US5358486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple layer high strength balloon for dilatation catheter
Assignee: IDE Corp
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Filing: 1992-08-11
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Granted: 1994-10-25
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Expires: 2012-08-11
Abstract
Abstract A balloon for a dilatation catheter is formed to define relatively thin cone and neck segments at the opposite ends of the balloon by forming the balloon in a plurality of separate very thin layers. The balloon is built up from a plurality of layers including an inner layer which defines a complete balloon having a cylindrical midportion, cones at its ends and necks at the ends of the cones. Each successive outer layer is trimmed to be shorter than the next adjacent innermost layer, the trimming being effected in the region of the cones. The composite balloon thus formed has a staggered wall thickness in the region of the cones as to define a cone that is approximately uniform in wall thickness in a direction extending toward the neck region. The resulting balloon will be better adapted to collapse to a low profile about the catheter shaft on which it is mounted.
Inventors
- 👤 Mark A. Saab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:50
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/1029; A61L; A61L29/00; A61L29/04; A61L29/06; A61M2025/1043; A61M2025/1075; A61M25/1038; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
In an inelastic balloon for a dilatation catheter, the interior of the balloon being in fluid communication with an inflation lumen within the dilatation catheter when mounted on said dilatation catheter, the balloon being formed from polymeric material and having a cylindrical midportion, an outwardly tapering conical portion at each end of the midportion and a cylindrical neck portion at the ends of the conical portions, the improvement comprising the balloon being formed of at least two inelastic layers including an inner layer and an outer layer, the outer layer having first and second ends which terminate within the conical portions of the inner layer.
Claim 2
Dependent Claim
105 words
In an inelastic balloon for a dilatation catheter, the interior of the balloon being in fluid communication with an inflation lumen within the dilatation catheter when mounted on said dilatation catheter, the balloon being formed from polymeric material and having a cylindrical midportion, an outwardly tapering conical portion at each end of the midportion and a cylindrical neck portion at the ends of the conical portions, the improvement comprising the balloon being formed of at least two inelastic layers including an inner layer and an outer layer, the outer layer having first and second ends which terminate within the conical portions of the inner layer.
Claim 3
Dependent Claim
45 words
A balloon as defined in claim 1 wherein there are at least three layers with at least one intermediate layer being disposed between the inner layer and the outer layer, the intermediate layer being of a length between that of the inner and outer layers.
Claim 4
Dependent Claim
20 words
A balloon as defined in claims 1 or 2 wherein the layers are in intimate adhesive-free contact with each other.
Claim 5
Dependent Claim
26 words
A balloon as defined in claims 1 or 2 wherein the more inwardly disposed layers are of overall greater length than the more outwardly disposed layers.
Claim 6
Dependent Claim
123 words
A balloon dilatation catheter comprising an elongate flexible shaft having an inelastic dilatation balloon mounted at the distal end, the shaft having an inflation lumen therein and the interior of the balloon being in fluid communication with the inflation lumen, the balloon being formed from polymeric material and having a cylindrical midportion, an outwardly tapering conical portion at each end of the midportion and a cylindrical neck portion at the ends of the conical portions, the balloon being formed of at least two inelastic layers including an inner layer and an outer layer, the outer layer having first and second ends which terminate within the conical portions of the inner layer, the neck portions of the balloon being adhesively attached to the shaft.
Claim 7
Dependent Claim
123 words
A balloon dilatation catheter comprising an elongate flexible shaft having an inelastic dilatation balloon mounted at the distal end, the shaft having an inflation lumen therein and the interior of the balloon being in fluid communication with the inflation lumen, the balloon being formed from polymeric material and having a cylindrical midportion, an outwardly tapering conical portion at each end of the midportion and a cylindrical neck portion at the ends of the conical portions, the balloon being formed of at least two inelastic layers including an inner layer and an outer layer, the outer layer having first and second ends which terminate within the conical portions of the inner layer, the neck portions of the balloon being adhesively attached to the shaft.
Claim 8
Dependent Claim
47 words
A balloon dilatation catheter as defined in claim 5 wherein there are at least three layers with at least one intermediate layer being disposed between the inner layer and the outer layer, the intermediate layer being of a length between that of the inner and outer layers.
Claim 9
Dependent Claim
22 words
A balloon dilatation catheter as defined in claims 5 or 6 wherein the layers are in intimate adhesive-free contact with each other.
References Cited (Backward Citations)
US3707151A
Cited
US4335723A
Cited
SU1069826A1
Cited
USRE33561E
Cited
US4490421A
Cited
US4702252A
Cited
US4637396A
Cited
US4820349A
Cited
US4819751A
Cited
US4963313A
Cited
US4952357A
Cited
US5108415A
Cited
US5270086A
Cited
US5290306A
Cited
EP0457456A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |