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A small one-way valve fitted between the windpipe and the gullet after the voice box is removed. Covering the breathing hole in the neck sends air through the valve, and the throat vibrates to make a voice.
The FDA classes voice prostheses as laryngeal prostheses (product code EWL, 21 CFR 874.3730). Atos Medical's clearances include Provox Vega (K090455, 5 June 2009), Provox ActiValve (K092593, 14 October 2010) and the Provox FreeHands FlexiVoice (K141380, 26 September 2014). Helix Medical (InHealth) holds clearances for the Blom-Singer Indwelling 2000 (K991587, 25 June 1999) and Blom-Singer dual valve indwelling prosthesis (K082206, 4 September 2008). The record on voice after laryngectomy covers how the prosthesis is used, why it is changed and why people stop using it.
A silicone one-way valve sits in a surgical puncture between the posterior tracheal wall and the oesophagus; occluding the stoma diverts exhaled air through it into the pharynx, whose tissue vibrates to produce voice, while the valve closes to stop food and drink entering the airway.
Query for this technology: (TITLE:"Voice prostheses after laryngectomy" OR ABSTRACT:"Voice prostheses after laryngectomy" OR TITLE:"Provox, Blom-Singer" OR ABSTRACT:"Provox, Blom-Singer" OR TITLE:"Voice prosthesis" OR ABSTRACT:"Voice prosthesis" OR TITLE:"Tracheoesophageal voice prosthesis" OR ABSTRACT:"Tracheoesophageal voice prosthesis") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about Voice prostheses after laryngectomy (Provox, Blom-Singer), not a curated reading list.
Shares The devices that do the restoring, and who pays for them and the tag devices-gaps-2026-11.
Shares Head and neck squamous cell carcinoma and the tag devices-gaps-2026-11.
Shares Head and neck squamous cell carcinoma and the tag devices-gaps-2026-11.
Shares Hypopharyngeal cancer, Laryngeal and hypopharyngeal cancer.
Shares Hypopharyngeal cancer, Laryngeal and hypopharyngeal cancer, Head and neck squamous cell carcinoma.
Shares Voice after the larynx is removed, Hypopharyngeal cancer, Laryngeal and hypopharyngeal cancer, Head and neck squamous cell carcinoma.
Shares Voice after the larynx is removed, The devices that do the restoring, and who pays for them, Laryngeal and hypopharyngeal cancer, Head and neck squamous cell carcinoma.
Shares Hypopharyngeal cancer, Laryngeal and hypopharyngeal cancer, Head and neck squamous cell carcinoma.
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