Catheter apparatus and method for treating occluded vessels
DCFirst Claim
1. A method for treating occluded vessels comprising:
- first advancing a first catheter having a first inflatable balloon mounted thereon into a blood vessel until the first balloon is positioned proximal to a stenosis in the blood vessel;
inflating the first balloon to occlude the blood vessel; and
thenadvancing a second catheter across said stenosis until the second catheter is positioned distal to said stenosis.
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Abstract
A catheter assembly for treatment of a stenosis in a lumen in a blood-carrying vessel comprising a first flexible elongate tubular member having proximal and distal extremities. A first inflatable balloon is coaxially mounted on the distal extremity of the first flexible elongate tubular member and has a main lumen and an aspiration lumen exiting through the distal extremity. A second flexible elongate tubular member has proximal and distal extremities and has a second inflatable balloon coaxially mounted on the distal extremity and has a blood perfusion lumen extending therethrough. The second flexible elongate tubular member is slidably mounted in the main lumen of the first flexible elongate tubular member. The first balloon is positioned so that it is adjacent to but proximal of the stenosis and is thereafter inflated to create a first occlusion in the lumen in the vessel. A negative pressure is created in the lumen in the vessel distal of the first balloon through the aspiration lumen. The second balloon is positioned distal of the stenosis and is inflated to create a second occlusion in the lumen of the vessel to form a working space between the first and second balloons which brackets the stenosis. Blood is perfused through the blood perfusion lumen distal of the second occlusion. A therapeutic procedure is performed in the working space.
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Citations
20 Claims
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1. A method for treating occluded vessels comprising:
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first advancing a first catheter having a first inflatable balloon mounted thereon into a blood vessel until the first balloon is positioned proximal to a stenosis in the blood vessel; inflating the first balloon to occlude the blood vessel; and
thenadvancing a second catheter across said stenosis until the second catheter is positioned distal to said stenosis. - View Dependent Claims (2, 3, 4)
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5. A method for treating occluded vessel comprising:
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first inhibiting a flow of blood across a stenosis in a blood vessel in a proximal to distal direction; and
thenadvancing a catheter across said stenosis in a proximal to distal direction. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 16, 17, 18, 19, 20)
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13. A method for treating a stenosis in a bifurcated blood vessel comprising:
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first advancing a first catheter having a first occlusive device mounted thereon into said blood vessel until the first occlusive device is positioned proximal to the stenosis; activating the first occlusive device to occlude the blood vessel; advancing a second catheter having a second occlusive device mounted thereon across said stenosis until the second occlusive device is positioned distal to said stenosis and in a first branch of the vessel; activating the second occlusive device on the second catheter; advancing a third catheter having a third occlusive device mounted thereon until the third occlusive device is positioned in a second branch of the vessel; and activating the third occlusive device on the third catheter. - View Dependent Claims (14, 15)
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Specification