| 摘要 |
A method and apparatus for simplifying carotid artery stenting and/or angioplasty provides for the use of a filter wire system, which employs a sliding sheath. The sheath has an undeployed state and a deployed state, wherein in the undeployed state a distal region of the sheath is disposed about an embolic protection filter and a proximal region extends proximal from the distal region. At least a portion of the proximal region has a first end region, a second end region and a length there between. The first end region is proximal of the second end region. The at least a portion of the proximal region has a graduated stiffness along the length, wherein the stiffness is greatest at the first end region and is least at the second end region.
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