Bifurcated stent delivery system
First Claim
Patent Images
1. A stent delivery system comprising:
- a catheter, the catheter comprising a catheter shaft and a balloon positioned thereon, the catheter shaft having a shaft length and the balloon having a balloon length, the balloon having an unexpanded state and an expanded state; and
a sheath, the sheath having a distal region disposed about at least a portion of the balloon and a proximal region disposed about at least a portion of the catheter shaft immediately proximally adjacent to the balloon, at least the distal region being expandable from an unexpanded condition to an expanded condition when the balloon is expanded from the unexpanded state to the expanded state, the sheath having a sheath length, the sheath length being greater than the balloon length and less than the catheter shaft length, in the unexpanded condition the sheath being rotatable about the at least a portion of the balloon; and
a stent, the stent being expandable from an unexpanded configuration to an expanded configuration, in the unexpanded configuration the stent is disposed about the at least a portion of the sheath disposed about at least a portion of the balloon.
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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.
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Citations
51 Claims
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1. A stent delivery system comprising:
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a catheter, the catheter comprising a catheter shaft and a balloon positioned thereon, the catheter shaft having a shaft length and the balloon having a balloon length, the balloon having an unexpanded state and an expanded state; and
a sheath, the sheath having a distal region disposed about at least a portion of the balloon and a proximal region disposed about at least a portion of the catheter shaft immediately proximally adjacent to the balloon, at least the distal region being expandable from an unexpanded condition to an expanded condition when the balloon is expanded from the unexpanded state to the expanded state, the sheath having a sheath length, the sheath length being greater than the balloon length and less than the catheter shaft length, in the unexpanded condition the sheath being rotatable about the at least a portion of the balloon; and
a stent, the stent being expandable from an unexpanded configuration to an expanded configuration, in the unexpanded configuration the stent is disposed about the at least a portion of the sheath disposed about at least a portion of the balloon. - 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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20. A stent delivery system comprising:
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a catheter, the catheter comprising a catheter shaft;
a balloon, the balloon being positioned on the catheter shaft, the balloon having a proximal region and a distal region, the balloon being constructed of at least one substantially compliant material, each region of the balloon having an unexpanded state and an expanded state, the diameter of a respective region of the balloon being greater in the expanded state than in the unexpanded state. a rotatable sheath, the rotatable sheath being rotatably disposed about at least a portion of the balloon, the rotatable sheath being expandable from an unexpanded condition to an expanded condition when the balloon is expanded from the unexpanded state to the expanded state the rotatable sheath being constructed of at least one substantially non-compliant material; and
a stent, the stent being expandable from an unexpanded configuration to an expanded configuration, in the unexpanded configuration the stent is disposed about at least a portion of the rotatable sheath. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A stent delivery system comprising:
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a catheter, the catheter comprising a catheter shaft and a balloon positioned thereon, the catheter shaft having a catheter shaft length, the balloon having an unexpanded state and an expanded state; and
a sheath, the sheath having a distal region disposed about the balloon and a proximal region disposed about at least a portion of the catheter shaft immediately proximally adjacent to the balloon, at least the distal region being expandable from an unexpanded condition to an expanded condition when the balloon is expanded from the unexpanded state to the expanded state, the sheath having a sheath length, the sheath length being less than the catheter shaft length, in the unexpanded condition the sheath being rotatable about the balloon; and
a stent, the stent being expandable from an unexpanded configuration to an expanded configuration, in the unexpanded configuration the stent is disposed about at least a portion of the distal region of the sheath.
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Specification