US7485141B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of placing a tubular membrane on a structural frame
Assignee: Cordis US Corp
•
Filing: 2003-03-28
•
Granted: 2009-02-03
•
Expires: 2023-03-28
Abstract
Abstract The present invention relates to a medical device, and more particularly to a method of forming a tubular membrane on a radially expandable structural frame. In one aspect, a structural frame is placed over a spinning mandrel and a fiber is electro-statically spun over at least a portion of the structural frame forming a membrane. A transfer sheath may be used between the mandrel and structural frame to prevent the electrostatically spun fiber from adhering to the mandrel. In another aspect, a first membrane is spun over the mandrel before the structural frame is placed over the mandrel. In this aspect, at least a portion of the structural frame is sandwiched between the membranes. The membrane or membranes and structural frame form a fiber spun frame assembly. The fiber spun frame assembly may be coated with an elastic polymer. In addition, the membrane or membranes may go through some post processing to achieve desired characteristics or configurations.
Inventors
- 👤 David Christopher Majercak
- 👤 Vipul Bhupendra Dave
- 👤 Iksoo Chun
- 👤 Mark B. Roller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:46
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2475; A61F2/2412; A61F2/2418; A61F2/82; A61F2002/825; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
83 words
A method of placing a tubular membrane structure about a radially expandable structural frame, the method comprising the steps of: placing a transfer sheath over a mandrel; coating the transfer sheath with an elastomeric polymer solution to form an inner membrane; radially expanding the structural frame; placing the radially expanded structural frame over the inner membrane; contracting the radially expanded structural frame; and forming an outer membrane over the structural frame, the inner membrane and outer membrane combining to form the tubular membrane.
Claim 2
Independent Claim
83 words
A method of placing a tubular membrane structure about a radially expandable structural frame, the method comprising the steps of: placing a transfer sheath over a mandrel; coating the transfer sheath with an elastomeric polymer solution to form an inner membrane; radially expanding the structural frame; placing the radially expanded structural frame over the inner membrane; contracting the radially expanded structural frame; and forming an outer membrane over the structural frame, the inner membrane and outer membrane combining to form the tubular membrane.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein the step of coating comprises spraying the polymer solution over the transfer sheath.
Claim 4
Dependent Claim
18 words
The method of claim 1 wherein the step of coating comprises dipping the mandrel in the polymer solution.
Claim 5
Dependent Claim
30 words
The method of claim 1 where the step of coating comprises: dipping the mandrel in the solution of polymer; and spinning the dip coated mandrel to evenly distribute the coating.
Claim 6
Independent Claim
90 words
A method of placing a tubular membrane structure about a radially expandable structural frame, the method comprising the steps of: placing a transfer sheath over a mandrel; placing a polymer tube over the transfer sheath; coating the polymer tube with an elastomeric polymer to form an inner membrane; radially expanding the structural frame; placing the radially expanded structural frame over the inner membrane; contracting the radially expanded structural frame; and forming an outer membrane over the structural frame, the inner membrane and outer membrane combining to form the tubular membrane.
Claim 7
Independent Claim
90 words
A method of placing a tubular membrane structure about a radially expandable structural frame, the method comprising the steps of: placing a transfer sheath over a mandrel; placing a polymer tube over the transfer sheath; coating the polymer tube with an elastomeric polymer to form an inner membrane; radially expanding the structural frame; placing the radially expanded structural frame over the inner membrane; contracting the radially expanded structural frame; and forming an outer membrane over the structural frame, the inner membrane and outer membrane combining to form the tubular membrane.
Claim 8
Dependent Claim
44 words
The method of claim 5 wherein the step of placing a polymer tube over the transfer sheath comprises: radially expanding the polymer tube; positioning the radially expanded polymer tube over the transfer sheath; and contracting the radially expanded polymer tube onto the transfer sheath.
Claim 9
Dependent Claim
19 words
The method of claim 5 wherein the step of coating comprises spraying the polymer solution over the polymer tube.
Claim 10
Dependent Claim
19 words
The method of claim 5 wherein the step of coating comprises dipping the polymer tube in the polymer solution.
Claim 11
Dependent Claim
31 words
The method of claim 5 where the step of coating comprises: dipping the polymer tube in the polymer solution; and spinning the dip coated polymer tube to evenly distribute the coating.
Claim 12
Dependent Claim
43 words
The method of claim 1 or 5 wherein the step of radially expanding the structural frame comprises: inserting a radially expanding means into the structural frame along the structural frame's longitudinal axis; and radially expanding the expanding means to expand the structural frame.
Claim 13
Dependent Claim
23 words
The method of claim 10 further comprising cooling the radially expanded structural frame in the expanded position to substantially maintain the expanded position.
Claim 14
Dependent Claim
27 words
The method of claim 1 or 5 wherein the step of contracting the radially expanded structural frame comprises applying a radially compressive force to the structural frame.
Claim 15
Dependent Claim
22 words
The method of claim 1 or 5 wherein the step of contracting the radially expanded structural frame comprises heating the structural frame.
Claim 16
Dependent Claim
46 words
The method of claim 1 or 5 wherein the step of forming an outer membrane over the structural frame comprises: radially expanding a polymer tube; positioning the radially expanded polymer tube over the structural frame; and contracting the radially expanded polymer tube onto the transfer sheath.
Claim 17
Dependent Claim
17 words
The method of claim 1 or 5 further comprising coating the tubular membrane with a polymer solution.
Claim 18
Dependent Claim
19 words
The method of claim 15 wherein the step of coating comprises spraying the polymer solution over the tubular membrane.
Claim 19
Dependent Claim
19 words
The method of claim 15 wherein the step of coating comprises dipping the tubular membrane in the polymer solution.
Claim 20
Dependent Claim
31 words
The method of claim 15 where the step of coating comprises: dipping the tubular membrane in the polymer solution; and spinning the dip coated tubular membrane to evenly distribute the coating.
Claim 21
Dependent Claim
16 words
The method of claim 1 or 5 further comprising performing post processing of the tubular membrane.
Claim 22
Dependent Claim
16 words
The method of claim 19 wherein the step of post processing includes reshaping the tubular membrane.
Claim 23
Dependent Claim
21 words
The method of claim 19 wherein the step of post processing includes thinning at least a portion of the tubular membrane.
Claim 24
Dependent Claim
21 words
The method of claim 19 wherein the step of post processing includes thickening at least a portion of the tubular membrane.
Claim 25
Dependent Claim
18 words
The method of claim 19 wherein the step of post processing includes forming cusps in the tubular membrane.
References Cited (Backward Citations)
US4323525A
Cited
US4892541A
Cited
US4692164A
Cited
US4790843A
Cited
US4725274A
Cited
US5156621A
Cited
US5032128A
Cited
US4969896A
Cited
US5824061A
Cited
US5609626A
Cited
US5500014A
Cited
US5997573A
Cited
US5084065A
Cited
US5037434A
Cited
US5147391A
Cited
US5123917A
Cited
US5411552A
Cited
US6168614B1
Cited
US5840081A
Cited
US5415667A
Cited
US5423887A
Cited
US5326370A
Cited
US5326371A
Cited
US5489298A
Cited
US5163955A
Cited
US5449385A
Cited
US5344442A
Cited
US5358518A
Cited
US5876445A
Cited
US5123919A
Cited
US5163953A
Cited
US5469868A
Cited
US5258023A
Cited
US5449384A
Cited
US5607463A
Cited
US6375787B1
Cited
US5549665A
Cited
US6309413B1
Cited
US5480424A
Cited
US5607465A
Cited
US5612885A
Cited
US5938696A
Cited
US5843181A
Cited
US5697382A
Cited
US5554185A
Cited
US5562729A
Cited
US6124523A
Cited
US6355056B1
Cited
US5728152A
Cited
US5895420A
Cited
US6165216A
Cited
US6068638A
Cited
US6071277A
Cited
EP0808614A2
Cited
US5855601A
Cited
US5861028A
Cited
US5855602A
Cited
US6086610A
Cited
US6315791B1
Cited
US6287334B1
Cited
EP0850607A1
Cited
US5851232A
Cited
US5928281A
Cited
US5957949A
Cited
US6245102B1
Cited
US5855597A
Cited
US5910170A
Cited
EP0928606A1
Cited
CA2318829A1
Cited
EP0938879A2
Cited
US5935163A
Cited
US6200336B1
Cited
CA2345669A1
Cited
FR2788217A1
Cited
WO2000047139A1
Cited
WO2000047136A1
Cited
US6283995B1
Cited
US20020068967A1
Cited
US6228112B1
Cited
US6296662B1
Cited
US6299637B1
Cited
WO2001028459A1
Cited
WO2001049213A2
Cited
US6245100B1
Cited
WO2001067992A1
Cited
US20020032481A1
Cited
EP1192957A2
Cited
WO2002026139A1
Cited
US20020133183A1
Cited
US6494909B2
Cited
US20020138135A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2012-02-03 | 2012-08-04 | 2013-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2016-02-03 | 2016-08-04 | 2017-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2020-02-03 | 2020-08-04 | 2021-02-03 | $7700.00 | Window Closed / Lapsed |