Provox FreeHands HME

A solution for the need for digital stoma occlusion in prosthetic tracheoesophageal speech is the use of an automatic speaking valve. Such a device should not only incorporate a valve mechanism that allows airtight occlusion of the stoma and, thus, diversion of pulmonary air into the pharyngoesophageal PE segment (or neoglottis) for voicing, but also should optimally integrate a heat and moisture exchanger (HME), which is indispensable for pulmonary rehabilitation.

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The Provox FreeHands HME (see figures and videoclips) is an automatic speaking valve, which has the following properties:

• • an HME is the basic and mandatory part of the device, situated directly in front of the stoma to keep the valve free of mucus;
    
    
  • inhalation takes place through side openings to allow breathing in pre-heated and pre-moisturized air from the body;
    
    
  • voicing is possible with low air pressures by keeping the flexible speaking valve closed with magnets;
    
    
  • the speaking valve comes in three different flexibilities to accommodate individual patient needs;
    
    
  • a locking position protects against involuntary closure of the speaking valve during physical exertion;
    
    
  • a self-centering, freely movable cough relief valve acts as cover, and the force needed for its opening is individually adjustable by means of magnets;
    
    
  • optimal cleaning and hygiene is achievable by means of a special cleaning container;
    
    
  • the device is usable in combination with existing valve housings, e.g. Provox HME adhesives and/or LaryTube cannulas.