| 主权项 |
1. A catheter system, comprising:
a stent delivery catheter having a proximal end and a distal end and an interior lumen extending between the proximal end and the distal end; a stent having a proximal end and a distal end and a stent lumen extending between the proximal end and the distal end, the stent having an expanded state and an unexpanded state; and an embolic protection filter having an expanded state and an unexpanded state; the catheter system having a deployed position and an undeployed position, a guidewire having a guidewire shaft, wherein the embolic protection filter is slidably mounted on the guidewire shaft; wherein the embolic protection filter comprises: a filter member connected to a distal filter cylinder having an inner diameter D1 larger than an outer diameter d2 of the guidewire shaft; a plurality of connecting wires having a first end connected to an outer periphery of the filter member and a second end connected to a proximal filter cylinder having an inner diameter D2 larger than the outer diameter d2 of the guidewire shaft; and an actuation member attached to the guidewire shaft, the actuation member having an outer diameter d1 that is larger than the outer diameter d2 of the guidewire shaft and larger than the inner diameter D2 of the proximal filter cylinder; wherein, when the catheter system is in the undeployed position, the stent is in its unexpanded state and positioned within the interior lumen of the stent delivery catheter and the embolic protection filter is in its unexpanded state and positioned within the stent lumen of the stent. |
