| 摘要 |
An intravascular distal protection device, comprising a guidewire having a proximal end and a distal end, a filtering material disposed about the guidewire, the filtering material having a proximal edge defining a proximally facing opening when in an expanded position, a hoop wire having a proximal end and a distal end and slidably attached to the proximal edge, the hoop wire wrapped in a helical coil about the guidewire in a first contracted position and defining a hoop at the proximal end of the filtering material in the expanded position, and an actuation member attached to the hoop wire and extending at least substantially to the proximal end of the guidewire and configured to move the hoop wire between the first contracted position and the expanded position.
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