Deploying a balloon expandable stent to induce spiral flow
First Claim
1. A balloon expanded stent delivery system comprising:
- a catheter with a longitudinal axis;
a balloon mounted about the catheter;
an inflation constraint spirally wound about the longitudinal axis in contact with the balloon and being attached to the catheter;
a balloon expanded stent mounted about the balloon and the inflation constraint;
the delivery system having a predeployment configuration characterized by the balloon being deflated, and the stent is unexpanded and in contact with the balloon;
the delivery system having a deployment configuration characterized by the balloon being inflated, the inflation constraint constrains the inflated balloon to a spiral shape, the stent is expanded and in contact with the balloon, and the stent has a flow directing surface with a spiral contour that matches the spiral shape of the balloon; and
the delivery system having a postdeployment configuration characterized by the balloon being deflated and out of contact with the stent, and the stent retains the flow directing surface with the spiral contour.
1 Assignment
0 Petitions
Accused Products
Abstract
A balloon expanded stent delivery system includes an inflation constraint, such as a wire, spirally wound about the longitudinal axis in contact with a balloon and attached to an underlying catheter. A balloon expanded stent is mounted about the balloon and the inflation constraint. The delivery system has a predeployment configuration with the balloon deflated and the stent unexpanded. The system has a deployment configuration in which the inflation constraint constrains the inflated balloon to a spiral shape, the stent is expanded and in contact with the balloon, and the stent has a flow directing surface with a spiral contour that matches the spiral shape of the balloon. In a postdeployment configuration, the stent retains the flow directing surface with the spiral contour.
8 Citations
14 Claims
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1. A balloon expanded stent delivery system comprising:
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a catheter with a longitudinal axis; a balloon mounted about the catheter; an inflation constraint spirally wound about the longitudinal axis in contact with the balloon and being attached to the catheter; a balloon expanded stent mounted about the balloon and the inflation constraint; the delivery system having a predeployment configuration characterized by the balloon being deflated, and the stent is unexpanded and in contact with the balloon; the delivery system having a deployment configuration characterized by the balloon being inflated, the inflation constraint constrains the inflated balloon to a spiral shape, the stent is expanded and in contact with the balloon, and the stent has a flow directing surface with a spiral contour that matches the spiral shape of the balloon; and the delivery system having a postdeployment configuration characterized by the balloon being deflated and out of contact with the stent, and the stent retains the flow directing surface with the spiral contour. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A balloon expanded stent delivery system comprising:
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a balloon catheter that includes a catheter with a balloon mounted thereon, and including a wire attached to the catheter and spirally wrapped on the balloon; a stent mounted on the balloon; and wherein the balloon is inflated and the stent has a spiral contour that is defined by and responsive to a spiral shape of the inflated balloon as constrained by the wire. - View Dependent Claims (12, 13, 14)
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Specification