Patent US5478320A successfully refreshed from Google Patents.
US5478320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Puncture resistant balloon catheter and method of manufacturing
Assignee: Cordis Corp
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Filing: 1994-01-31
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Granted: 1995-12-26
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Expires: 2014-01-31
Abstract
Abstract A balloon catheter comprises a flexible, elongated member, an inflatable balloon carried on the elongated member to define an inflated chamber within the balloon, and an inflation conduit extending along the member and communicating with the inflation chamber. The inflatable balloon, in turn, defines a wall which comprises at least three bonded layers. A first pair of the layers comprises a flexible plastic material which is typically a condensation polymer. A second of the layers comprises a flexible polymer which is typically a vinylic polymer which is covalently bonded to the first layers and positioned between them.
Inventors
- 👤 Thomas Trotta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:24
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/1029; A61M25/104; A61M2025/1043; A61M2025/1075; A61M2025/1084
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
129 words
A balloon catheter which comprises a flexible, elongated member, an inflatable balloon carried on the elongated member to define an inflation chamber within said balloon, and an inflation conduit extending along said member and communicating with the inflation chamber, said inflatable balloon defining a wall having at least three layers, said layers comprising a pair of first flexible nylon layers and a second of said layers comprising a flexible vinylic polymer having functional groups positioned between and bonded to said nylon layers, said first layers being made of a flexible material of less elasticity than the material of said second layers, one of said first layers being bonded to said elongated member, said elongated member being made of a plastic of the same chemical type as said first layer.
Claim 2
Dependent Claim
129 words
A balloon catheter which comprises a flexible, elongated member, an inflatable balloon carried on the elongated member to define an inflation chamber within said balloon, and an inflation conduit extending along said member and communicating with the inflation chamber, said inflatable balloon defining a wall having at least three layers, said layers comprising a pair of first flexible nylon layers and a second of said layers comprising a flexible vinylic polymer having functional groups positioned between and bonded to said nylon layers, said first layers being made of a flexible material of less elasticity than the material of said second layers, one of said first layers being bonded to said elongated member, said elongated member being made of a plastic of the same chemical type as said first layer.
Claim 3
Dependent Claim
17 words
The balloon catheter of claim 1 in which said layers of the balloon wall are chemically bonded.
Claim 4
Dependent Claim
16 words
The balloon catheter of claim 1 in which said balloon wall comprises a coextruded, blow-expanded tube.
Claim 5
Dependent Claim
29 words
The balloon catheter of claim 3 in which each of said first layers are 0.0001 to 0.0004 inch thick and said second layer is 0.0001 to 0.002 inch thick.
Claim 6
Dependent Claim
33 words
The balloon catheter of claim 2 in which said vinylic polymer is a copolymer of a major amount of ethylene and a minor amount of an unsaturated carboxylic acid or an anhydride thereof.
Claim 7
Dependent Claim
26 words
The balloon catheter of claim 5 in which from about 1 to 5 mole percent of maleic anhydride polymer units are present in said vinylic polymer.
Claim 8
Dependent Claim
32 words
The balloon catheter of claim 1 in which said vinylic polymer is a copolymer of a major amount of ethylene and a minor amount of an unsaturated carboxylic acid or anhydride thereof.
Claim 9
Dependent Claim
23 words
The balloon catheter of claim 7 in which from about 1 to 5 mole percent of maleic anhydride is present is said copolymer.
Claim 10
Dependent Claim
14 words
The balloon catheter of claim 1 in which said first layer comprises nylon 12.
Claim 11
Dependent Claim
32 words
The balloon catheter of claim 9 in which the second layer comprises a copolymer of a major amount of ethylene and a minor amount of an unsaturated carboxylic acid or anhydride thereof.
Claim 12
Dependent Claim
23 words
The balloon catheter of claim 10 in which from about 1 to 5 mole percent of maleic anhydride is present in said copolymer.
Claim 13
Dependent Claim
14 words
The balloon catheter of claim 1 in which the first layers are biaxially oriented.
Claim 14
Dependent Claim
32 words
The balloon catheter of claim 12 in which said vinylic polymer is a copolymer of a major amount of ethylene and a minor amount of an unsaturated carboxylic acid or anhydride thereof.
Claim 15
Dependent Claim
23 words
The balloon catheter of claim 13 in which from about 1 to 5 mole percent of maleic anhydride is present in said copolymer.
Claim 16
Dependent Claim
18 words
The balloon catheter of claim 12 in which said balloon has a wall which comprises a triextruded tube.
Claim 17
Dependent Claim
43 words
The balloon catheter of claim 15 in which the thickness of said balloon wall is no more than about 0.003 inch, said second layer comprising from 10 to 50 percent of said thickness, and the balance of said thickness comprising said first layers.
Claim 18
Dependent Claim
42 words
The balloon catheter of claim 1 in which the thickness of said balloon wall is no more than 0.003 inch, said second layer comprising from 10 to 50 percent of said thickness, and the balance of said thickness comprising said first layers.
Claim 19
Dependent Claim
152 words
A balloon catheter which comprises a flexible, elongated nylon outer catheter tube having a distal end and a flexible, elongated inner catheter body made of nylon positioned within said outer catheter tube and having a distal end portion extending distally forward of said outer catheter tube; an inflatable tubular balloon having proximal and distal ends, the balloon proximal end being sealed to said outer catheter body and the balloon distal end being sealed to the inner catheter body, the inflatable balloon defining a wall comprising at least three layers comprising a nylon innermost layer; an intermediate layer made of a copolymer of a major amount of ethylene and a minor amount of an unsaturated carboxylic acid or an anhydride thereof, and an outermost layer of nylon, each of the proximal and distal end seals joining a nylon layer of said balloon respectively to the outer catheter tube and the inner catheter body.
Claim 20
Dependent Claim
152 words
A balloon catheter which comprises a flexible, elongated nylon outer catheter tube having a distal end and a flexible, elongated inner catheter body made of nylon positioned within said outer catheter tube and having a distal end portion extending distally forward of said outer catheter tube; an inflatable tubular balloon having proximal and distal ends, the balloon proximal end being sealed to said outer catheter body and the balloon distal end being sealed to the inner catheter body, the inflatable balloon defining a wall comprising at least three layers comprising a nylon innermost layer; an intermediate layer made of a copolymer of a major amount of ethylene and a minor amount of an unsaturated carboxylic acid or an anhydride thereof, and an outermost layer of nylon, each of the proximal and distal end seals joining a nylon layer of said balloon respectively to the outer catheter tube and the inner catheter body.
Claim 21
Dependent Claim
25 words
The balloon catheter of claim 18 in which each of said layers in the balloon wall has a thickness of about 0.0001 to 0.0004 inch.
Claim 22
Dependent Claim
32 words
The balloon catheter of claim 19 in which each of said layers of the balloon has a thickness of about 0.0002 inch and said balloon has a diameter of about 0.1 inch.
Claim 23
Dependent Claim
22 words
The balloon catheter of claim 19 in which said copolymer comprises about 1 to 5 mole percent of maleic anhydride polymer units.
Claim 24
Dependent Claim
18 words
The balloon catheter of claim 18 in which the layers of said balloon wall are chemically bonded together.
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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) | 1998-12-25 | 1999-06-26 | 1999-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-25 | 2003-06-26 | 2003-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-25 | 2007-06-26 | 2007-12-26 | $7700.00 | Window Closed / Lapsed |