US5824173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making a balloon catheter
Assignee: Cordis Corp
•
Filing: 1996-06-28
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Granted: 1998-10-20
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Expires: 2016-06-28
Abstract
Abstract A method of making an intravascular balloon catheter that has an elongated shaft defining an inflation lumen and a guidewire lumen, as well as a balloon disposed near the distal end of the shaft. The method may include forming an inner shaft by coextruding a flexible plastic tube by bringing a molten outer plastic layer into contact with a molten inner plastic layer, thereby bonding the plastic layers together during the coextrusion process. The inner plastic layer may be more lubricious than the outer plastic layer.
Inventors
- 👤 Carlos A. Fontirroche
- 👤 Stephen J. Querns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:56
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/0009; A61M25/0043; A61M25/0045; B; B29; B29C; B29C48/00; B29C48/001; B29C48/0013; B29C48/0015; B29C48/0016; B29C48/03; B29C48/09; B29C48/10; B29C48/12; B29C48/16; B29C48/18; B29C48/21; A61M2025/0046; A61M2025/0047; A61M2025/0048; A61M25/1034; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
143 words
A method of making a balloon catheter, comprising the steps of: providing a flexible balloon having proximal and distal ends, and a tubular outer shaft member; forming a tubular inner shaft member by coextruding a length of flexible plastic tube by bringing a tubular, molten outer plastic layer into contact with a tubular, molten inner plastic layer, thereby bonding said plastic layers together during the coextrusion process; and thereby forming a unitary, multilayer plastic tube, the plastic material of said inner plastic being more lubricious than the outer plastic layer; and affixing the balloon proximal end to a distal end of the outer shaft member, and affixing the balloon distal end to a distal end of the inner shaft member, thereby defining an annular inflation lumen between the outer and inner shaft members, and defining a guidewire lumen within the inner shaft member.
Claim 2
Independent Claim
143 words
A method of making a balloon catheter, comprising the steps of: providing a flexible balloon having proximal and distal ends, and a tubular outer shaft member; forming a tubular inner shaft member by coextruding a length of flexible plastic tube by bringing a tubular, molten outer plastic layer into contact with a tubular, molten inner plastic layer, thereby bonding said plastic layers together during the coextrusion process; and thereby forming a unitary, multilayer plastic tube, the plastic material of said inner plastic being more lubricious than the outer plastic layer; and affixing the balloon proximal end to a distal end of the outer shaft member, and affixing the balloon distal end to a distal end of the inner shaft member, thereby defining an annular inflation lumen between the outer and inner shaft members, and defining a guidewire lumen within the inner shaft member.
Claim 3
Dependent Claim
24 words
The method of claim 1, in which said bond comprises the formation of a chemical bond between said plastic layers during the coextrusion process.
Claim 4
Dependent Claim
50 words
The method of claim 1, in which the plastic material of said inner layer comprises a vinylic copolymer comprising a minor amount of an unsaturated carboxylic acid or an anhydride thereof, and the material of the outer plastic layer is selected from the group consisting of nylon, polyurethane, and polyester.
Claim 5
Dependent Claim
15 words
The method of claim 3, in which said vinylic copolymer comprises a high density polyethylene.
Claim 6
Independent Claim
155 words
A method of making a balloon catheter, comprising the steps of: forming a proximal shaft member having a proximal guidewire lumen and a proximal inflation lumen arranged in parallel, by coextruding a length of flexible plastic tube by bringing a tubular, molten outer plastic layer into contact with a tubular, molten inner plastic layer to form a unitary, multilayer plastic tube, the inner plastic layer defining the proximal guidewire lumen, and the plastic material of said inner plastic layer being more lubricious than the material of said outer plastic layer, whereby bonding takes place between said plastic layers during the coextrusion process; coupling the proximal guidewire lumen with a distal inner tube, and coupling the proximal inflation lumen with a distal outer tube surrounding the distal inner tube, thereby defining a distal inflation lumen in fluid communication with the proximal inflation lumen; and coupling the distal inflation lumen with the interior of a flexible balloon.
Claim 7
Independent Claim
155 words
A method of making a balloon catheter, comprising the steps of: forming a proximal shaft member having a proximal guidewire lumen and a proximal inflation lumen arranged in parallel, by coextruding a length of flexible plastic tube by bringing a tubular, molten outer plastic layer into contact with a tubular, molten inner plastic layer to form a unitary, multilayer plastic tube, the inner plastic layer defining the proximal guidewire lumen, and the plastic material of said inner plastic layer being more lubricious than the material of said outer plastic layer, whereby bonding takes place between said plastic layers during the coextrusion process; coupling the proximal guidewire lumen with a distal inner tube, and coupling the proximal inflation lumen with a distal outer tube surrounding the distal inner tube, thereby defining a distal inflation lumen in fluid communication with the proximal inflation lumen; and coupling the distal inflation lumen with the interior of a flexible balloon.
Claim 8
Dependent Claim
50 words
The method of claim 5, in which the plastic material of said inner layer comprises a vinylic copolymer comprising a minor amount of an unsaturated carboxylic acid or an anhydride thereof, and the material of the outer plastic layer is selected from the group consisting of nylon, polyurethane, and polyester.
Claim 9
Dependent Claim
15 words
The method of claim 6, in which said vinylic copolymer comprises a high density polyethylene.
References Cited (Backward Citations)
US3697368A
Cited
US3814137A
Cited
US4101699A
Cited
US4233367A
Cited
GB2130093A
Cited
US4551292A
Cited
US4923450A
Cited
GB2209121A
Cited
US4994047A
Cited
US5272012A
Cited
EP0420488B1
Cited
US5270086A
Cited
US5290306A
Cited
US5478320A
Cited
US5620649A
Cited
US5120323A
Cited
US5084315A
Cited
US5063018A
Cited
US5195969A
Cited
US5366442A
Cited
US5221270A
Cited
US5195971A
Cited
US5389314A
Cited
US5348536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-10-19 | 2002-04-20 | 2002-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-19 | 2006-04-20 | 2006-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-19 | 2010-04-20 | 2010-10-20 | $7700.00 | Window Closed / Lapsed |