US6800085B2
Expired / Lapsed
US
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Methods and apparatus for treating vascular occlusions
Assignee: Cordis US Corp
•
Filing: 2001-04-13
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Granted: 2004-10-05
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Expires: 2021-04-13
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
- 👤 Gerald Hansen
- 👤 E. Richard Hill, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:41
CPC Classifications
A; A61; A61M; A61M29/00; A61M29/02; A61B; A61B17/00; A61B17/22; A61B17/22031; A61B2017/00831; A61B2017/0084; A61B2017/00845; A61B2017/22051; A61B2017/22052; A61B2017/22065; A61B2017/22069; A61B2017/22094; 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: 19
Claim 1
Independent Claim
152 words
A catheter for treating a vascular occlusion, comprising: an elongated shaft including a proximal section and a distal section, and at least one lumen extending from the proximal section to the distal section; two spreading members at the distal section of the elongated shaft, wherein each of the spreading members comprises a free distal end that moves laterally away from a longitudinal axis of the elongated shaft to disrupt the vascular occlusion; and an actuating assembly positioned along the elongated shaft to move the free distal ends of the two spreading members laterally in response to an actuation force, wherein the free distal ends of the spreading members are configured to apply a fracturing force to tissue including at least one of tissue of a blood vessel and tissue of the vascular occlusion and configured to support advancing the catheter through the tissue so that the tissue remains external to the catheter.
Claim 2
Dependent Claim
152 words
A catheter for treating a vascular occlusion, comprising: an elongated shaft including a proximal section and a distal section, and at least one lumen extending from the proximal section to the distal section; two spreading members at the distal section of the elongated shaft, wherein each of the spreading members comprises a free distal end that moves laterally away from a longitudinal axis of the elongated shaft to disrupt the vascular occlusion; and an actuating assembly positioned along the elongated shaft to move the free distal ends of the two spreading members laterally in response to an actuation force, wherein the free distal ends of the spreading members are configured to apply a fracturing force to tissue including at least one of tissue of a blood vessel and tissue of the vascular occlusion and configured to support advancing the catheter through the tissue so that the tissue remains external to the catheter.
Claim 3
Dependent Claim
26 words
The catheter as recited in claim 1 , wherein each of the two spreading members includes a cam follower on an interior of the spreading member.
Claim 4
Dependent Claim
43 words
The catheter as recited in claim 2 , wherein the actuating assembly includes an actuation element including a distal end with a cam, wherein the cam is in contact with the cam follower to urge the spreading member in a substantially lateral direction.
Claim 5
Dependent Claim
39 words
The catheter as recited in claim 3 , wherein the cam is configured as a central hub, and wherein the spreading member is urged in a substantially lateral direction when the cam is moved in a relatively proximal direction.
Claim 6
Dependent Claim
44 words
The catheter as recited in claim 3 , wherein the cam is formed with an edge that slidably contacts the cam follower, and wherein the spreading member is urged in a substantially lateral direction when the cam is moved in a relatively distal direction.
Claim 7
Dependent Claim
17 words
The catheter as recited in claim 1 , wherein the spreading member includes a substantially curved end.
Claim 8
Dependent Claim
17 words
The catheter as recited in claim 1 , wherein the spreading member includes a substantially tapered end.
Claim 9
Dependent Claim
154 words
An intravascular tissue expanding catheter, comprising: a catheter shaft formed of braided material, wherein the catheter shaft comprises at least one conduit extending along a longitudinal axis of the catheter shalt; a housing formed at a distal end of the catheter shaft, wherein the housing includes two deflecting members that each comprise a free distal tip that moves in a lateral direction away from the longitudinal axis of the catheter shaft to expand intravascular tissue; and an actuation assembly that moves the distal tips of the two deflecting members away from the longitudinal axis of the catheter shaft, wherein the distal tips of the deflecting members are configured to apply a fracturing force to the intravascular tissue including at least one of tissue of a blood vessel and tissue of the vascular occlusion and configured to support advancing the catheter through the intravascular tissue so that the intravascular tissue remains external to the catheter.
Claim 10
Dependent Claim
154 words
An intravascular tissue expanding catheter, comprising: a catheter shaft formed of braided material, wherein the catheter shaft comprises at least one conduit extending along a longitudinal axis of the catheter shalt; a housing formed at a distal end of the catheter shaft, wherein the housing includes two deflecting members that each comprise a free distal tip that moves in a lateral direction away from the longitudinal axis of the catheter shaft to expand intravascular tissue; and an actuation assembly that moves the distal tips of the two deflecting members away from the longitudinal axis of the catheter shaft, wherein the distal tips of the deflecting members are configured to apply a fracturing force to the intravascular tissue including at least one of tissue of a blood vessel and tissue of the vascular occlusion and configured to support advancing the catheter through the intravascular tissue so that the intravascular tissue remains external to the catheter.
Claim 11
Dependent Claim
28 words
A catheter as in claim 8 , wherein the two deflecting members each include an integrally formed hinge about which the distal tip of the deflecting member rotates.
Claim 12
Dependent Claim
29 words
A catheter as in claim 8 , wherein the two deflecting members are each coupled to a discrete hinge about which the distal tip of the deflecting member rotates.
Claim 13
Dependent Claim
19 words
A catheter as in claim 8 , wherein each of the two deflecting members includes an internal cam follower.
Claim 14
Dependent Claim
44 words
A catheter as in claim 11 , wherein the actuation assembly includes a cam positioned within the housing for slidable movement along the cam followers of the two deflecting members to move the distal tips of the two deflecting members in a lateral direction.
Claim 15
Dependent Claim
23 words
A catheter as in claim 8 , wherein the actuation assembly includes at least one pulling element coupled to the two deflecting members.
Claim 16
Dependent Claim
153 words
A catheter for use in vasculature, comprising: a catheter body comprising at least one conduit extending through the catheter body; two tissue expanding members coupled to a distal section of the catheter body, wherein each of the two tissue expanding members includes a proximal portion and a distal portion, and wherein the distal portion is free to move away from a longitudinal axis of the catheter body relative to the proximal portion; and an actuation assembly within the catheter body such that when the actuation assembly contacts the two tissue expanding members, the distal portions of the expanding members move away from the longitudinal axis, wherein the expanding members are configured to apply a fracturing force to tissue including at least one of tissue of a blood vessel and tissue of a vascular occlusion and configured to support advancing the catheter through the tissue so that the tissue remain external to the catheter.
Claim 17
Dependent Claim
153 words
A catheter for use in vasculature, comprising: a catheter body comprising at least one conduit extending through the catheter body; two tissue expanding members coupled to a distal section of the catheter body, wherein each of the two tissue expanding members includes a proximal portion and a distal portion, and wherein the distal portion is free to move away from a longitudinal axis of the catheter body relative to the proximal portion; and an actuation assembly within the catheter body such that when the actuation assembly contacts the two tissue expanding members, the distal portions of the expanding members move away from the longitudinal axis, wherein the expanding members are configured to apply a fracturing force to tissue including at least one of tissue of a blood vessel and tissue of a vascular occlusion and configured to support advancing the catheter through the tissue so that the tissue remain external to the catheter.
Claim 18
Dependent Claim
164 words
An intravascular catheter, comprising: a catheter shaft including a distal end and a longitudinal axis having at least one lumen extending along the longitudinal axis of the catheter shaft; an assembly at the distal end of the catheter shaft including two deflecting members each defined by a free distal tip that moves in a lateral direction away from the longitudinal axis of the catheter shaft to expand vascular tissue, wherein the two deflecting members are hinged to the catheter shaft; and an actuating assembly positioned along the catheter shaft, the proximal movement of which moves the distal tip of the two deflecting members away from the longitudinal axis of the catheter shaft, wherein the deflecting members are configured to apply a fracturing force to tissue including at least one of tissue of a blood vessel and tissue of a vascular occlusion in the blood vessel and configured to support advancing the catheter through the tissue so that the tissue remains external to the catheter.
Claim 19
Dependent Claim
164 words
An intravascular catheter, comprising: a catheter shaft including a distal end and a longitudinal axis having at least one lumen extending along the longitudinal axis of the catheter shaft; an assembly at the distal end of the catheter shaft including two deflecting members each defined by a free distal tip that moves in a lateral direction away from the longitudinal axis of the catheter shaft to expand vascular tissue, wherein the two deflecting members are hinged to the catheter shaft; and an actuating assembly positioned along the catheter shaft, the proximal movement of which moves the distal tip of the two deflecting members away from the longitudinal axis of the catheter shaft, wherein the deflecting members are configured to apply a fracturing force to tissue including at least one of tissue of a blood vessel and tissue of a vascular occlusion in the blood vessel and configured to support advancing the catheter through the tissue so that the tissue remains external to the catheter.
References Cited (Backward Citations)
US728175A
Cited
US765879A
Cited
US832201A
Cited
US1127948A
Cited
US1267066A
Cited
US2621651A
Cited
US2854983A
Cited
FR1585065A
Cited
US3640270A
Cited
US3667474A
Cited
US4043323A
Cited
DE2945237A1
Cited
US4355643A
Cited
USRE32158E
Cited
US4630609A
Cited
US4848336A
Cited
US4585000A
Cited
US4572186A
Cited
US4541433A
Cited
US5114414A
Cited
US4737142A
Cited
US4669467A
Cited
US5102390A
Cited
US4648402A
Cited
US4787388A
Cited
US4681110A
Cited
US4698057A
Cited
US4723549A
Cited
US4794928A
Cited
US4862874A
Cited
US5001556A
Cited
US5098381A
Cited
US5011488A
Cited
EP0377269A1
Cited
US5099850A
Cited
US4919112A
Cited
US4919112B1
Cited
US5179961A
Cited
US5002041A
Cited
US5632746A
Cited
US5019040A
Cited
US5180368A
Cited
US5034001A
Cited
US5263963A
Cited
US5100425A
Cited
US5092839A
Cited
US5030201A
Cited
US5089006A
Cited
US5707390A
Cited
US5197971A
Cited
US5507296A
Cited
US5211654A
Cited
US5209729A
Cited
US5156594A
Cited
US5192290A
Cited
EP0521595A2
Cited
US5459570A
Cited
US5321501A
Cited
US5193546A
Cited
US5217484A
Cited
US5766151A
Cited
US5423846A
Cited
US5263959A
Cited
US5626599A
Cited
US5486193A
Cited
US5493000A
Cited
US5263967A
Cited
US5263967B1
Cited
US5336252A
Cited
US5653684A
Cited
US5507295A
Cited
US5409453A
Cited
US5351678A
Cited
US5282817A
Cited
US5486170A
Cited
US5350377A
Cited
US5490859A
Cited
US5540707A
Cited
US5501694A
Cited
US5439000A
Cited
US5383467A
Cited
US5304199A
Cited
US5279565A
Cited
US5334210A
Cited
US5511559A
Cited
US5456667A
Cited
US5816923A
Cited
US5618300A
Cited
US5599306A
Cited
US5415636A
Cited
US5484412A
Cited
US5569298A
Cited
US5522819A
Cited
US5499995C1
Cited
US5499995A
Cited
US5683451A
Cited
US5573531A
Cited
DE4429117A1
Cited
US5893875A
Cited
US5752973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-10-05 | 2008-04-05 | 2008-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-10-05 | 2012-04-05 | 2012-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-10-05 | 2016-04-05 | 2016-10-05 | $7700.00 | Window Closed / Lapsed |