Blom-Singer® Classic Indwelling

Clinical application

The Blom Singer® Classic Indwelling prosthesis is made entirely of silicone with no reinforced shaft. Insertion with the gel capsule is atraumatic and flexible. The valve is slightly prone to shear stress. The esophageal flange contrasts in x-rays. European designs give the shaft length in mm on the tracheal flange. The 20 fr design of the Blom-Singer® Classing Indwelling prosthesis is approximately the same as the Provox 2 in use, and despite the minor difference in the outer shaft diameter they can usually be used as a substitute for each other.

Type of prosthesis:low-resistance indwelling prosthesis
Outer diameter of shaft:20 Fr or 16 Fr (6,6 mm oder 5,9 mm)
Shaft lengths:4-22 mm in 2 mm increments
Material:medical-grade silicone
Valve type:flap valve
Method of insertion:gel capsule, anterograde
Indication:Standard prosthesis
Biofilm resistance:no
Underpressure stability:no
Non-fatiguing valve mechanism:nein
Prevalence:USA, Europa, Asia


1. Speech rehabilitation after total laryngectomy: long-term results with indwelling voice prosthesis Blom-Singer., Chone CT, Spina AL, Crespo AN, Gripp FM., Braz J Otorhinolaryngol. 2005 Jul-Aug;71(4):504-9
2. Schäfer P, Klützke N, Schwerdtfeger FP., Voice restoration with voice prosthesis after total laryngectomy. Assessment of survival time of 378 Provox-1, Provox-2 and Blom-Singer voice prosthesis
Laryngorhinootologie. 2001 Nov;80(11):677-81.
3. Blom E.D., Singer M.I., Hamaker R.C., Tracheoesophageal Voice Restoration Following Total Laryngectomy, Singular Publishing Group, San Diego, London, (1998)

Andreas Fahl Medizintechnik Vertrieb GmbH

August-Horch-Str. 4a
51149 Köln