US5100381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angioplasty catheter
Assignee: Boston Scientific Scimed Inc
•
Filing: 1990-09-20
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Granted: 1992-03-31
•
Expires: 2010-09-20
Abstract
Abstract An over-the-wire balloon catheter for use in angioplasty includes a dual lumen shaft formed by a multisection outer tube and a multisection inner tube. The outer tube includes a first thin wall outer tube section which is connected to a manifold at its proximal end. The outer tube also includes a second outer tube section which is attached to the distal end of the first outer tube section and which has a greater flexibility. The inner tube has a first thin wall inner tube section which extends generally coaxially through the first outer tube section and into the interior of the second outer tube section. The inner tube also includes a second thin wall inner tube section which is attached to the distal end of the first inner tube section and extends distally beyond the distal end of the outer tube. A balloon is attached to the distal ends of the outer and inner tubes. The inner tube sections have a coating of a low friction material, such as polyimide-polytetrafluoroethylene composite, on their inner walls to facilitate movement of a guide wire through the guide wire lumen of the inner tube.
Inventors
- 👤 Matthew M. Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:07
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M2025/0004; A61M25/0043; A61M25/0045; A61M2025/0046; A61M2025/0047; A61M2025/1043; A61M2025/1079
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
218 words
A dilatation catheter comprising: an inner tube including a first inner tube section and a second inner tube section connected together and having a guide wire lumen extending therethrough, the second inner tube section extending distally from the first inner tube section and having an outer diameter which is less than the outer diameter of the first inner tube section, the first and second inner tube sections having wall thicknesses less than about 0.002 inches and having a lubricious material on their inner surfaces; an outer tube positioned over the inner tube to define an inflation lumen between the inner tube and the outer tube, the outer tube having a first outer tube section having a wall thickness of less than about 0.002 inches and a second outer tube section positioned distally of the first outer tube section having a wall thickness of less than about 0.003 inches, the second outer tube section having greater flexibility than and made of material different than material of the first outer tube section; and a balloon having a proximal portion connected to a distal end of the second outer tube section and a distal portion connected to a distal end of the second inner tube section, the balloon being made of material different than material of the second outer tube section.
Claim 2
Dependent Claim
218 words
A dilatation catheter comprising: an inner tube including a first inner tube section and a second inner tube section connected together and having a guide wire lumen extending therethrough, the second inner tube section extending distally from the first inner tube section and having an outer diameter which is less than the outer diameter of the first inner tube section, the first and second inner tube sections having wall thicknesses less than about 0.002 inches and having a lubricious material on their inner surfaces; an outer tube positioned over the inner tube to define an inflation lumen between the inner tube and the outer tube, the outer tube having a first outer tube section having a wall thickness of less than about 0.002 inches and a second outer tube section positioned distally of the first outer tube section having a wall thickness of less than about 0.003 inches, the second outer tube section having greater flexibility than and made of material different than material of the first outer tube section; and a balloon having a proximal portion connected to a distal end of the second outer tube section and a distal portion connected to a distal end of the second inner tube section, the balloon being made of material different than material of the second outer tube section.
Claim 3
Dependent Claim
24 words
The dilatation catheter of claim 1 wherein the first inner tube section extends distally beyond a distal end of the first outer tube section.
Claim 4
Dependent Claim
18 words
The dilatation catheter of claim 1 wherein the first outer tube section is a thin wall metal tube.
Claim 5
Dependent Claim
17 words
The dilatation catheter of claim 3 wherein the first outer tube section is a stainless steel tube.
Claim 6
Dependent Claim
18 words
The dilatation catheter of claim 1 wherein the outer tube has a lubricious material as its outer surface.
Claim 7
Dependent Claim
20 words
The dilatation catheter of claim 5 wherein the lubricious materials as the outer surface of the outer tube is hydrophobic.
Claim 8
Dependent Claim
15 words
The dilatation catheter of claim 6 wherein the hydrophobic lubricious material is a polytetrafluoroethylene coating.
Claim 9
Dependent Claim
20 words
The dilatation catheter of claim 5 wherein the lubricious material as the outer surface of the outer tube is hydrophilic.
Claim 10
Dependent Claim
16 words
The dilatation catheter of claim 8 wherein the hydrophilic lubricious material is a polyacrylamide polyurethane substrate.
Claim 11
Dependent Claim
16 words
The dilatation catheter of claim 1 wherein the first outer tube section is a polyimide tube.
Claim 12
Dependent Claim
23 words
The dilatation catheter of claim 10 wherein the first outer tube section has a polyimide-polytetrafluoroethylene composite material as its outer surface for lubricity.
Claim 13
Dependent Claim
16 words
The dilatation catheter of claim 1 wherein the first inner tube section is a polyimide tube.
Claim 14
Dependent Claim
12 words
The dilatation catheter of claim 12 wherein the lubricious material is hydrophobic.
Claim 15
Dependent Claim
15 words
The dilatation catheter of claim 13 wherein the hydrophobic lubricious material is a polyimidepolytetrafluoroethylene composite.
Claim 16
Dependent Claim
11 words
The dilatation of claim 12 wherein the lubricious material is hydrophilic.
Claim 17
Dependent Claim
15 words
The dilatation of claim 15 wherein the hydrophilic lubricious material is a polyacrylamide polyurethane substrate.
Claim 18
Dependent Claim
16 words
The dilatation catheter of claim 1 wherein the first inner tube section is a metal tube.
Claim 19
Dependent Claim
12 words
The dilatation catheter of claim 17 wherein the lubricious material is hydrophobic.
Claim 20
Dependent Claim
15 words
The dilatation catheter of claim 18 wherein the hydrophobic lubricious material is a polyimidepolytetrafluoroethylene composite.
Claim 21
Dependent Claim
15 words
The dilatation catheter of claim 18 wherein the second outer tube is a polyethylene tube.
Claim 22
Dependent Claim
22 words
The dilatation catheter of claim 20 wherein the polyethylene second outer tube has an outer coating of a polyimide-polytetrafluoroethylene composite for lubricity.
Claim 23
Dependent Claim
12 words
The dilatation catheter of claim 17 wherein the lubricious material is hydrophilic.
Claim 24
Dependent Claim
16 words
The dilatation catheter of claim 22 wherein the hydrophilic lubricious material is a polyacrylamide polyurethane substrate.
Claim 25
Dependent Claim
18 words
The dilatation catheter of claim 1 wherein the second outer tube section is a high density polyethylene tube.
Claim 26
Dependent Claim
16 words
The dilatation catheter of claim 1 wherein the second inner tube section is a polyimide tube.
Claim 27
Dependent Claim
12 words
The dilatation catheter of claim 25 wherein the lubricious material is hydrophobic.
Claim 28
Dependent Claim
15 words
The dilatation catheter of claim 26 wherein the hydrophobic lubricious material is a polyimidepolytetrafluoroethylene composite.
Claim 29
Dependent Claim
12 words
The dilatation catheter of claim 25 wherein the lubricious material is hydrophilic.
Claim 30
Dependent Claim
16 words
The dilatation catheter of claim 28 wherein the hydrophilic lubricious material is a polyacrylamide polyurethane substrate.
Claim 31
Dependent Claim
68 words
The dilatation catheter of claim 1 wherein the first outer tube section is a metal tube, the first inner tube section is a polyimide tube having a polyimide-polytetrafluoroethylene composite material on an inner wall surface thereof, the second outer tube section is a high density polyethylene tube, and the second inner tube section is a polyimide tube having a polyimide-polytetrafluoroethylene composite material on an inner wall surface thereof.
Claim 32
Dependent Claim
13 words
The dilatation catheter of claim 1 wherein the balloon is a polyimide balloon.
Claim 33
Dependent Claim
182 words
A dilatation catheter comprising: a first outer tube having a wall thickness of less than about 0.002 inches; a first inner tube extending through the first outer tube, the first inner tube having a wall thickness of less than about 0.002 inches; a second outer tube having proximal and distal ends, having greater flexibility than and made of material different than material of the first outer tube, and having its proximal end connected to a distal end of the first outer tube; a second inner tube having proximal and distal ends, having a wall thickness of less than about 0.002 inches, and having an outer diameter which is less than an outer diameter of the first inner tube, the proximal end of the second inner tube being connected to a distal end of the first inner tube; and a balloon having a proximal portion connected to the distal end of the second outer tube and a distal portion connected to the distal end of the second inner tube, the balloon being made of material different than material of the second outer tube.
Claim 34
Dependent Claim
182 words
A dilatation catheter comprising: a first outer tube having a wall thickness of less than about 0.002 inches; a first inner tube extending through the first outer tube, the first inner tube having a wall thickness of less than about 0.002 inches; a second outer tube having proximal and distal ends, having greater flexibility than and made of material different than material of the first outer tube, and having its proximal end connected to a distal end of the first outer tube; a second inner tube having proximal and distal ends, having a wall thickness of less than about 0.002 inches, and having an outer diameter which is less than an outer diameter of the first inner tube, the proximal end of the second inner tube being connected to a distal end of the first inner tube; and a balloon having a proximal portion connected to the distal end of the second outer tube and a distal portion connected to the distal end of the second inner tube, the balloon being made of material different than material of the second outer tube.
Claim 35
Dependent Claim
23 words
The dilatation catheter of claim 32 wherein the first inner tube extends through the first outer tube and into the second outer tube.
Claim 36
Dependent Claim
18 words
The dilatation catheter of claim 32 wherein the first and second inner tubes have lubricious inner wall surfaces.
Claim 37
Dependent Claim
16 words
The dilatation catheter of claim 32 wherein the first and second inner tubes are polyimide tubes.
Claim 38
Dependent Claim
19 words
The dilatation catheter of claim 35 wherein the polyimide tubes have an inner wall of a polyimidepolytetrafluoroethylene composite material.
Claim 39
Dependent Claim
15 words
The dilatation catheter of claim 32 wherein the first outer tube is a metal tube.
Claim 40
Dependent Claim
19 words
The dilatation catheter of claim 32 wherein the first outer tube has an outer coating of polytetrafluoroethylene for lubricity.
Claim 41
Dependent Claim
21 words
The dilatation catheter of claim 32 wherein the first outer tube has an outer coating of a polyimide-polytetrafluoroethylene composite for lubricity.
Claim 42
Dependent Claim
17 words
The dilatation catheter of claim 32 wherein the first and second outer tubes have lubricious outer surfaces.
Claim 43
Dependent Claim
15 words
The dilatation catheter of claim 32 wherein the first inner tube is a metal tube.
Claim 44
Dependent Claim
18 words
The dilatation catheter of claim 41 wherein the metal tube has an inner coating of polytetrafluoroethylene for lubricity.
Claim 45
Dependent Claim
13 words
The dilatation catheter of claim 32 wherein the balloon is a polyimide balloon.
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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) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |