Patent US5833644A successfully refreshed from Google Patents.
US5833644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for emboli containment
Assignee: Medtronic Vascular Inc
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Filing: 1997-03-06
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Granted: 1998-11-10
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Expires: 2017-03-06
Abstract
Abstract A multi-catheter emboli containment system is disclosed in which a treatment chamber within a blood vessel is formed by at least two occlusion balloons on opposite sides of a stenotic lesion, thereby preventing emboli migration during the treatment procedure. Irrigation and aspiration are provided to remove emboli and debris from the chamber. The irrigation and aspiration can be provided through separate catheters, or, the catheters used to create the chamber, together with the catheter used to provide therapy to the stenosis can be used. The catheters are all sized so as to be concentric, slidably disposed with respect to one another, and able to be delivered into blood vessels less than 25 mm in diameter or even smaller.
Inventors
- 👤 Gholam-Reza Zadno-Azizi
- 👤 Celso J. Bagaoisan
- 👤 Ketan P. Muni
- 👤 Jefferey C. Bleam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:43
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61M; A61M25/00; A61M25/0009; A61M25/0043; A61M25/0054; A61M25/0067; A61M25/0074; A61M25/0075; A61M25/01; A61M25/09; A61M25/09016; A61M25/09033; A61M25/10; A61M25/1011; A61M25/104; B; B29; B29C; B29C55/00; B29C55/02; B29C55/04; A61B2017/22051; A61B2017/22065; A61B2017/22067; A61B2017/22082; A61B2017/22084; A61B2217/00; A61B2217/002; A61B2217/005; A61M2025/0018; A61M25/008; A61M2025/0081; A61M2025/0183; A61M2025/09008; A61M2025/09175; A61M2025/1015; A61M25/1027; A61M25/1029; A61M2025/1031; A61M2025/1043; A61M2025/1052; A61M2025/1079; A61M2025/109; A61M2025/1093; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/0068; A61M25/007
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
72 words
A method for containing and removing an occlusion within a blood vessel comprising: creating a chamber within said vessel between at least two occlusive devices positioned on either side of said occlusion, said chamber being of adjustable length; and providing irrigation fluid at one end of said chamber while providing aspiration at the other end of said chamber, creating a pressure change within said chamber that does not exceed about 50 psi.
Claim 2
Independent Claim
72 words
A method for containing and removing an occlusion within a blood vessel comprising: creating a chamber within said vessel between at least two occlusive devices positioned on either side of said occlusion, said chamber being of adjustable length; and providing irrigation fluid at one end of said chamber while providing aspiration at the other end of said chamber, creating a pressure change within said chamber that does not exceed about 50 psi.
Claim 3
Dependent Claim
33 words
The method of claim 1, wherein proximal aspiration pressure is between about -10 and -30 in-Hg, and said irrigation fluid is provided at a proximal pressure of between about 5 and 30 psig.
Claim 4
Dependent Claim
14 words
The method of claim 1, wherein said chamber is created between two inflatable balloons.
Claim 5
Dependent Claim
16 words
The method of claim 1, wherein said vessel is less than about 25 mm in diameter.
Claim 6
Dependent Claim
14 words
The method of claim 1, wherein said vessel is about 6 mm in diameter.
Claim 7
Dependent Claim
15 words
The method of claim 1, wherein said aspiration and said irrigation fluid are delivered simultaneously.
Claim 8
Dependent Claim
14 words
The method of claim 1, wherein said aspiration is delivered in a discontinuous manner.
Claim 9
Dependent Claim
15 words
The method of claim 1, wherein said irrigation fluid is delivered in a discontinuous manner.
Claim 10
Independent Claim
151 words
A method for treating an occlusion and containing and removing emboli and debris from within a blood vessel comprising: delivering a main catheter having a first occlusive device on a distal end through said blood vessel until said occlusive device is proximal to said occlusion; activating said first occlusive device; delivering an inner catheter having a second occlusive device on a distal end through said blood vessel and across said occlusion until said second occlusive device is distal to said occlusion; activating said second occlusive device; delivering an intermediate catheter through said blood vessel until said intermediate catheter is at said occlusion; performing therapy on said occlusion using said intermediate catheter; providing irrigation fluid adjacent one of the occlusive devices while providing aspiration adjacent the other occlusive device to remove said occlusion and said emboli and debris, creating a pressure change within the vessel that does not exceed about 50 psi.
Claim 11
Independent Claim
151 words
A method for treating an occlusion and containing and removing emboli and debris from within a blood vessel comprising: delivering a main catheter having a first occlusive device on a distal end through said blood vessel until said occlusive device is proximal to said occlusion; activating said first occlusive device; delivering an inner catheter having a second occlusive device on a distal end through said blood vessel and across said occlusion until said second occlusive device is distal to said occlusion; activating said second occlusive device; delivering an intermediate catheter through said blood vessel until said intermediate catheter is at said occlusion; performing therapy on said occlusion using said intermediate catheter; providing irrigation fluid adjacent one of the occlusive devices while providing aspiration adjacent the other occlusive device to remove said occlusion and said emboli and debris, creating a pressure change within the vessel that does not exceed about 50 psi.
Claim 12
Dependent Claim
24 words
The method of claim 9, further comprising delivering a third occlusive device through said blood vessel to occlude a branch off said blood vessel.
Claim 13
Dependent Claim
33 words
The method of claim 9, further comprising the step of sizing said inner catheter and said intermediate catheter to provide an annulus therebetween, and wherein said irrigation fluid is provided through said annulus.
Claim 14
Dependent Claim
32 words
The method of claim 9, further comprising the step of sizing said intermediate catheter and said main catheter to provide an annulus therebetween, and wherein said aspiration is provided through said annulus.
Claim 15
Dependent Claim
32 words
The method of claim 9, further comprising the step of sizing said inner catheter and said intermediate catheter to provide an annulus therebetween, and wherein said aspiration is provided through said annulus.
Claim 16
Dependent Claim
33 words
The method of claim 9, further comprising the step of sizing said intermediate catheter and said main catheter to provide an annulus therebetween, and wherein said irrigation fluid is provided through said annulus.
Claim 17
Dependent Claim
12 words
The method of claim 9, wherein said inner catheter is a guidewire.
Claim 18
Dependent Claim
23 words
The method of claim 9, wherein at least a portion of said main catheter rides over said inner catheter during said delivery step.
Claim 19
Dependent Claim
23 words
The method of claim 9, wherein at least a portion of said intermediate catheter rides over said inner catheter during said delivery step.
Claim 20
Dependent Claim
44 words
The method of claim 9, further comprising the steps of removing said therapy catheter, deactivating said second occlusive device and removing said inner catheter, and deactivating said first occlusive device and removing said main catheter following the step of providing irrigation fluid and aspiration.
Claim 21
Dependent Claim
23 words
The method of claim 9, wherein said first and second occlusive devices are inflatable balloons, and the activating steps comprise inflating said balloons.
Claim 22
Dependent Claim
38 words
The method of claim 9, further comprising the step of removing said intermediate catheter following said performing therapy step, and delivering an irrigation catheter into said chamber, such that said irrigation fluid is provided through said irrigation catheter.
Claim 23
Dependent Claim
37 words
The method of claim 9, further comprising the step of removing said intermediate catheter following said performing therapy step, and delivering an aspiration catheter into said chamber, such that said aspiration is provided through said aspiration catheter.
Claim 24
Independent Claim
161 words
A method for treating an occlusion and containing and removing emboli and debris from within a blood vessel comprising; delivering an inner catheter having a first occlusive device on a distal end through said blood vessel until said first occlusive device is proximal to said occlusion; delivering a main catheter having a second occlusive device on a distal end through said blood vessel until said second occlusive device is proximal to said occlusion; activating said second occlusive device; positioning said first occlusive device distal to said occlusion; activating said first occlusive device; delivering an intermediate catheter through said blood vessel until said intermediate catheter is at said occlusion; performing therapy on said occlusion using said intermediate catheter to reduce said occlusion; providing irrigation fluid adjacent one of the occlusive devices while providing aspiration adjacent the other occlusive device to remove said occlusion and said emboli and debris, creating a pressure change within the vessel that does not exceed about 50 psi.
Claim 25
Independent Claim
161 words
A method for treating an occlusion and containing and removing emboli and debris from within a blood vessel comprising; delivering an inner catheter having a first occlusive device on a distal end through said blood vessel until said first occlusive device is proximal to said occlusion; delivering a main catheter having a second occlusive device on a distal end through said blood vessel until said second occlusive device is proximal to said occlusion; activating said second occlusive device; positioning said first occlusive device distal to said occlusion; activating said first occlusive device; delivering an intermediate catheter through said blood vessel until said intermediate catheter is at said occlusion; performing therapy on said occlusion using said intermediate catheter to reduce said occlusion; providing irrigation fluid adjacent one of the occlusive devices while providing aspiration adjacent the other occlusive device to remove said occlusion and said emboli and debris, creating a pressure change within the vessel that does not exceed about 50 psi.
Claim 26
Dependent Claim
33 words
The method of claim 22, further comprising the step of sizing said inner catheter and said intermediate catheter to provide an annulus therebetween, and wherein said irrigation fluid is provided through said annulus.
Claim 27
Dependent Claim
32 words
The method of claim 22, further comprising the step of sizing said intermediate catheter and said main catheter to provide an annulus therebetween, and wherein said aspiration is provided through said annulus.
Claim 28
Dependent Claim
32 words
The method of claim 22, further comprising the step of sizing said inner catheter and said intermediate catheter to provide an annulus therebetween, and wherein said aspiration is provided through said annulus.
Claim 29
Dependent Claim
33 words
The method of claim 22, further comprising the step of sizing said intermediate catheter and said main catheter to provide an annulus therebetween, and wherein said irrigation fluid is provided through said annulus.
Claim 30
Dependent Claim
16 words
The method of claim 22, wherein said vessel is less than about 25 mm in diameter.
Claim 31
Dependent Claim
23 words
The method of claim 22, wherein said first and second occlusive devices are inflatable balloons, and the activating steps comprise inflating said balloons.
Claim 32
Dependent Claim
38 words
The method of claim 22, further comprising the step of removing said intermediate catheter following said performing therapy step, and delivering an irrigation catheter into said chamber, such that said irrigation fluid is provided through said irrigation catheter.
Claim 33
Dependent Claim
38 words
The method of claim 22, further comprising the step of removing said intermediate catheter following said performing therapy step, and delivering an aspiration catheter into said chamber, such that said aspiration pressure is provided through said aspiration catheter.
Claim 34
Independent Claim
149 words
A method for treating an occlusion and containing and removing emboli and debris from within a blood vessel comprising: delivering an inner catheter having a first occlusive device on a distal end through said blood vessel until said first occlusive device is distal to said occlusion; delivering a main catheter having a second occlusive device on a distal end through said blood vessel until said second occlusive device is proximal to said occlusion; activating said first and second occlusive devices; delivering an intermediate catheter through said blood vessel until said intermediate catheter is at said occlusion; performing therapy on said occlusion using said intermediate catheter to reduce said occlusion; providing irrigation fluid adjacent one of the occlusive devices while providing aspiration adjacent the other occlusive device to remove said occlusion and said emboli and debris, creating a pressure change within the vessel that does not exceed about 50 psi.
Claim 35
Independent Claim
149 words
A method for treating an occlusion and containing and removing emboli and debris from within a blood vessel comprising: delivering an inner catheter having a first occlusive device on a distal end through said blood vessel until said first occlusive device is distal to said occlusion; delivering a main catheter having a second occlusive device on a distal end through said blood vessel until said second occlusive device is proximal to said occlusion; activating said first and second occlusive devices; delivering an intermediate catheter through said blood vessel until said intermediate catheter is at said occlusion; performing therapy on said occlusion using said intermediate catheter to reduce said occlusion; providing irrigation fluid adjacent one of the occlusive devices while providing aspiration adjacent the other occlusive device to remove said occlusion and said emboli and debris, creating a pressure change within the vessel that does not exceed about 50 psi.
Claim 36
Dependent Claim
33 words
The method of claim 31, further comprising the step of sizing said inner catheter and said intermediate catheter to provide an annulus therebetween, and wherein said irrigation fluid is provided through said annulus.
Claim 37
Dependent Claim
32 words
The method of claim 31, further comprising the step of sizing said intermediate catheter and said main catheter to provide an annulus therebetween, and wherein said aspiration is provided through said annulus.
Claim 38
Independent Claim
126 words
A method for treating an occlusion and containing and removing emboli and debris from within a blood vessel comprising: delivering a main catheter having a first occlusive device on a distal end through said blood vessel until said occlusive device is proximal to said occlusion; activating said first occlusive device; delivering an inner catheter having a second occlusive device on a distal end through said blood vessel and across said occlusion until said second occlusive device is distal to said occlusion; activating said second occlusive device to form a chamber within said blood vessel; delivering an intermediate catheter through said blood vessel into said chamber to treat said occlusion, wherein said intermediate catheter creates a pressure change within said chamber which does not exceed 50 psi.
Claim 39
Independent Claim
126 words
A method for treating an occlusion and containing and removing emboli and debris from within a blood vessel comprising: delivering a main catheter having a first occlusive device on a distal end through said blood vessel until said occlusive device is proximal to said occlusion; activating said first occlusive device; delivering an inner catheter having a second occlusive device on a distal end through said blood vessel and across said occlusion until said second occlusive device is distal to said occlusion; activating said second occlusive device to form a chamber within said blood vessel; delivering an intermediate catheter through said blood vessel into said chamber to treat said occlusion, wherein said intermediate catheter creates a pressure change within said chamber which does not exceed 50 psi.
Claim 40
Dependent Claim
24 words
The method of claim 34, further comprising delivering a third occlusive device through said blood vessel to occlude a branch off said blood vessel.
Claim 41
Dependent Claim
12 words
The method of claim 34, wherein said inner catheter is a guidewire.
Claim 42
Dependent Claim
23 words
The method of claim 34, wherein at least a portion of said main catheter rides over said inner catheter during said delivery step.
Claim 43
Dependent Claim
23 words
The method of claim 34, wherein at least a portion of said intermediate catheter rides over said inner catheter during said delivery step.
Claim 44
Dependent Claim
23 words
The method of claim 34, wherein said first and second occlusive devices are inflatable balloons, and the activating steps comprise inflating said balloons.
Claim 45
Dependent Claim
13 words
The method of claim 34, wherein said intermediate catheter is a rheolitic device.
Claim 46
Dependent Claim
23 words
The method of claim 34, wherein said intermediate catheter comprises an angioplasty balloon attached to a catheter capable of providing irrigation or aspiration.
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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) | 2001-11-09 | 2002-05-11 | 2002-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-09 | 2006-05-11 | 2006-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-09 | 2010-05-11 | 2010-11-10 | $7700.00 | Window Closed / Lapsed |