US6986778B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exchange method for emboli containment
Assignee: Kardiametrix LLC
•
Filing: 2001-01-22
•
Granted: 2006-01-17
•
Expires: 2021-01-22
Abstract
Abstract The present invention provides a method for exchanging catheters while containing emboli within a blood vessel such as a saphenous vein graft, coronary artery, carotid artery, or other similar vessels. A guidewire is inserted through the vasculature of a patient until it reaches a desired treatment site. A therapy catheter is then inserted over the guidewire until the distal end of the therapy catheter reaches the treatment site. The guidewire has a distally mounted balloon which is inflated to occlude the blood vessel. Then, the therapy catheter provides means for treating the vessel at the treatment site. After treatment, the therapy catheter is removed from the guidewire and exchanged with an aspiration catheter which rides over the guidewire until the distal end of the aspiration catheter reaches the treatment site. The aspiration catheter applies negative pressure to remove any emboli formed by the treatment procedure.
Inventors
- 👤 Gholam-Reza Zadno-Azizi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:16
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1018; A61M25/10184; A61F; A61F2/00; A61F2/01; A61F2/0108; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12027; A61B17/12036; A61B17/12099; A61B17/12109; A61B17/12113; A61B17/12131; A61B17/12136; A61B17/12168; A61B17/12172; A61B17/12181; A61B17/12186; A61B17/22; A61F2/013; A61M25/0009; A61M25/0043; A61M25/0054; A61M25/0067; A61M25/0074; A61M25/0075; A61M25/01; A61M25/09; A61M25/09016; A61M25/09033; A61M25/1011; A61M25/1027; A61M25/104; A61B2017/22051; A61B2017/22065; A61B2017/22067; A61B17/32; A61B17/3205; A61B17/3207; A61B2017/320716; A61F2/011; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61M2025/0018; A61M2025/09008; A61M2025/09116; A61M2025/09125; A61M2025/09175; A61M2025/1015; A61M2025/1043; A61M2025/1052; A61M2025/1079; A61M2025/1081; A61M2025/1093; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/005; A61M25/10185
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
190 words
A catheter system for emboli containment, comprising: a guidewire having a proximal end and a distal end; an occlusive device connected to the distal end of the guidewire, the occlusive device being actuatable between an expanded state in which the occlusive device engages at least a portion of the walls of a blood vessel, and a nonexpanded state in which the occlusive device does not engage the walls of the blood vessel; a first treatment catheter having a proximal end and a distal end and a lumen extending therethrough; and a second treatment catheter having a proximal end and a distal end and a lumen extending therethrough; wherein the first treatment catheter is adapted to be delivered over and then removed from the guidewire, and the second treatment catheter is adapted to be delivered over and then removed from the guidewire following removal of the first treatment catheter, and wherein the occlusive device is capable of maintaining its expanded state while the first treatment catheter is removed from the guidewire and while the second treatment catheter is delivered over the guidewire; wherein the occlusive device is a self-expanding sealing member.
Claim 2
Dependent Claim
190 words
A catheter system for emboli containment, comprising: a guidewire having a proximal end and a distal end; an occlusive device connected to the distal end of the guidewire, the occlusive device being actuatable between an expanded state in which the occlusive device engages at least a portion of the walls of a blood vessel, and a nonexpanded state in which the occlusive device does not engage the walls of the blood vessel; a first treatment catheter having a proximal end and a distal end and a lumen extending therethrough; and a second treatment catheter having a proximal end and a distal end and a lumen extending therethrough; wherein the first treatment catheter is adapted to be delivered over and then removed from the guidewire, and the second treatment catheter is adapted to be delivered over and then removed from the guidewire following removal of the first treatment catheter, and wherein the occlusive device is capable of maintaining its expanded state while the first treatment catheter is removed from the guidewire and while the second treatment catheter is delivered over the guidewire; wherein the occlusive device is a self-expanding sealing member.
Claim 3
Dependent Claim
27 words
The catheter system of claim 1 , further comprising a sleeve provided over the self-expanding sealing member, wherein removal of the sleeve actuates the self-expanding sealing member.
Claim 4
Dependent Claim
202 words
A catheter system for emboli containment, comprising: a guidewire having a proximal end, a distal end, and a lumen extending therethrough; an occlusive device connected to the distal end of the guidewire, the occlusive device being actuatable between an expanded state in which the occlusive device engages at least a portion of the walls of a blood vessel, and a nonexpanded state in which the occlusive device does not engage the walls of the blood vessel; a first treatment catheter having a proximal end and a distal end and a lumen extending therethrough; and a second treatment catheter having a proximal end and a distal end and a lumen extending therethrough; wherein the first treatment catheter is adapted to be delivered over and then removed from the guidewire, and the second treatment catheter is adapted to be delivered over and then removed from the guidewire following removal of the first treatment catheter, and wherein the occlusive device is capable of maintaining its expanded state while the first treatment catheter is removed from the guidewire and while the second treatment catheter is delivered over the guidewire; wherein the occlusive device is actuated by a pull wire extending through the lumen of the guidewire.
Claim 5
Dependent Claim
202 words
A catheter system for emboli containment, comprising: a guidewire having a proximal end, a distal end, and a lumen extending therethrough; an occlusive device connected to the distal end of the guidewire, the occlusive device being actuatable between an expanded state in which the occlusive device engages at least a portion of the walls of a blood vessel, and a nonexpanded state in which the occlusive device does not engage the walls of the blood vessel; a first treatment catheter having a proximal end and a distal end and a lumen extending therethrough; and a second treatment catheter having a proximal end and a distal end and a lumen extending therethrough; wherein the first treatment catheter is adapted to be delivered over and then removed from the guidewire, and the second treatment catheter is adapted to be delivered over and then removed from the guidewire following removal of the first treatment catheter, and wherein the occlusive device is capable of maintaining its expanded state while the first treatment catheter is removed from the guidewire and while the second treatment catheter is delivered over the guidewire; wherein the occlusive device is actuated by a pull wire extending through the lumen of the guidewire.
Claim 6
Dependent Claim
14 words
The catheter system of claim 3 , wherein the occlusive device is a filter.
Claim 7
Dependent Claim
16 words
The catheter system of claim 4 , wherein the first treatment catheter is a therapy catheter.
Claim 8
Dependent Claim
16 words
The catheter system of claim 5 , wherein the second treatment catheter is an aspiration catheter.
Claim 9
Dependent Claim
16 words
The catheter system of claim 4 , wherein the second treatment catheter is a therapy catheter.
Claim 10
Dependent Claim
16 words
The catheter system of claim 4 , wherein the second treatment catheter is an aspiration catheter.
Claim 11
Dependent Claim
59 words
The catheter system of claim 4 , further comprising a third treatment catheter having a proximal end and a distal end and a lumen extending therethrough, wherein the third treatment catheter is adapted to be delivered over and then removed from the guidewire following removal of the first treatment catheter and prior to delivery of the second treatment catheter.
Claim 12
Dependent Claim
58 words
The catheter system of claim 9 , wherein the first treatment catheter has a dilatation balloon of a first diameter on its distal end, the third treatment catheter has a dilatation balloon of a second diameter on its distal end, the second diameter being larger than the first diameter, and the second treatment catheter is an aspiration catheter.
Claim 13
Dependent Claim
15 words
The catheter system of claim 4 , wherein the guidewire includes a lumen extending therethrough.
Claim 14
Dependent Claim
133 words
A catheter system for emboli containment, comprising: a guidewire having a proximal end and a distal end; an occlusive device connected to the distal end of the guidewire, the occlusive device being actuatable between an expanded state in which the occlusive device engages at least a portion of the walls of a blood vessel, and a nonexpanded state in which the occlusive device does not engage the walls of the blood vessel; and a catheter having a proximal end and a distal end and a lumen extending therethrough, the catheter being adapted to be delivered over and removed from the guidewire; wherein the occlusive device is capable of maintaining its expanded state while the catheter is either advanced over or removed from the guidewire; wherein the occlusive device is a self-expanding sealing member.
Claim 15
Dependent Claim
133 words
A catheter system for emboli containment, comprising: a guidewire having a proximal end and a distal end; an occlusive device connected to the distal end of the guidewire, the occlusive device being actuatable between an expanded state in which the occlusive device engages at least a portion of the walls of a blood vessel, and a nonexpanded state in which the occlusive device does not engage the walls of the blood vessel; and a catheter having a proximal end and a distal end and a lumen extending therethrough, the catheter being adapted to be delivered over and removed from the guidewire; wherein the occlusive device is capable of maintaining its expanded state while the catheter is either advanced over or removed from the guidewire; wherein the occlusive device is a self-expanding sealing member.
Claim 16
Dependent Claim
27 words
The catheter system of claim 12 , further comprising a sleeve provided over the self-expanding sealing member, wherein removal of the sleeve actuates the self-expanding sealing member.
Claim 17
Dependent Claim
145 words
A catheter system for emboli containment, comprising: a guidewire having a proximal end, a distal end, and a lumen extending therethrough; an occlusive device connected to the distal end of the guidewire, the occlusive device being actuatable between an expanded state in which the occlusive device engages at least a portion of the walls of a blood vessel, and a nonexpanded state in which the occlusive device does not engage the walls of the blood vessel; and a catheter having a proximal end and a distal end and a lumen extending therethrough, the catheter being adapted to be delivered over and removed from the guidewire; wherein the occlusive device is capable of maintaining its expanded state while the catheter is either advanced over or removed from the guidewire; wherein the occlusive device is actuated by a pull wire extending through the lumen of the guidewire.
Claim 18
Dependent Claim
145 words
A catheter system for emboli containment, comprising: a guidewire having a proximal end, a distal end, and a lumen extending therethrough; an occlusive device connected to the distal end of the guidewire, the occlusive device being actuatable between an expanded state in which the occlusive device engages at least a portion of the walls of a blood vessel, and a nonexpanded state in which the occlusive device does not engage the walls of the blood vessel; and a catheter having a proximal end and a distal end and a lumen extending therethrough, the catheter being adapted to be delivered over and removed from the guidewire; wherein the occlusive device is capable of maintaining its expanded state while the catheter is either advanced over or removed from the guidewire; wherein the occlusive device is actuated by a pull wire extending through the lumen of the guidewire.
Claim 19
Dependent Claim
14 words
The catheter system of claim 14 , wherein the occlusive device is a filter.
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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) | 2009-01-16 | 2009-07-18 | 2010-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-01-16 | 2013-07-18 | 2014-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-01-16 | 2017-07-18 | 2018-01-17 | $7700.00 | Window Closed / Lapsed |