Table 1:

Neurovascular thrombectomy devices

Description	Solitaire FR 4 mm	Solitaire FR 6 mm	Catch	Merci Retriever V 2.5 Firm	Penumbra 0.32
Recommended guide catheter (F)	6	6	6	9	6
Microcatheter (F)	2.4	2.8	2.4	2.4	3.4
Element design	Stent retriever	Stent retriever	Basket-like	5 Helical loops	Aspiration
Outer diameter (mm)	4	6	4	2.5	Not described
Length (mm)	20	20	18	6	30
Recommended vessel diameter (mm)	2.0–4.0	3.0–5.5	≤4	2.0–3.5	2.0–3.0

Note:—F indicates French.