TOTAL VASCULAR OCCLUSION TREATMENT SYSTEM AND METHOD
1 Assignment
0 Petitions
Accused Products
Abstract
A system is provided for providing vascular access across chronic total occlusions, in particular those that are particularly long such as in the lower periphery. A guide wire has an off-set, tilted tip section that provides rotational micro-dissection through tight CTO lesions. An outer catheter sheath prevents binding of the wire via wire reinforced composite polymeric construction. The outer sheath catheter includes an ablative outer surface for ablating tissue in contact therewith. The guide wire and outer sheath catheter are each driven by an actuator for cooperative advancement through the CTO. Rotational couplers rotate them, which may be at different speeds and via different couplers. The engagement of the wire within the sheath may allow for at least limited longitudinal movement between them during CTO advancement. Aspiration of ablated debris around the outer rotational ablation catheter is accomplished through suction ports through the composite wall and between adjacent windings of the reinforcement. Long CTOs of the peripheral vasculature are in particular benefited by the assembly, which allows on-going force transmission to the distal components through long portions of blockage, and allows for pilot lumen formation for advancing other interventional tools.
76 Citations
46 Claims
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1-2. -2. (canceled)
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3. A medical device system for conducting a medical procedure related to a medical condition within a body of a patient, comprising:
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a first mechanically actuated device comprising a catheter with a first elongate body having a first proximal end portion and a first distal end portion; and
a second mechanically actuated device comprising a second elongate body with a second proximal end portion and a second distal end portion;
wherein a lumen extends within the first actuated device between a proximal port and a distal port that is located at the first distal end portion;
wherein the second actuated device is located at least in part within the lumen with the second distal end portion extending from the lumen through the distal port in a delivery configuration; and
wherein in the delivery configuration the first and second distal end portions are adapted to be delivered across a resistance to a location within the patient'"'"'s body with the first and second proximal end portions, respectively, extending externally from the patient. - View Dependent Claims (9, 15, 16, 19, 20, 22, 23, 26, 27, 32, 33, 34, 36, 38, 40, 41, 42, 45)
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4-8. -8. (canceled)
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10-14. -14. (canceled)
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17-18. -18. (canceled)
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21. (canceled)
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24-25. -25. (canceled)
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28-31. -31. (canceled)
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35. (canceled)
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37. (canceled)
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39. (canceled)
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43-44. -44. (canceled)
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46. A method for conducting a medical procedure related to a medical condition within a body of a patient, comprising:
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mechanically actuating a first device comprising a catheter with a first elongate body having a first proximal end portion and a first distal end portion;
mechanically actuating a second device comprising a second elongate body with a second proximal end portion and a second distal end portion;
positioning the second mechanically actuated device at least in part within a lumen of the first mechanically actuated device that extends within the first mechanically actuated device between a proximal port and a distal port at the first distal end portion;
extending the second distal end portion of the second mechanically actuated device from the lumen through the distal port in a delivery configuration; and
delivering the first and second distal end portions in the delivery configuration across a resistance to a location within the patient'"'"'s body with the first and second proximal end portions, respectively, extending externally from the patient.
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Specification