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US5344402A
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US
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Low profile perfusion catheter
Assignee: Endologix LLC
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Filing: 1993-06-30
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Granted: 1994-09-06
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Expires: 2013-06-30
Abstract
Abstract Disclosed is a Low Profile Perfusion Catheter, for use in coronary angioplasty applications. Preferably, the catheter is provided with an inflatable dilatation balloon, and a perfusion lumen extending therethrough. The diameter of the perfusion lumen is enlargable from a first, reduced diameter to a second, enlarged diameter. In one embodiment, an axially movable tubular support is movable within the lumen from a proximal, insertion position to a distal perfusion position. In another embodiment, the support is radially expandable. In a further embodiment, a porus drug delivery balloon is provided.
Inventors
- 👤 Michael Crocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:59
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/1011; A61M2025/1043; A61M2025/1063; A61M2025/1075; A61M2025/1097
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
A balloon catheter, comprising: an elongate, flexible, tubular body; an inflatable balloon on the tubular body, said balloon expandable from a first, reduced diameter to a second, enlarged diameter; and a perfusion conduit extending through said inflatable balloon, at least a portion of said perfusion conduit expandable from a first reduced diameter to a second enlarged diameter; wherein said second, enlarged diameter of said perfusion conduit is larger than the first, reduced outer diameter of said deflated balloon.
Claim 2
Dependent Claim
78 words
A balloon catheter, comprising: an elongate, flexible, tubular body; an inflatable balloon on the tubular body, said balloon expandable from a first, reduced diameter to a second, enlarged diameter; and a perfusion conduit extending through said inflatable balloon, at least a portion of said perfusion conduit expandable from a first reduced diameter to a second enlarged diameter; wherein said second, enlarged diameter of said perfusion conduit is larger than the first, reduced outer diameter of said deflated balloon.
Claim 3
Dependent Claim
22 words
A balloon catheter as in claim 1, further comprising a tubular support for maintaining said perfusion conduit in the second enlarged diameter.
Claim 4
Dependent Claim
35 words
A balloon catheter as in claim 2, wherein the support is movable from a first position proximal of the balloon to a second position within a portion of the perfusion conduit extending through the balloon.
Claim 5
Dependent Claim
22 words
A balloon catheter as in claim 3, further comprising a control for moving said support from the first to the second position.
Claim 6
Independent Claim
156 words
A method of treating a site in a body lumen, comprising the steps of: providing a catheter of the type having an elongate, flexible, tubular body, a dilatation balloon on the body, and at least one influent port on a first side of the balloon in fluid communication with at least one effluent port on a second side of the balloon, said influent and effluent ports in fluid communication with each other by way of a central lumen extending through the catheter; positioning the catheter within a body lumen so that the balloon is adjacent a treatment site; inflating the balloon to treat the site; and holding the central lumen open to resist collapse and optimize fluid flow therethrough, wherein said holding step comprises positioning a support structure within the lumen to maintain patency of the lumen by moving the support structure from a proximal insertion position to a distal perfusion position within the central lumen.
Claim 7
Independent Claim
156 words
A method of treating a site in a body lumen, comprising the steps of: providing a catheter of the type having an elongate, flexible, tubular body, a dilatation balloon on the body, and at least one influent port on a first side of the balloon in fluid communication with at least one effluent port on a second side of the balloon, said influent and effluent ports in fluid communication with each other by way of a central lumen extending through the catheter; positioning the catheter within a body lumen so that the balloon is adjacent a treatment site; inflating the balloon to treat the site; and holding the central lumen open to resist collapse and optimize fluid flow therethrough, wherein said holding step comprises positioning a support structure within the lumen to maintain patency of the lumen by moving the support structure from a proximal insertion position to a distal perfusion position within the central lumen.
Claim 8
Dependent Claim
117 words
A catheter comprising: an elongate, flexible, tubular body; a central lumen extending through at least a portion of the body; at least one influent port extending through the wall of the tubular body and communicating with said central lumen; at least one effluent port extending through the wall of the tubular body and communicating with the central lumen; wherein the central lumen is expandable from a first, reduced fluid flow capacity to a second, increased fluid capacity; and a support for maintaining the central lumen in the second, increased fluid flow capacity; wherein said support is axially moveable from a first, proximal position to a second, distal position, wherein said distal position is within said central lumen.
Claim 9
Dependent Claim
117 words
A catheter comprising: an elongate, flexible, tubular body; a central lumen extending through at least a portion of the body; at least one influent port extending through the wall of the tubular body and communicating with said central lumen; at least one effluent port extending through the wall of the tubular body and communicating with the central lumen; wherein the central lumen is expandable from a first, reduced fluid flow capacity to a second, increased fluid capacity; and a support for maintaining the central lumen in the second, increased fluid flow capacity; wherein said support is axially moveable from a first, proximal position to a second, distal position, wherein said distal position is within said central lumen.
Claim 10
Dependent Claim
13 words
A catheter as in claim 6, wherein said support comprises a spring coil.
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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) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |