Stent retrievers
| Stent retriever | Company | FDA approval | Design/Shape | Study | Outcomes |
|---|---|---|---|---|---|
| Solitaire FR | Medtronic | 2012 | Self-expanding stent cut into a nitinol plate with a honeycomb pattern | SWIFT-PRIME [19]SWIFT-DIRECT [23]REVASCAT [24]EXTEND-IA [25]ESCAPE [26] | Successful revascularization achieved in 91% (thrombectomy alone; up to 96% with alteplase) |
| Trevo XP | Stryker | 2012 | Self-expanding stent with a unique distal shaped section for clot retrieval; its platinum marker allows fluoroscopic control of the distal portion | DAWN [27]TREVO 2 [28] | Successful revascularization achieved in 86% |
| Merci | UCLA Health | 2004 | Stent formed of nitinol with a characteristic helical shape that traps the clot once deployed. Often combined with BGC to prevent anterograde flow | MERCI [29]SWIFT [22]TREVO 2 [28] | Successful revascularization achieved in 60%; 19% device-related subarachnoid hemorrhage |
| EmboTrap | Johnson and Johnson | 2018 | Dual-layer construct to improve clot engagement and distal mesh to reduce emboli | ARISE [30] | Successful revascularization achieved in 80.2%; 67% with functional independence at 90 days |
| Versi | NeuroVasc | Stent formed with nitinol that has three articulated stent segments that facilitate opening during retrieval | Sakai et al. [31] | Successful revascularization achieved in 100% (11 patients); 72.7% favorable functional outcomes (mRS 0–2) at 90 days | |
| ERIC | MicroVention Terumo | Three to five interlinked cages preventing the clot from shearing off during retraction | ETIS [32] | Successful revascularization achieved in 82%; 40% favorable outcome (mRS ≤ 2) | |
| Tigertriever | Rapid Medical | Device with handle that allows physician to expand or contract the mesh | Kara et al. [33] | Successful revascularization achieved in 75.4%; 27.9% with favorable clinical outcomes |
mRS: modified Rankin scale; UCLA: University of California, Los Angeles