DEVICES AND METHODS FOR TREATING CHRONIC TOTAL OCCLUSION
First Claim
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1. A method of treating an occlusion within a blood vessel, the method comprising:
- inserting a catheter defining proximal and distal ends and a central lumen terminating at an aperture at the distal end into the blood vessel;
inflating an elastomeric membrane mounted on the catheter so that the elastomeric membrane substantially closes off the blood vessel and stabilizes the position of the catheter within the blood vessel, the elastomeric membrane including a proximal end and an opposite distal end;
operating an occlusion-penetrating device to expand an existing microchannel in the occlusion to form a channel at least partially through the occlusion.
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Abstract
Catheterization systems and methods for treatment of a condition within a blood vessel are provided that include the use of a catheter, a balloon immediately adjacent to the distal end of the catheter, an inflation device for expanding the balloon, and an occlusion-penetrating device for gaining access through an occlusion. The occlusion-penetrating device may include an indeflator configured to injected fluid at a high pressure, an RF wire, a hollow needle wire, a dissection tool, a laser wire, or even a very small balloon to exploit existing microchannels in the occlusion.
164 Citations
20 Claims
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1. A method of treating an occlusion within a blood vessel, the method comprising:
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inserting a catheter defining proximal and distal ends and a central lumen terminating at an aperture at the distal end into the blood vessel; inflating an elastomeric membrane mounted on the catheter so that the elastomeric membrane substantially closes off the blood vessel and stabilizes the position of the catheter within the blood vessel, the elastomeric membrane including a proximal end and an opposite distal end; operating an occlusion-penetrating device to expand an existing microchannel in the occlusion to form a channel at least partially through the occlusion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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11. A method of treating an occlusion within a blood vessel, the method comprising:
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inserting a first catheter with a first lumen terminating at a distal aperture into the blood vessel; inserting a second catheter with a second lumen through the first lumen of the first catheter and out of the distal aperture; and inflating an elastomeric membrane mounted on the second catheter immediately adjacent the distal end so that the elastomeric membrane substantially closes off the blood vessel and maintains a position of the first catheter in the blood vessel; operating an occlusion-penetrating device to penetrate the occlusion. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A catheterization system for treatment of an occlusion within a blood vessel, the system comprising:
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a catheter defining a proximal end, a distal end, a central lumen interconnecting the ends, and an aperture at the distal end, the catheter insertable into the blood vessel to a position proximal to the occlusion; an elastomeric membrane mounted on the catheter and disposed immediately adjacent to the aperture at the distal end of the catheter, the elastomeric membrane including a proximal end and an opposite distal end and being inflatable to substantially close off the blood vessel and to stabilize the catheter in the blood vessel; and an occlusion-penetrating device operable to form a channel through the occlusion. - View Dependent Claims (19, 20)
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Specification