Patent US5334147A successfully refreshed from Google Patents.
US5334147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid exchange type dilatation catheter
Assignee: Cordis Corp
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Filing: 1993-04-28
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Granted: 1994-08-02
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Expires: 2013-04-28
Abstract
Abstract A balloon dilatation catheter defines an inflation lumen communicating with its balloon, and a guidewire lumen extending along the catheter. An aperture portion is defined in the catheter shaft between the guidewire lumen and the catheter exterior, the aperture portion being covered by a frangible wall that is typically thinner than the rest of the tubular catheter shaft wall. The catheter may be used in either the conventional over-the-wire technique or the "rapid exchange" technique of balloon angioplasty.
Inventors
- 👤 Kirk L. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:21
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/01; A61M2025/0183; A61M2025/1043; A61M2025/107; A61M2025/1081
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
A balloon dilatation catheter having proximal and distal ends, which comprises a flexible, tubular wall defining a catheter shaft, which shaft carries a dilatation balloon adjacent the distal end, said catheter shaft defining an inflation lumen communicating with said balloon and a guidewire lumen extending substantially the length of said catheter and extending through the catheter distal end; and an aperture portion defined in said catheter shaft communicating between said guidewire lumen and the catheter exterior, said aperture portion being covered by a frangible wall.
Claim 2
Dependent Claim
85 words
A balloon dilatation catheter having proximal and distal ends, which comprises a flexible, tubular wall defining a catheter shaft, which shaft carries a dilatation balloon adjacent the distal end, said catheter shaft defining an inflation lumen communicating with said balloon and a guidewire lumen extending substantially the length of said catheter and extending through the catheter distal end; and an aperture portion defined in said catheter shaft communicating between said guidewire lumen and the catheter exterior, said aperture portion being covered by a frangible wall.
Claim 3
Dependent Claim
26 words
The catheter of claim 1 in which a proximal portion of said guidewire lumen carries a support mandrel, the remainder of said guidewire lumen being unoccupied.
Claim 4
Dependent Claim
25 words
The catheter of claim 2 in which said support mandrel defines a tapered distal end to assist in urging the guidewire through said aperture portion.
Claim 5
Dependent Claim
17 words
The catheter of claim 2 in which said support mandrel extends distally to essentially said aperture portion.
Claim 6
Dependent Claim
23 words
The catheter of claim 2 in which said support mandrel is removable, to permit use of said catheter in a conventional, over-the-wire manner.
Claim 7
Dependent Claim
24 words
The catheter of claim 1 in which said frangible wall is part of a tubular sleeve surrounding said catheter and overlying said aperture portion.
Claim 8
Dependent Claim
161 words
A balloon dilatation catheter having proximal and distal ends, which comprises, a flexible tubular wall defining a catheter shaft, which shaft carries a dilatation balloon adjacent the distal end, said catheter shaft defining an inflation lumen communicating with said balloon and a guidewire lumen extending substantially the length of said catheter and extending through the catheter distal end, an aperture portion defined in said catheter shaft communicating between said guidewire lumen and the catheter exterior, said catheter being surrounded by a tubular sleeve overlying said aperture portion, to define a frangible wall covering said aperture portion, a portion of the guidewire lumen proximal to the aperture portion carrying a removable support mandrel, the remainder of said guidewire lumen being unoccupied, whereby upon removal of said support mandrel said catheter may be used in a conventional over-the-wire manner, and upon breaking of said frangible wall and passing a guidewire through said aperture portion, the catheter may be used in "rapid exchange" manner.
Claim 9
Dependent Claim
161 words
A balloon dilatation catheter having proximal and distal ends, which comprises, a flexible tubular wall defining a catheter shaft, which shaft carries a dilatation balloon adjacent the distal end, said catheter shaft defining an inflation lumen communicating with said balloon and a guidewire lumen extending substantially the length of said catheter and extending through the catheter distal end, an aperture portion defined in said catheter shaft communicating between said guidewire lumen and the catheter exterior, said catheter being surrounded by a tubular sleeve overlying said aperture portion, to define a frangible wall covering said aperture portion, a portion of the guidewire lumen proximal to the aperture portion carrying a removable support mandrel, the remainder of said guidewire lumen being unoccupied, whereby upon removal of said support mandrel said catheter may be used in a conventional over-the-wire manner, and upon breaking of said frangible wall and passing a guidewire through said aperture portion, the catheter may be used in "rapid exchange" manner.
Claim 10
Dependent Claim
17 words
The catheter of claim 7 in which said support mandrel extends distally to essentially said aperture portion.
Claim 11
Dependent Claim
25 words
The catheter of claim 8 in which said support mandrel defines a tapered distal end to assist in urging he guidewire through said aperture portion.
Claim 12
Dependent Claim
19 words
The catheter of claim 9 in which said frangible wall is thinner than the wall of said catheter shaft.
Claim 13
Dependent Claim
18 words
The catheter of claim 7 which said frangible wall is thinner than the wall of said catheter shaft.
Claim 14
Dependent Claim
19 words
The catheter of claim 1 in which said frangible wall is thinner than the wall of said catheter shaft.
References Cited (Backward Citations)
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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) | 1997-08-01 | 1998-01-31 | 1998-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-01 | 2002-01-31 | 2002-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-01 | 2006-01-31 | 2006-08-02 | $7700.00 | Window Closed / Lapsed |