Device for percutaneous cutting and dilating a stenosis of the aortic valve
First Claim
1. A system for incising tissue of a patient which comprises:
- a catheter defining a longitudinal axis;
an inflatable balloon mounted on said catheter; and
an elongated incising element having a first end and a second end with the first end thereof pivotally attached to a point on said catheter and with said incising element mounted on said inflatable balloon for rotation of said incising element about the point on said catheter to incline said incising element relative to said axis with the second incising element end radially distanced from the balloon for incising the tissue when said balloon is inflated.
1 Assignment
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Accused Products
Abstract
A device for incising a stenosis in the aortic valve of a patient includes an elongated balloon catheter, with at least one straight blade mounted on the balloon. Specifically, the blade is coplanar with the axis of the catheter, and the proximal end of the blade is located adjacent the proximal end of the balloon. In operation, the balloon/blade combination is advanced into the vasculature and positioned distal to the stenosis to be incised. The balloon is then inflated. With this inflation, the blade is inclined relative to the axis of the catheter with an increasing distance between the blade and the axis in a distal direction. The device is then retracted, proximally, to incise the stenosis.
74 Citations
16 Claims
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1. A system for incising tissue of a patient which comprises:
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a catheter defining a longitudinal axis; an inflatable balloon mounted on said catheter; and an elongated incising element having a first end and a second end with the first end thereof pivotally attached to a point on said catheter and with said incising element mounted on said inflatable balloon for rotation of said incising element about the point on said catheter to incline said incising element relative to said axis with the second incising element end radially distanced from the balloon for incising the tissue when said balloon is inflated. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for incising tissue of a patient which comprises:
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an incising element having a first end and a second end; a catheter for positioning said incising element, wherein a vessel has a wall surrounding a lumen and the wall substantially defines a centerline for the lumen; and an inflatable balloon mounted on said catheter, with said incising element mounted on said inflatable balloon, for holding said incising device in a first configuration wherein said incising element is substantially parallel to the centerline of the lumen when said balloon is deflated, and for rotating said incising element into a second configuration wherein the incising element is inclined relative to the centerline of the lumen with the second end of the incising element radially distanced from the balloon to incise the tissue when said balloon is inflated. - View Dependent Claims (8, 9, 10)
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11. A method for incising tissue of a patient which comprises the steps of:
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positioning a catheter, said catheter defining a longitudinal axis and having an elongated incising element having a first end and a second end, with the second end pivotally mounted thereon; inflating a balloon, wherein the incising element is mounted on the balloon, to incline the incising element relative to the axis with the second end of the incising element radially distanced from the balloon when the balloon is inflated; and drawing the catheter to incise tissue with the inclined incising element. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification