Patent US6217549B1 successfully refreshed from Google Patents.
US6217549B1
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US
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Methods and apparatus for treating vascular occlusions
Assignee: Cordis US Corp
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Filing: 1998-09-08
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Granted: 2001-04-17
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Expires: 2018-09-08
Abstract
Abstract An intravascular catheter system for the treatment of occluded blood vessels that includes tissue displacement or hinged expansion members that are movable from a closed to an open position. An actuating assembly may be provided for moving the tissue expansion members between an open and closed position to exert a substantially lateral distal end force upon the region surrounding an occluded blood vessel. The tissue expansion members may stretch apart, tear or otherwise disrupt a vascular occlusion sufficiently to create a pathway that may support the passage or placement of a guidewire or an interventional vascular device across the occlusion or obstruction. Methods of crossing or displacing a vascular occlusion are further provided that include the positioning of a vascular catheter having at least one hinged spreading member positioned at the distal region of the catheter that is responsive to directed force along the longitudinal axis of the catheter. A directed force is applied to the actuator in order to deploy the spreading member and displace a vascular occlusion creating a path to permit the passage of a guidewire or device therethrough.
Inventors
- 👤 Matthew R. Selmon
- 👤 Charles F. Milo
- 👤 Robert L. Wynne
- 👤 Suresh S. Pai
- 👤 Kent D. Dell
- 👤 Charles Gresl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:21
CPC Classifications
A; A61; A61M; A61M29/00; A61M29/02; A61B; A61B17/00; A61B17/22; A61B17/22031; A61B2017/00831; A61B2017/0084; A61B2017/00845; A61B2017/22051; A61B2017/22065; A61B2017/22069; A61B17/28; A61B17/29; A61B2017/2926; A61B2017/2932; A61B2017/2933; A61B2017/2937; A61B17/32; A61B2017/320044; A61B17/3205; A61B17/3207; A61B2017/320741
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
120 words
A method for transcending a vascular occlusion, comprising: positioning a vascular catheter adjacent to a vascular occlusion within a peripheral vasculature; transmitting a spreading force using at least one pulling member connected to a proximal region of at least one spreading member located at a distal end of the vascular catheter; rotating a distal end of the at least one spreading member around a proximal end of the at least one spreading member in response to the spreading force; forming at least one path that transcends the vascular occlusion; advancing the vascular catheter along the at least one path; and advancing a guide wire through at least one conduit of the vascular catheter and along the at least one path.
Claim 2
Independent Claim
120 words
A method for transcending a vascular occlusion, comprising: positioning a vascular catheter adjacent to a vascular occlusion within a peripheral vasculature; transmitting a spreading force using at least one pulling member connected to a proximal region of at least one spreading member located at a distal end of the vascular catheter; rotating a distal end of the at least one spreading member around a proximal end of the at least one spreading member in response to the spreading force; forming at least one path that transcends the vascular occlusion; advancing the vascular catheter along the at least one path; and advancing a guide wire through at least one conduit of the vascular catheter and along the at least one path.
Claim 3
Dependent Claim
32 words
The method as recited in claim 1 , further comprising: maintaining the vascular catheter in at least one position along the at least one path; placing the guide wire across the occlusion.
Claim 4
Dependent Claim
21 words
The method as recited in claim 1 , wherein the guidewire is advanced through at least a portion of the occlusion.
Claim 5
Dependent Claim
21 words
The method as recited in claim 1 , wherein the guidewire is advanced around at least a portion of the occlusion.
Claim 6
Dependent Claim
20 words
The method as recited in claim 1 , wherein the guidewire is advanced between layers of a blood vessel wall.
Claim 7
Dependent Claim
37 words
The method as recited in claim 1 , wherein forming at least one path comprises stretching out a blood vessel wall of the peripheral vasculature creating a path substantially between the occlusion and the blood vessel wall.
Claim 8
Dependent Claim
34 words
The method as recited in claim 3 , wherein forming at least one path comprises separating layers of the blood vessel wall creating a path substantially between the layers of the blood vessel wall.
Claim 9
Dependent Claim
26 words
The method as recited in claim 1 , wherein forming at least one path comprises disrupting the vascular occlusion creating a path substantially through the occlusion.
Claim 10
Dependent Claim
64 words
The method as recited in claim 1 , further comprising: removing the vascular catheter; positioning at least one interventional device substantially adjacent the vascular occlusion, wherein the at least one interventional device comprises at least one device selected from a group consisting of an angioplasty device, an atherectomy device, a stent, a guidewire, an imaging catheter, a drug delivery device, and a radiation catheter.
Claim 11
Dependent Claim
50 words
The method as recited in claim 1 , wherein a distal portion of the at least one spreading member is defined by an original diameter and wherein the distal portion expands to an enlarged diameter that is equal to at least approximately one-hundred and ten percent of the original diameter.
Claim 12
Dependent Claim
22 words
The method as recited in claim 1 , wherein the vascular catheter is advanced through at least a portion of the occlusion.
Claim 13
Dependent Claim
20 words
The method as recited in claim 1 , wherein activation of the at least one spreading member provides intermittent expansion.
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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) | 2004-04-16 | 2004-10-16 | 2005-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-04-16 | 2008-10-16 | 2009-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-04-16 | 2012-10-16 | 2013-04-17 | $7700.00 | Window Closed / Lapsed |