US5209729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dilatation catheter
Assignee: Schneider Europe GmbH
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Filing: 1991-08-05
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Granted: 1993-05-11
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Expires: 2011-08-05
Abstract
Abstract The dilatation catheter has a shaft which consists of two separately produced shaft portions. Both portions have a first lumen for a guide wire and a second lumen for a pressure liquid. The two portions overlap at a connection point and are preferably welded to one another at this point. The proximal portion consists of two coaxial tube portions and the distal portion consists of an extruded two-lumen tube piece. The proximal portion is stiffer than the distal portion, which permits an optimal adaptation to a non-straight course of a blood vessel. The dilatation catheter according to the invention is particularly suitable for the treatment of arterial occlusions, which are situated in or downstream of a vessel curve.
Inventors
- 👤 Eugen Hofmann
- 👤 Susanne Pfenninger
- 👤 Werner Niederhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:20
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/0009; A61M25/0014
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
144 words
A dilation catheter for percutaneous transluminal recanalization of chronic arterial occlusions comprising a shaft having proximal and distal ends and a first shaft lumen extending therebetween, a dilatation balloon located proximate said distal end, with said first shaft lumen being adapted to receive a guide wire and with said shaft having a second shaft lumen for pressurizing said balloon, said shaft comprising at least two separately produced segments connected to one another wherein said segments include a proximal portion having two coaxial tube pieces defining inner and outer lumens and a more flexible distal portion having a two-lumen tube piece, said portions being connected to one another such that a first lumen of the distal portion is connected to said inner lumen of the proximal portion, and a second lumen of the distal portion is connected to said outer lumen of the proximal portion.
Claim 2
Dependent Claim
144 words
A dilation catheter for percutaneous transluminal recanalization of chronic arterial occlusions comprising a shaft having proximal and distal ends and a first shaft lumen extending therebetween, a dilatation balloon located proximate said distal end, with said first shaft lumen being adapted to receive a guide wire and with said shaft having a second shaft lumen for pressurizing said balloon, said shaft comprising at least two separately produced segments connected to one another wherein said segments include a proximal portion having two coaxial tube pieces defining inner and outer lumens and a more flexible distal portion having a two-lumen tube piece, said portions being connected to one another such that a first lumen of the distal portion is connected to said inner lumen of the proximal portion, and a second lumen of the distal portion is connected to said outer lumen of the proximal portion.
Claim 3
Dependent Claim
25 words
The dilatation catheter according to claim 1 wherein the two portions overlap at their connection point and are welded to one another along adjacent surfaces.
Claim 4
Dependent Claim
25 words
The dilatation catheter according to claim 2 wherein at least one portion has a reduced wall thickness at the end connected to the other portion.
Claim 5
Dependent Claim
25 words
The dilatation catheter according to claim 3 wherein the end of the distal portion connected to the proximal portion is stretched in the longitudinal direction.
Claim 6
Dependent Claim
48 words
The dilatation catheter according to claim 3 wherein, at the connection point, the inner tube piece of the proximal portion is inserted into a first lumen of the distal portion and said outer lumen of the proximal portion is connected to a second lumen of the distal portion.
Claim 7
Dependent Claim
48 words
The dilatation catheter according to claim 2 wherein, at the connection point, the inner tube piece of the proximal portion is inserted into a first lumen of the distal portion and said outer lumen of the proximal portion is connected to a second lumen of the distal portion.
Claim 8
Dependent Claim
25 words
The dilatation catheter according to claim 1 wherein at least one portion has a reduced wall thickness at the end connected to the other portion.
Claim 9
Dependent Claim
25 words
The dilatation catheter according to claim 7 wherein the end of the distal portion connected to the proximal portion is stretched in the longitudinal direction.
Claim 10
Dependent Claim
48 words
The dilatation catheter according to claim 7 wherein, at the connection point, the inner tube piece of the proximal portion is inserted into a first lumen of the distal portion and said outer lumen of the proximal portion is connected to a second lumen of the distal portion.
Claim 11
Dependent Claim
16 words
The dilatation catheter according to claim 1 wherein the two portions are glued to one another.
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) | 1996-05-10 | 1996-11-09 | 1997-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-10 | 2000-11-09 | 2001-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-10 | 2004-11-09 | 2005-05-11 | $7700.00 | Window Closed / Lapsed |