1
Cited
EP0646365A1
Cited
WO1995009586A1
Cited
US5632772A
Cited
US6165212A
Cited
US5545220A
Cited
US5733325A
Cited
US5562724A
Cited
WO1995016406A1
Cited
WO1995018585A1
Cited
US5476506A
Cited
US5609627A
Cited
WO1995023563A1
Cited
WO1995026695A2
Cited
WO1995029646A1
Cited
EP0684022A2
Cited
WO1995034255A1
Cited
WO1996000103A1
Cited
EP0689805A2
Cited
WO1996003092A1
Cited
US5556426A
Cited
US5653743A
Cited
US5545210A
Cited
US5507769A
Cited
US5632763A
Cited
EP0722702A1
Cited
WO1996023455A1
Cited
US5662675A
Cited
US5617878A
Cited
US5676697A
Cited
US5843166A
Cited
US5851232A
Cited
US6214040B1
Cited
US6168619B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-09-03 | 2005-03-05 | 2005-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-09-03 | 2009-03-05 | 2009-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-09-03 | 2013-03-05 | 2013-09-04 | $7700.00 | Window Closed / Lapsed |