US5575771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balloon catheter with external guidewire
Assignee: Individual
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Filing: 1995-04-24
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Granted: 1996-11-19
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Expires: 2015-04-24
Abstract
Abstract A catheter (10) for use with a guidewire (40) includes an elongated, flexible body (12a) defining distal and proximal ends, and also defining a balloon inflation lumen (14) extending therethrough. A balloon (24) is affixed near the distal end, at a location selected so that an extending portion (12b) of the catheter extends distally beyond the balloon. A guidewire retaining arrangement (30) is located on an exterior part of the extending portion (12b) of the catheter, for allowing the catheter to slide relative to the guidewire, while being maintained adjacent thereto. In a particular embodiment of the invention, the balloon (24) has a perfusion channel (22) extending from a distal side (16) of the balloon to the proximal side. The perfusion channel may have walls which have different compliance than the remainder of the balloon. In an embodiment with a lobed balloon (724), the guidewire retaining arrangements are located so as to direct the guidewire between the lobes of the balloon.
Inventors
- 👤 Paul Walinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:50
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1002
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
190 words
A balloon catheter adapted for use with a guidewire, said catheter comprising: an elongated, flexible body defining a distal end and a proximal end, and also defining a balloon inflation lumen extending from a location near said proximal end of said body to a location near said distal end of said body; an extending portion of said body extending distally from said elongated, flexible body; a balloon including an expansible portion, said balloon being affixed at a location near said distal end of said body, with the interior of said balloon in communication with said balloon inflation lumen, said location being selected so that said extending portion of said catheter extends distally beyond said expansible portion of said balloon; and guidewire retaining means located on said extending portion of said catheter, said retaining means being dimensioned for allowing said extending portion to slide relative to said guidewire, while being maintained adjacent thereto; wherein said balloon includes a perfusion channel extending through said balloon from a distal side of said balloon to a proximal side of said balloon, and said perfusion channel does not extend though said body of said catheter.
Claim 2
Dependent Claim
190 words
A balloon catheter adapted for use with a guidewire, said catheter comprising: an elongated, flexible body defining a distal end and a proximal end, and also defining a balloon inflation lumen extending from a location near said proximal end of said body to a location near said distal end of said body; an extending portion of said body extending distally from said elongated, flexible body; a balloon including an expansible portion, said balloon being affixed at a location near said distal end of said body, with the interior of said balloon in communication with said balloon inflation lumen, said location being selected so that said extending portion of said catheter extends distally beyond said expansible portion of said balloon; and guidewire retaining means located on said extending portion of said catheter, said retaining means being dimensioned for allowing said extending portion to slide relative to said guidewire, while being maintained adjacent thereto; wherein said balloon includes a perfusion channel extending through said balloon from a distal side of said balloon to a proximal side of said balloon, and said perfusion channel does not extend though said body of said catheter.
Claim 3
Dependent Claim
22 words
A catheter according to claim 1, wherein said perfusion channel has walls which have lesser compliance than the remainder of said balloon.
Claim 4
Dependent Claim
30 words
A catheter according to claim 1, wherein said retaining means comprises a loop defining an aperture, the diameter of said aperture being no less than the diameter of said guidewire.
Claim 5
Dependent Claim
15 words
A catheter according to claim 1, wherein said extending portion of said catheter is skeletonized.
Claim 6
Dependent Claim
161 words
A balloon catheter adapted for use with a guidewire, comprising: an elongated, flexible body defining a distal end and a proximal end, and also defining a balloon inflation lumen extending from a location near said proximal end of said body to a location near said distal end of said body; a skeletonized extending portion of said body extending distally from said elongated, flexible body; a balloon including an expansible portion, said balloon being affixed at a location near said distal end of said body, with the interior of said balloon in communication with said balloon inflation lumen, said location being selected so that said extending portion of said catheter extends distally beyond said expansible portion of said balloon; and guidewire retaining means located on said extending portion of said catheter, said retaining means being dimensioned for allowing said extending portion to slide relative to said guidewire, while being maintained adjacent thereto; wherein said extending portion of said catheter is a wire.
Claim 7
Dependent Claim
161 words
A balloon catheter adapted for use with a guidewire, comprising: an elongated, flexible body defining a distal end and a proximal end, and also defining a balloon inflation lumen extending from a location near said proximal end of said body to a location near said distal end of said body; a skeletonized extending portion of said body extending distally from said elongated, flexible body; a balloon including an expansible portion, said balloon being affixed at a location near said distal end of said body, with the interior of said balloon in communication with said balloon inflation lumen, said location being selected so that said extending portion of said catheter extends distally beyond said expansible portion of said balloon; and guidewire retaining means located on said extending portion of said catheter, said retaining means being dimensioned for allowing said extending portion to slide relative to said guidewire, while being maintained adjacent thereto; wherein said extending portion of said catheter is a wire.
Claim 8
Dependent Claim
18 words
A catheter according to claim 5, wherein said guidewire retaining means comprises a loop formed in said wire.
Claim 9
Dependent Claim
25 words
A catheter according to claim 1, wherein said guidewire retaining means comprises a notch in the wall of said perfusion channel distal to said balloon.
Claim 10
Dependent Claim
178 words
A catheter including a perfusion portion defining a channel for the flow of fluids, said catheter being adapted for use with a guidewire, said catheter comprising: an elongated, flexible body defining a distal end and a proximal end, and also defining a balloon inflation lumen extending from a location near said proximal end of said body to a location near said distal end of said body; a balloon including an inflatable portion affixed at a location near said distal end of said body, with the interior of said inflatable portion of said balloon in communication with said balloon inflation lumen, said location being selected so that said perfusion portion of said catheter extends through said balloon, and distally beyond said inflatable portion of said balloon, but not through said body of said catheter; and guidewire retaining means supported on said perfusion portion of said catheter at a location more distal than said inflatable portion of said balloon, said retaining means being dimensioned for allowing said perfusion portion to slide relative to said guidewire, while being maintained adjacent thereto.
Claim 11
Dependent Claim
178 words
A catheter including a perfusion portion defining a channel for the flow of fluids, said catheter being adapted for use with a guidewire, said catheter comprising: an elongated, flexible body defining a distal end and a proximal end, and also defining a balloon inflation lumen extending from a location near said proximal end of said body to a location near said distal end of said body; a balloon including an inflatable portion affixed at a location near said distal end of said body, with the interior of said inflatable portion of said balloon in communication with said balloon inflation lumen, said location being selected so that said perfusion portion of said catheter extends through said balloon, and distally beyond said inflatable portion of said balloon, but not through said body of said catheter; and guidewire retaining means supported on said perfusion portion of said catheter at a location more distal than said inflatable portion of said balloon, said retaining means being dimensioned for allowing said perfusion portion to slide relative to said guidewire, while being maintained adjacent thereto.
Claim 12
Dependent Claim
67 words
A catheter according to claim 8, wherein: said perfusion portion of said catheter comprises a tube including distal and proximal perfusion apertures, said tube being affixed to said body at a junction extending along a proximal portion of the length of said tube and a distal portion of the length of said body, with said distal and proximal perfusion apertures outside said expansible portion of said balloon.
Claim 13
Dependent Claim
32 words
A catheter according to claim 9, wherein: said guidewire retaining means is affixed to an exterior portion of said tube at a location more distal than said inflatable portion of said balloon.
Claim 14
Dependent Claim
22 words
A catheter according to claim 9, wherein: said guidewire retaining means comprises a loop contiguous with an outer surface of said tube.
Claim 15
Dependent Claim
24 words
A catheter according to claim 9, wherein said retaining means comprises a notch in the wall of said perfusion channel distal to said balloon.
Claim 16
Dependent Claim
67 words
A catheter according to claim 9, wherein: said tube has a circular cross-section defining an axis, and wherein said axis of said tube extends parallel to the direction of elongation of the distal end of said body: and wherein said balloon is affixed to said body and to said tube at said junction, and is affixed to said tube at a location more distal than said junction.
Claim 17
Dependent Claim
22 words
A catheter according to claim 13, wherein said guidewire retaining means comprises a loop contiguous with an outer surface of said tube.
Claim 18
Dependent Claim
25 words
A catheter according to claim 15, wherein said loop defines a plane which is perpendicular to a radius extending from said axis of said tube.
Claim 19
Dependent Claim
22 words
A catheter according to claim 8, wherein said perfusion portion is a channel defined, in part, by a lobe of said balloon.
Claim 20
Dependent Claim
17 words
A catheter according to claim 15, wherein said guidewire retaining means is circumferentially aligned with said channel.
Claim 21
Dependent Claim
31 words
A catheter according to claim 16, wherein said guidewire retaining means is circumferentially aligned with said channel, whereby the guidewire lies along said channel defined by said lobe of said 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) | 1999-11-19 | 2000-05-20 | 2000-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-19 | 2004-05-20 | 2004-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-19 | 2008-05-20 | 2008-11-19 | $7700.00 | Window Closed / Lapsed |