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Name Sion
Image Sion.jpeg
Device type Guidewire
Class Frontline
Tip coating Hydrophilic
Shaft coating Hydrophilic
Tip load (gf) 0.7
0.7 gf
Tip diameter (inch) 0.014
0.014 inch
0.356 mm
Tip cross-sectional area (mm2) 0.099
0.099 mm²
Penetration force (gf/mm2) 7
7 gf/mm²
Core Composite
Tip shape Straight, J-shaped
Shaft diameter (inch) 0.014
0.014 inch
0.356 mm
Radiopaque length (cm) 3
3 cm
Spring coil length (cm) 28
28 cm
Usable length (cm) 180, 300
Manufacturer Asahi Intecc
Product page Link

Sion is a coronary guide wire from Asahi Intecc. It has a hydrophilic coating providing greater lubricity than Sion Blue, increasing its ability to cross severe stenoses. Its spring coil length is 28 cm (cf. 20cm for Sion Blue), making its shaft more flexible, which in turn increases vessel trackability, and its ability to cross tortuous lesions. It has a tip load of 0.7 gf.