Table 4:

Structure comparison among different flow diverters

Type	Size (mm)	Braided Microfilaments^{^a}		Radio-Opaque Microfilaments	Flared End	Metal Coverage	Retrievable
Type	Size (mm)	No.	Material	Radio-Opaque Microfilaments	Flared End	Metal Coverage	Retrievable
Pipeline	3–5.5	48	75% Cobalt chromium and 25% platinum	NA	No	30%–35%	No^{^b}
Silk	2.5–5	48	Nickel-titanium alloy	4 Platinum wires	Yes	35%–55%	Yes
Surpass	2.5–5	2.5 mm, 36; 3 and 4 mm, 60; 5 mm, 84	Cobalt-chromium	12 Platinum wires	No	30%	NA
Tubridge	2.5–6.5	<3.5 mm, 46; ≥3.5 mm, 62	Nickel-titanium alloy	2 Platinum-iridium wires	Yes	30%–35%	Yes

Note:—NA indicates not applicable.
↵a Braided microfilaments mean those main wires excluding microfilaments especially for radio-opaque usage.
↵b The Pipeline Embolization Device is not retrievable, but at any point up to final deployment, it may be captured and removed from the body.