Table 1 Comparison of various rotational mechanical dilator sheaths
From: Rotational mechanical dilator sheaths for effective transvenous lead extraction
TightRail | Evolution | Evolution RL | Comments | |
|---|---|---|---|---|
Inner diameter (ID) | 9.2/11.2/13.2 F | 9/11/13 F | 9/11/13 F | Slightly bigger ID, but lower OD for TightRail |
Outer diameter (OD) | 15.9/18/20 F | 17/19/21 F | 17/19/21 F | |
Outer sheath | Available, but not necessary | Necessary to avoid ‘lead wrapping’ phenomenon | Necessary to avoid ‘lead wrapping’ phenomenon | |
Shaft | Very flexible | Less flexible | Less flexible | |
Length (long/short) | 47.5 cm/15.5 cm | 36.5 cm/11.2 cm | 36.5 cm/11.2 cm | |
Cutting mechanism | Bidirectional (left–right), metal blade | Unidirectional (right), spiral-shaped tip | Bidirectional (left–right), decagon tip | Unidirectional sheath can wrap the leads around the device |
Blades | Shielded within sheath, but exposed by 0.5 mm with each full trigger activation | Always exposed, 2 mm length | Always exposed, 6 mm length | Evolution is more aggressive |
Short version for subclavian crossing | Available, TightRail mini, TightRail Sub-C | Available, Evolution Shortie | Available, Evolution Shortie |