US6048360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making and using coiled sheet graft for single and bifurcated lumens
Assignee: Boston Scientific Scimed Inc
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Filing: 1998-03-25
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Granted: 2000-04-11
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Expires: 2018-03-25
Abstract
Abstract A prosthesis is provided for treating aneurysms, occlusive disease of vessels and body organs, and arterio-venous fistulas, occurring in single and bifurcated lumens. The prosthesis comprises an expandable coiled sheet portion having a biocompatible graft, either a sheet or tube, affixed thereto along part or all of the circumference of the coiled sheet portion. The prosthesis has a small delivery profile, making it suitable for use in a variety of body vessels. Methods of making and deploying the prosthesis in single and bifurcated lumens are also provided.
Inventors
- 👤 Farhad Khosravi
- 👤 Michael Hogendijk
- 👤 John Spiridigliozzi
- 👤 Michael R. Ross
- 👤 Himanshu Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:28
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/92; A61F2/93; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2002/065; A61F2002/072; A61F2002/075; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2220/0025; A61F2220/0041; A61F2220/005; A61F2220/0075
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
97 words
A method of making a graft stent for treating a section of a body lumen, the method comprising: providing a coiled sheet of a resilient material, the coiled sheet having a surface, a contracted state of reduced diameter and an expanded state of enlarged diameter, the coiled sheet forming a series of overlapping turns in the contracted state; and affixing a biocompatible graft material to a portion of the surface of the coiled sheet, the graft material being wound within the overlapping turns of the coiled sheet when the coiled sheet is wound to its contracted state.
Claim 2
Independent Claim
97 words
A method of making a graft stent for treating a section of a body lumen, the method comprising: providing a coiled sheet of a resilient material, the coiled sheet having a surface, a contracted state of reduced diameter and an expanded state of enlarged diameter, the coiled sheet forming a series of overlapping turns in the contracted state; and affixing a biocompatible graft material to a portion of the surface of the coiled sheet, the graft material being wound within the overlapping turns of the coiled sheet when the coiled sheet is wound to its contracted state.
Claim 3
Dependent Claim
55 words
The method as defined in claim 1 wherein affixing a biocompatible graft material to the surface of the coiled sheet comprises: coating the surface of the coiled sheet with a biocompatible adhesive having a cured state, the biocompatible adhesive being flexible in the cured state; and adhering the coiled sheet to the biocompatible graft material.
Claim 4
Dependent Claim
37 words
The method as defined in claim 1 wherein providing a coiled sheet further comprises providing a coiled sheet having a plurality of teeth on one edge and mating openings that interengage the teeth on an opposing edge.
Claim 5
Dependent Claim
29 words
The method as defined in claim 1 further comprising: trimming excess graft material from the coiled sheet to complete assembly of the graft stent; and sterilizing the graft stent.
Claim 6
Dependent Claim
32 words
The method as defined in claim 1 wherein affixing a biocompatible graft material to the surface of the coiled sheet comprises suturing or stitching the biocompatible graft material to the coiled sheet.
Claim 7
Dependent Claim
42 words
The method as defined in claim 1 wherein affixing a biocompatible graft material to the surface of the coiled sheet comprises dipping the coiled sheet into a curable biocompatible liquid polymer, the biocompatible liquid polymer forming the biocompatible graft material when cured.
Claim 8
Independent Claim
95 words
A method for making a graft stent for treating a section of a body lumen, the method comprising: providing a sheet including a lattice and a surface, the sheet having an initial flat shape and being capable of being formed into a coiled shape; forming the sheet into the coiled shape, the coiled shape having a series of overlapping turns; and affixing a biocompatible graft material to at least a portion of the surface of the sheet, the biocompatible graft material being wound within the overlapping turns when the sheet is in the coiled shape.
Claim 9
Independent Claim
95 words
A method for making a graft stent for treating a section of a body lumen, the method comprising: providing a sheet including a lattice and a surface, the sheet having an initial flat shape and being capable of being formed into a coiled shape; forming the sheet into the coiled shape, the coiled shape having a series of overlapping turns; and affixing a biocompatible graft material to at least a portion of the surface of the sheet, the biocompatible graft material being wound within the overlapping turns when the sheet is in the coiled shape.
Claim 10
Dependent Claim
40 words
The method as defined in claim 7, wherein the affixing step comprises: coating at least a portion of the surface of the sheet with a biocompatible adhesive; and bonding the sheet to the biocompatible graft material with the biocompatible adhesive.
Claim 11
Dependent Claim
20 words
The method as defined in claim 7, wherein the affixing step comprises suturing the sheet and biocompatible graft material together.
Claim 12
Dependent Claim
32 words
The method as defined in claim 7, wherein the affixing step comprises: dipping the sheet into a liquid polymer; and bonding the sheet to the biocompatible graft material with the liquid polymer.
Claim 13
Dependent Claim
43 words
The method as defined in claim 7, wherein the affixing step comprises: dipping the sheet into a liquid polymer to form a film along the surface of the sheet; and curing the liquid polymer, the cured polymer film comprising the biocompatible graft material.
Claim 14
Dependent Claim
32 words
The method as defined in claim 11, wherein the lattice comprises a multiplicity of openings therein, and wherein the film extends across the multiplicity of openings when the sheet is dipped therein.
Claim 15
Dependent Claim
35 words
The method as defined in claim 7, wherein the winding step comprises spirally winding the sheet into the coiled shape to provide an outer overlapping edge that spirals around an outer surface of the sheet.
Claim 16
Dependent Claim
66 words
The method as defined in claim 7, wherein a length of the biocompatible graft material is left extending from an edge of the sheet to form a flap when the biocompatible graft material is affixed to the sheet, and wherein the flap is wound to overlap a longitudinal seam extending along an outer surface of the sheet when the sheet is formed into the coiled shape.
Claim 17
Dependent Claim
22 words
The method as defined in claim 7, further comprising affixing a tubular graft to an opening in the surface of the sheet.
Claim 18
Dependent Claim
20 words
The method as defined in claim 15, further comprising providing a suture loop through an end of the tubular graft.
Claim 19
Dependent Claim
32 words
The method as defined in claim 7, wherein the sheet comprises first and second sheets, and wherein the affixing step comprises sandwiching the biocompatible graft material between the first and second sheets.
Claim 20
Dependent Claim
25 words
The method as defined in claim 17, wherein the first and second sheets are glued together with an adhesive, trapping the biocompatible graft material therebetween.
Claim 21
Dependent Claim
31 words
The method as defined in claim 17, wherein the first and second sheets comprise mating projections and sockets, and wherein the affixing step comprises inserting the projections into the mating sockets.
Claim 22
Independent Claim
103 words
A method for making a graft stent for treating a section of a body lumen, the method comprising: providing a sheet including a surface, the sheet having an initial flat shape and being capable of being formed into a coiled shape; forming the sheet into the coiled shape having a series of overlapping turns; providing a pair of layers of biocompatible graft material; and affixing the sheet between the pair of layers of biocompatible graft material, at least a portion of one of the layers of biocompatible graft material being wound within the overlapping turns when the sheet is in the coiled shape.
Claim 23
Independent Claim
103 words
A method for making a graft stent for treating a section of a body lumen, the method comprising: providing a sheet including a surface, the sheet having an initial flat shape and being capable of being formed into a coiled shape; forming the sheet into the coiled shape having a series of overlapping turns; providing a pair of layers of biocompatible graft material; and affixing the sheet between the pair of layers of biocompatible graft material, at least a portion of one of the layers of biocompatible graft material being wound within the overlapping turns when the sheet is in the coiled shape.
Claim 24
Dependent Claim
53 words
The method as defined in claim 20, wherein the sheet comprises a multiplicity of openings, and wherein the affixing step comprises: sandwiching the sheet between the two layers of biocompatible graft material; and heating the biocompatible graft material to a temperature at which the two layers fuse together through the multiplicity of openings.
Claim 25
Dependent Claim
28 words
The method as defined in claim 21, wherein the affixing step further comprises applying pressure to the pair of layers of biocompatible graft material during the heating step.
Claim 26
Dependent Claim
25 words
The method as defined in claim 21, wherein the affixing step further comprises suturing the pair of layers of biocompatible graft material to the sheet.
Claim 27
Dependent Claim
49 words
The method as defined in claim 20, wherein the affixing step comprises: affixing the pair of layers of biocompatible graft material together; inserting the sheet between the affixed pair of layers of biocompatible graft material; and stitching the sheet to the affixed pair of layers of biocompatible graft material.
Claim 28
Dependent Claim
44 words
The method as defined in claim 24, wherein the step of affixing the pair of layers of biocompatible graft material together comprises sewing the pair of layers of biocompatible graft material together to form a pillow case structure into which the sheet is inserted.
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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) | 2003-04-11 | 2003-10-11 | 2004-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-11 | 2007-10-11 | 2008-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-11 | 2011-10-11 | 2012-04-11 | $7700.00 | Window Closed / Lapsed |