Blom Singer® Low Pressure Non Indwelling

Clinical application

The Blom Singer® Low Pressure prosthesis was developed from the Blom-Singer ® Duckbill prosthesis, as the latter's duckbill valve sat far into the esophageal lumen and occasionally became blocked by esophageal mucus membrane. This resulted in attempts to create a prosthesis with a flat profile from the side. A flap valve was used, which also provided a far lower airflow resistance when talking and resulted in the name "low-pressure" prosthesis.

Type of prosthesis:Low-resistance non-indwelling prosthesis
Outer diameter of shaft:20 Fr or 16 Fr (6.6 mm or 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:no
Prevalence:USA, Europe (rare), South Africa


1. Blom E.D., Singer M.I., Hamaker R.C., Tracheoesophageal Voice Restoration Following Total Laryngectomy, Singular Publishing Group, San Diego, London, (1998)