Adeva® BigFlow

Clinical application

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
Shaft lengths: 8,5mm
Material: medical-grade silicone
Valve type: flap valve with enclosure
Method of insertion: anterograde using ear forceps
Indication: special prosthesis for shunt expansion
Biofilm resistance: no
Underpressure stability: no
Non-fatiguing valve mechanism: no
Prevalence: low


1. Blom ED., Some comments on the escalation of tracheoesophageal voice prosthesis dimensions.  Arch Otolaryngol Head Neck Surg. 2002 Jul;128(7):838-41.