US6908474B2
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US
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Apparatus and methods for reducing embolization during treatment of carotid artery disease
Assignee: W.L. Gore and Associates Inc
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Filing: 2002-03-15
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Granted: 2005-06-21
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Expires: 2022-03-15
Abstract
Abstract Methods and apparatus are provided for removing emboli during an angioplasty, stenting or surgical procedure comprising a catheter having an occlusion element, an aspiration lumen, and a blood outlet port in communication with the lumen, a guide wire having a balloon, a venous return sheath with a blood inlet port, and tubing that couples the blood outlet port to the blood inlet port. Apparatus is also provided for occluding the external carotid artery to prevent reversal of flow into the internal carotid artery. The pressure differential between the artery and the vein provides reverse flow through the artery, thereby flushing emboli. A blood filter may optionally be included in-line with the tubing to filter emboli from blood reperfused into the patient.
Inventors
- 👤 Michael Hogendijk
- 👤 Juan Carlos Parodi
- 👤 Mark C. Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:54
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12027; A61B17/1204; A61B17/12045; A61B17/12099; A61B17/12109; A61B17/12131; A61B17/12136; A61B17/22; A61F; A61F2/00; A61F2/01; A61F2/0105; A61F2/011; A61F2/013; A61B17/221; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/22051; A61B2017/22065; A61B2017/22067; A61B17/32; A61B17/3205; A61B17/3207; A61B2017/320716; A61B2217/00; A61B2217/002; A61B2217/005; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61M25/01; A61M25/06; A61M25/0662; A61M2025/0681; A61M25/09; A61M2025/09008; A61M2025/09175; A61M25/1011; A61M2025/1015; A61M2025/1043; A61M2025/1052; A61M2025/109; A61M2025/1097; A61M2205/00; A61M2205/75; A61M25/0043; A61M25/0045; A61M25/1002; A61M29/00
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
158 words
Apparatus for removing emboli during an angioplasty or stenting procedure from a vessel having a trunk portion coupled to first and second branches via a bifurcation, the apparatus comprising: a catheter having proximal and distal ends, a first lumen extending therethrough, a blood outlet port in communication with the first lumen, and a distal occlusion element disposed on the distal end of the catheter, the catheter adapted to be disposed in a patient's trunk portion proximal to the bifurcation; and an occlusion member having proximal and distal ends, the occlusion member comprising a self-expanding blood impermeable element, a retrieval wire coupled to the proximal end of the occlusion member and an atraumatic tip coupled to the distal end of the occlusion member, wherein the occlusion member further comprises a contracted state and a deployed state in which the self expanding blood impermeable element is configured to substantially prevent flow in one of the first and second branch vessels.
Claim 2
Dependent Claim
158 words
Apparatus for removing emboli during an angioplasty or stenting procedure from a vessel having a trunk portion coupled to first and second branches via a bifurcation, the apparatus comprising: a catheter having proximal and distal ends, a first lumen extending therethrough, a blood outlet port in communication with the first lumen, and a distal occlusion element disposed on the distal end of the catheter, the catheter adapted to be disposed in a patient's trunk portion proximal to the bifurcation; and an occlusion member having proximal and distal ends, the occlusion member comprising a self-expanding blood impermeable element, a retrieval wire coupled to the proximal end of the occlusion member and an atraumatic tip coupled to the distal end of the occlusion member, wherein the occlusion member further comprises a contracted state and a deployed state in which the self expanding blood impermeable element is configured to substantially prevent flow in one of the first and second branch vessels.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1 wherein the occlusion member is configured to occlude flow in an external carotid artery in the deployed state.
Claim 4
Dependent Claim
14 words
The apparatus of claim 1 wherein the distal occlusion element is an inflatable member.
Claim 5
Dependent Claim
51 words
The apparatus of claim 1 further comprising: a venous return sheath having proximal and distal ends, a lumen extending therethrough, and a blood inlet port in communication with the lumen; and tubing that couples the blood outlet port of the catheter to the blood inlet port of the venous return sheath.
Claim 6
Dependent Claim
29 words
The apparatus of claim 4 further comprising a blood filter disposed between the blood outlet port of the catheter and the blood inlet port of the venous return sheath.
Claim 7
Dependent Claim
34 words
The apparatus of claim 1 further comprising a dilator having proximal and distal ends and a lumen extending therethrough, wherein the dilator is configured to be disposed within the first lumen of the catheter.
Claim 8
Dependent Claim
24 words
The apparatus of claim 6 wherein the occlusion member is adapted to be disposed within the lumen of the dilator in the contracted state.
Claim 9
Dependent Claim
28 words
The apparatus of claim 6 wherein the dilator comprises a slot at the distal end that is configured to permit movement of the retrieval wire within the slot.
Claim 10
Dependent Claim
30 words
The apparatus of claim 6 further comprising a push member having proximal and distal ends, wherein the push member is configured for longitudinal movement within the lumen of the dilator.
Claim 11
Dependent Claim
29 words
The apparatus of claim 9 wherein the distal end of the push member configured to abut the proximal end of the occlusion member within the lumen of the dilator.
Claim 12
Dependent Claim
16 words
The apparatus of claim 1 wherein the proximal end of the occlusion member comprises a taper.
Claim 13
Dependent Claim
23 words
The apparatus of claim 1 further comprising a second lumen, wherein the retrieval wire is configured for longitudinal movement within the second lumen.
Claim 14
Dependent Claim
24 words
The apparatus of claim 12 wherein the second lumen merges with the first lumen along a portion of the distal end of the catheter.
Claim 15
Dependent Claim
151 words
Apparatus for removing emboli from a carotid artery during an angioplasty or stenting procedure, the apparatus comprising: a catheter having proximal and distal ends, a first lumen extending therethrough, a blood outlet port in communication with the first lumen, and a distal occlusion element disposed on the distal end of the catheter, the catheter adapted to be disposed in a patient's common carotid artery; and an occlusion member having proximal and distal ends, the occlusion member comprising a plurality of self-expanding struts carrying a blood impermeable element, a retrieval wire coupled to the proximal end of the occlusion member and an atraumatic tip coupled to the distal end of the occlusion member, wherein the occlusion member further comprises a contracted state and a deployed state in which the self-expanding blood impermeable element is configured to substantially prevent flow in one of either an internal carotid artery or an external carotid artery.
Claim 16
Dependent Claim
151 words
Apparatus for removing emboli from a carotid artery during an angioplasty or stenting procedure, the apparatus comprising: a catheter having proximal and distal ends, a first lumen extending therethrough, a blood outlet port in communication with the first lumen, and a distal occlusion element disposed on the distal end of the catheter, the catheter adapted to be disposed in a patient's common carotid artery; and an occlusion member having proximal and distal ends, the occlusion member comprising a plurality of self-expanding struts carrying a blood impermeable element, a retrieval wire coupled to the proximal end of the occlusion member and an atraumatic tip coupled to the distal end of the occlusion member, wherein the occlusion member further comprises a contracted state and a deployed state in which the self-expanding blood impermeable element is configured to substantially prevent flow in one of either an internal carotid artery or an external carotid artery.
Claim 17
Dependent Claim
23 words
The apparatus of claim 14 wherein the occlusion member is configured to occlude flow in an external carotid artery in the deployed state.
Claim 18
Dependent Claim
14 words
The apparatus of claim 14 wherein the distal occlusion element is an inflatable member.
Claim 19
Dependent Claim
51 words
The apparatus of claim 14 further comprising: a venous return sheath having proximal and distal ends, a lumen extending therethrough, and a blood inlet port in communication with the lumen, and tubing that couples the blood outlet port of the catheter to the blood inlet port of the venous return sheath.
Claim 20
Dependent Claim
29 words
The apparatus of claim 17 further comprising a blood filter disposed between the blood outlet port of the catheter and the blood inlet port of the venous return sheath.
Claim 21
Dependent Claim
34 words
The apparatus of claim 14 further comprising a dilator having proximal and distal ends and a lumen extending therethrough, wherein the dilator is configured to be disposed within the first lumen of the catheter.
Claim 22
Dependent Claim
24 words
The apparatus of claim 19 wherein the occlusion member is adapted to be disposed within the lumen of the dilator in the contracted state.
Claim 23
Dependent Claim
28 words
The apparatus of claim 19 wherein the dilator comprises a slot at the distal end that is configured to permit movement of the retrieval wire within the slot.
Claim 24
Dependent Claim
30 words
The apparatus of claim 19 further comprising a push member having proximal and distal ends, wherein the push member is configured for longitudinal movement within the lumen of the dilator.
Claim 25
Dependent Claim
30 words
The apparatus of claim 22 wherein the distal end of the push member is configured to abut the proximal end of the occlusion member within the lumen of the dilator.
Claim 26
Dependent Claim
15 words
The apparatus claim 14 wherein the proximal end of the occlusion member comprises a taper.
Claim 27
Dependent Claim
23 words
The apparatus of claim 14 further comprising a second lumen, wherein the retrieval wire is configured for longitudinal movement within the second lumen.
Claim 28
Dependent Claim
24 words
The apparatus of claim 25 wherein the second lumen merges with the first lumen along a portion of the distal end of the catheter.
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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) | 2008-06-20 | 2008-12-20 | 2009-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-06-20 | 2012-12-20 | 2013-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-06-20 | 2016-12-20 | 2017-06-21 | $7700.00 | Window Closed / Lapsed |