title: The 'Allan Johnson' voice prosthesis. A modification of the Bivona voice prosthesis for immediate post-fitting aphonia after secondary tracheo-oesophageal puncture.
abstract: The combination of a narrow oesophageal lumen and a hypertonic pharyngo-oesophageal (P-E) segment following laryngectomy and secondary tracheo-oesophageal puncture (TEP) can cause obstruction of a voice prosthesis and consequently prevent phonation. The 'Allan Johnson' modification of the Bivona voice prosthesis incorporates a stainless steel slide and has been successfully used to remedy such a circumstance.
authors.affiliation: Department of Otolaryngology and Head and Neck Surgery, Charing Cross Hospital, London.
authors.forename: P D
authors.initials: PD
authors.lastname: Spraggs
authors.forename: A
authors.initials: A
authors.lastname: Perry
authors.forename: A D
authors.initials: AD
authors.lastname: Cheesman
mesh_terms: D001044:Aphonia / Q000000981:diagnostic imaging / Q000601:surgery*; D004947:Esophagus / Q000601:surgery*; D006801:Humans; D007825:Laryngectomy; D007831:Larynx, Artificial / Q000295:instrumentation*; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011677:Punctures; D011859:Radiography; D014132:Trachea / Q000601:surgery*