US7000305B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing a wire stent coated with a biocompatible fluoropolymer
Assignee: Iowa India Investments Co Ltd
•
Filing: 2003-11-24
•
Granted: 2006-02-21
•
Expires: 2023-11-24
Abstract
Abstract A method for manufacturing a stent includes heating a plurality of wire strands to impart a desired shape to the wire strands, coating each wire strand with a biocompatible polymer in an extruder to produce a plurality of coated wire strands, and interlacing the coated wire strands to form a stent.
Inventors
- 👤 Swaminathan Jayaraman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/14; D04B21/16; A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/82; A61F2/86; A61F2/88; A61F2/885; A61F2/90; A61F2002/072; D10; D10B; D10B2509/00; D10B2509/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T29/4998; Y10T29/49982
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
79 words
A method for making a stent comprising: heat treating a plurality of wire strands; coating the wire strands with a biocompatible fluoropolymer in an extruder to produce a plurality of coated wire strands; spooling the coated wire strands; and interlacing the coated wire strands from separate spools into a tightly held together monolayer integrated tubular shape, the tubular shape adapted to have axial and radial compressibility for insertion into a cardiovascular, vascular or non-vascular system of a human body.
Claim 2
Independent Claim
79 words
A method for making a stent comprising: heat treating a plurality of wire strands; coating the wire strands with a biocompatible fluoropolymer in an extruder to produce a plurality of coated wire strands; spooling the coated wire strands; and interlacing the coated wire strands from separate spools into a tightly held together monolayer integrated tubular shape, the tubular shape adapted to have axial and radial compressibility for insertion into a cardiovascular, vascular or non-vascular system of a human body.
Claim 3
Dependent Claim
32 words
The method as defined in claim 1 wherein the wire strands include a material selected from the group consisting of stainless steel, tungsten, titanium, nickel-titanium alloy, gold, silver or a combination thereof.
Claim 4
Dependent Claim
24 words
The method as defined in claim 1 wherein the fluoropolymer is selected from the group consisting of PTFE, ePTFE, FEP or a combination thereof.
Claim 5
Dependent Claim
19 words
The method as defined in claim 1 wherein at least one wire strand is employed in a coil pattern.
Claim 6
Dependent Claim
20 words
The method as defined in claim 1 wherein interlacing the coated wire strands is carried out in a knitting machine.
Claim 7
Dependent Claim
41 words
The method as defined in claim 5 wherein a brake mechanism on a spool supplying one coated wire strand causes the spool to supply such coated wire stand at a slower rate than other spools supplying the other coated wire strands.
Claim 8
Dependent Claim
17 words
The method as defined in claim 1 wherein textile strands are interlaced between the coated wire strands.
Claim 9
Dependent Claim
29 words
The method as defined in claim 7 wherein the textile strands include a material selected from the group consisting of polyester, polypropylene, polyethylene, polyurethane, polytetrafluoroethylene or a combination thereof.
Claim 10
Dependent Claim
26 words
The method as defined in claim 1 wherein at least one wire strand is preheated in an oven to impart an intended shape prior to coating.
Claim 11
Dependent Claim
27 words
The method as defined in claim 1 wherein the tightly held together monolayer integrated tubular shape allows for the exuding of blood for proper lumen wall function.
Claim 12
Independent Claim
51 words
A method for making a stent comprising: heating a plurality of wire strands to impart a desired shape to the wire strands; coating each wire strand with a biocompatible polymer in an extruder to produce a plurality of coated wire strands; and interlacing the coated wire strands to form a stent.
Claim 13
Independent Claim
51 words
A method for making a stent comprising: heating a plurality of wire strands to impart a desired shape to the wire strands; coating each wire strand with a biocompatible polymer in an extruder to produce a plurality of coated wire strands; and interlacing the coated wire strands to form a stent.
Claim 14
Dependent Claim
24 words
The method as defined in claim 11 further including regulating the speed of the wire strands in the extruder to provide a uniform coating.
Claim 15
Dependent Claim
19 words
The method as defined in claim 12 wherein interlacing includes braiding the coated wire strands in a braiding machine.
Claim 16
Dependent Claim
38 words
The method as defined in claim 13 further including spooling the coated wire strands onto spools, and wherein braiding includes removing the coated wire strands from the spools while braiding the coated wire strands in the braiding machine.
Claim 17
Dependent Claim
26 words
The method as defined in claim 14 further including regulating the speed of at least one of the spools at a slower rate than other spools.
Claim 18
Dependent Claim
19 words
The method as defined in claim 15 further including incorporating a fabric material between the braided, coated wire strands.
Claim 19
Dependent Claim
18 words
The method as defined in claim 16 further including preparing ends of the wire strands to prevent fraying.
Claim 20
Dependent Claim
19 words
The method as defined in claim 11 wherein interlacing includes knitting the coated wire strands in a knitting machine.
Claim 21
Independent Claim
50 words
A method for making a stent comprising: coating a plurality of wire strands with a biocompatible polymer and an adhesive in an extruder to produce a plurality of coated wire strands; heating the coated wire strands to activate the adhesive; and interlacing the coated wire strands to produce a stent.
Claim 22
Independent Claim
50 words
A method for making a stent comprising: coating a plurality of wire strands with a biocompatible polymer and an adhesive in an extruder to produce a plurality of coated wire strands; heating the coated wire strands to activate the adhesive; and interlacing the coated wire strands to produce a stent.
Claim 23
Independent Claim
50 words
A method for making a stent comprising: interlacing a plurality of wire strands into a desired shape; heating the wire strands in the desired shape; removing the wire strands from the desired shape; coating the wire strands with a biocompatible polymer; and interlacing the wire strands to form a stent.
Claim 24
Independent Claim
50 words
A method for making a stent comprising: interlacing a plurality of wire strands into a desired shape; heating the wire strands in the desired shape; removing the wire strands from the desired shape; coating the wire strands with a biocompatible polymer; and interlacing the wire strands to form a stent.
References Cited (Backward Citations)
US2524661A
Cited
US3466166A
Cited
US3562024A
Cited
US3657744A
Cited
US4866816A
Cited
US4023557A
Cited
US4300244A
Cited
US4281419A
Cited
US4441215A
Cited
US4409172A
Cited
US4465481A
Cited
US4655771A
Cited
US4655771B1
Cited
US4573242A
Cited
US4640320A
Cited
US4719916A
Cited
US4600446A
Cited
US4669474A
Cited
US5197977A
Cited
US4879135A
Cited
US4732152A
Cited
US4718907A
Cited
US4752054A
Cited
US4733665A
Cited
US4733665B1
Cited
US4776337A
Cited
US4733665C2
Cited
US4776337B1
Cited
US4902290A
Cited
US4878906A
Cited
US4762128A
Cited
US4813416A
Cited
US4816339A
Cited
US5061276A
Cited
US5059211A
Cited
US5306286A
Cited
US5192307A
Cited
US4877030A
Cited
US4986831A
Cited
US5192311A
Cited
US5195984A
Cited
US5078726A
Cited
US5007926A
Cited
US5289831A
Cited
US5100429A
Cited
US4990158A
Cited
US5104403A
Cited
US5084065A
Cited
US5147385A
Cited
US4950285A
Cited
US5059166A
Cited
US5234456A
Cited
US5107852A
Cited
US5156623A
Cited
US5158548A
Cited
US5123917A
Cited
US5078736A
Cited
US5290271A
Cited
US5279594A
Cited
US5064435A
Cited
US5258020A
Cited
US5282824A
Cited
US5180366A
Cited
US5330500A
Cited
US5163951A
Cited
US5116360A
Cited
US5156620A
Cited
US5304220A
Cited
US5192310A
Cited
US5234457A
Cited
US5387235A
Cited
US5456713A
Cited
US5282823A
Cited
US5725570A
Cited
US5217026A
Cited
US5366504A
Cited
US5674276A
Cited
US5507771A
Cited
US5383926A
Cited
US5910168A
Cited
US5679470A
Cited
US5630840A
Cited
US5628787A
Cited
US5824077A
Cited
US5800511A
Cited
US6027779A
Cited
US6357104B1
Cited
US5700285A
Cited
US5741325A
Cited
US5836962A
Cited
US5389106A
Cited
WO1996000103A1
Cited
US5522881A
Cited
US5632840A
Cited
US5649977A
Cited
US5700286A
Cited
US5770819A
Cited
US5674241A
Cited
US5556414A
Cited
US5849037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-02-20 | 2009-08-22 | 2010-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-02-20 | 2013-08-22 | 2014-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-02-20 | 2017-08-22 | 2018-02-21 | $7700.00 | Window Closed / Lapsed |