Bifurcated stent delivery system
First Claim
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1. A stent delivery system comprising:
- a catheter body;
a balloon disposed about the catheter body, the balloon being constructed of at least one substantially compliant material, the balloon being expandable from an unexpanded state to an expanded state;
a first sheath portion rotatably mounted about the balloon to rotate with respect to the balloon, the first sheath portion being expandable from an unexpanded condition to an expanded condition when the balloon is expanded from the unexpanded state to the expanded state, the first sheath portion having a first diameter when arranged in the expanded condition;
a first stent portion configured to expand from an unexpanded configuration to an expanded configuration, the first stent portion being disposed about the first sheath portion when the first stent portion is arranged in the unexpanded configuration;
a second sheath portion rotatably mounted about the balloon to rotate with respect to the balloon, the second sheath portion being axially aligned with the first sheath portion, the second sheath portion being expandable from an unexpanded condition to an expanded condition when the balloon is expanded from the unexpanded state to the expanded state, the second sheath portion having a second diameter when arranged in the expanded condition, the second diameter being less than the first diameter; and
a second stent portion configured to expand from an unexpanded configuration to an expanded configuration, the second stent portion being disposed about the second sheath portion when when the second stent portion is arranged in the unexpanded configuration.
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Abstract
A stent delivery system comprises a catheter which includes a catheter shaft and a balloon positioned thereon. A rotatable sheath is rotatably disposed about a portion of the catheter. The rotatable sheath has a distal portion which extends over the balloon and a proximal portion which extends over the catheter shaft proximal to the balloon. A stent prior to delivery is disposed about the distal portion. The rotatable sheath may also and/or alternatively be constructed of a non-compliant material where as the balloon is a compliant material.
104 Citations
19 Claims
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1. A stent delivery system comprising:
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a catheter body;
a balloon disposed about the catheter body, the balloon being constructed of at least one substantially compliant material, the balloon being expandable from an unexpanded state to an expanded state;
a first sheath portion rotatably mounted about the balloon to rotate with respect to the balloon, the first sheath portion being expandable from an unexpanded condition to an expanded condition when the balloon is expanded from the unexpanded state to the expanded state, the first sheath portion having a first diameter when arranged in the expanded condition;
a first stent portion configured to expand from an unexpanded configuration to an expanded configuration, the first stent portion being disposed about the first sheath portion when the first stent portion is arranged in the unexpanded configuration;
a second sheath portion rotatably mounted about the balloon to rotate with respect to the balloon, the second sheath portion being axially aligned with the first sheath portion, the second sheath portion being expandable from an unexpanded condition to an expanded condition when the balloon is expanded from the unexpanded state to the expanded state, the second sheath portion having a second diameter when arranged in the expanded condition, the second diameter being less than the first diameter; and
a second stent portion configured to expand from an unexpanded configuration to an expanded configuration, the second stent portion being disposed about the second sheath portion when when the second stent portion is arranged in the unexpanded configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification