Case Examples

Following initial roadmapping, the physician may diagnose a potential threat to distal embolization in the vessel. PROTEUS can be a very useful tool as a primary PTA of the lesion, while capturing and removing the embolic material through its proprietary suction mechanism.

Acute, totally occluded long ISR lesion in the left SFA. A femoral crossover approach using a 7Fr introducer sheath was taken. During roadmapping, the proximal segment showed evidence of irregular flow. A 6x100mm PROTEUS device was used for angioplasty and debris removal (2min @ 8 atm) through its suction mechanism. The distal SFA was treated with a standard PTA balloon. Post angiography revealed a patent vessel with no distal embolic events. Analysis of the removed particles showed evidence of chronic thrombus.

Post diagnosis, a physician may choose to dilate/prepare the vessel prior to stenting. PROTEUS can serve as the first device in the lesion for pre-dilatation combined with embolic capture and removal of liberated embolic material.

Road mapping revealed two, sub-occlusive, heavily calcified de-novo lesions with irregular flow patterns in right SFA. A 6Fr sheath was placed in a retrograde fashion followed by two 5x60mm PROTEUS device deployments for vessel preparation (2min @ 12atm) and embolic capture and removal through its suction mechanism. The lesion was finally stented using a self expendable stent providing a nicely patent vessel and distal flow. Two, >5mm long, particles were recorded during examination of the removed material.

Post atherectomy, ballooning may cause particle dislodgement from the irregular vessel wall and can lead to distal embolization events. PROTEUS can be an effective tool to contain and remove released particles.

The patient was identified with long multi segment stenotic and in-stent restenosis lesions in the left SFA. Laser atherectomy was initially used to ablate the tissue. A 6x100mm PROTEUS device was used for PTA (2 min @ 8 atm) and embolic removal. Final angiography showed a patent stent and lesion with no residual stenosis. Removed embolic debris contained a moderate quantity of particles including two particles of over 4mm in diameter.