The Need of Slanted Side Holes for Venous Cannulae

Table 1

Geometrical dimensions of model cannulae and blood vessel.

Length	200 mm
Inner diameter	7 mm
Wall thickness	1 mm
Side hole diameter	2 mm
Side hole interval	10 mm
Array type	Staggered array
Angle of side holes	0°, 15°, 30° and 45°
Number of side holes	0 (no side holes), 4, 8 and 12
Blood vessel diameter	20 mm
Blood vessel length	80 mm