Blom-Singer® DUAL VALVE™

Clinical application

The aim behind the development of the Blom-Singer® DUAL VALVE™ prosthesis was to manufacture a voice prosthesis with a functional retention period of around 6 months at an economically feasible price. To this end, two valves were integrated in the prosthesis with the idea that in the event of a defect in the esophageal valve, the second valve, in a tracheal position, would continue to seal. In order to make the valves resistant to biofilm growth, the two valves in the DUAL VALVE™ prosthesis are made of silver oxide silicone. The fear that two valves could increase the airflow resistance of the prosthesis when speaking was addressed by using valves that open easily. A brush is no longer recommended for cleaning the DUAL VALVE™; it can be flushed with water.