PMC3420382_01
Successful use of the CrossBoss and Stingray catheter. (a) Angiography showing occlusion of the right superficial femoral artery (SFA) at its ostium (arrow). (b) Angiography showing the distal SFA reconstituted by collateral flow from the right profunda. (c) Wire inside the StingRay balloon catheter (arrow). The catheter is within the subintimal space distal to the SFA occlusion. The two radio-opaque dots are the two exit ports on the catheter. (d) Wire advanced through the StingRay balloon catheter (arrow) exiting into the true lumen of the distal SFA. (e) Postinterventional final angiogram revealing antegrade flow through the previously occluded SFA.
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fig2
Re-Entry System guide wire advanced through the catheter and exited the distal port of the balloon catheter as designed, penetrating the intima into the true lumen of the popliteal artery. Subsequently, the patient underwent angioplasty and atherectomy after placement of a distal protection device. Right iliac angiogram with runoff postintervention was performed with digital subtraction imaging revealing good angiographic results (Figure 2).
PMC3420382_02
Unsuccessful use of the CrossBoss and Stingray catheter. (a) Angiography showing occlusion of the left superficial femoral artery (SFA) at its ostium (arrow). The course of the occluded vessel is outlined by areas of calcification (arrowheads). (b) Wire inside the CrossBoss catheter (arrow) crossing an occluded, calcified segment. (c) Wire advanced through the StingRay balloon catheter (arrow) trying to gain entry into the true lumen of the distal SFA. (d) Wire back into the StingRay balloon catheter with final angiography showing retrograde filling of the distal SFA and some contrast extravasation (arrowhead).
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fig3
The procedure was then aborted (Figure 3).