According to its manufacturer, the Adeva® BigFlow prosthesis is intended for use in cases of spontaneous shunt expansion. The large outer and inner diameters produce a low flow resistance when speaking. The wing-shaped discs (flange) guarantee a safe position in the shunt.
CAVE: There is some debate as to whether the introduction of a prosthesis with a large shaft diameter is of any benefit in cases of spontaneous shunt expansion (see Literature).
|Type of prosthesis:||Low-resistance non-indwelling/indwelling prosthesis|
|Outer diameter of shaft:||9mm / 11mm|
|Valve type:||flap valve with enclosure|
|Method of insertion:||anterograde using ear forceps|
|Indication:||special prosthesis for shunt expansion|
|Non-fatiguing valve mechanism:||no|
1. Blom ED., Some comments on the escalation of tracheoesophageal voice prosthesis dimensions. Arch Otolaryngol Head Neck Surg. 2002 Jul;128(7):838-41.