title: Development and first data of a customized short tracheal cannula based on digital data.
abstract: OBJECTIVE
  At the moment, there is an inadequate margin fit of commercially available stoma buttons. The aim of the present study was to develop a customized short tracheal cannula based on digital data. Furthermore, the applied material has to be evaluated considering germ colonization and appropriate cleaning procedures.
  
  
  METHODS
  Computed tomographies of 53 patients who underwent laryngectomy were surveyed. Based on the digital data, a customized short tracheal cannula was created and manufactured from silicone. The new cannula was incorporated in ten patients and worn for 4 weeks. A clinical examination of an otolaryngologist and subjective assessment of the patients were carried out. Furthermore, microbiological test considering germ colonization was performed.
  
  
  RESULTS
  The customized short tracheal cannula could be incorporated in all patients. The clinical results showed no irritation or mucosal lesions. The subjective individual evaluation by the patients was promising. The proposals for improvement could be considered. The microbiological examination revealed a higher contamination of the silicone compared to the silver cannulas. Both chemical and mechanical decontamination showed sufficient results.
  
  
  CONCLUSIONS
  A workflow for development and manufacturing of a customized short tracheal cannula from digital data could be established. The cannula is compatible to standard equipment and routine cleaning procedures. Clinical studies are required to evaluate the potential benefit for patients.
authors.affiliation: Department of ENT, University Hospital "Carl Gustav Carus", Technische Universität Dresden, Fetscherstr 74, 01307, Dresden, Germany.
authors.forename: Rainer
authors.initials: R
authors.lastname: Müller
authors.forename: Heike
authors.initials: H
authors.lastname: Meißner
authors.forename: Gunter
authors.initials: G
authors.lastname: Böttcher
authors.forename: Lutz
authors.initials: L
authors.lastname: Jatzwauk
authors.forename: Ludwig
authors.initials: L
authors.lastname: Kant
authors.forename: Matthias C
authors.initials: MC
authors.lastname: Schulz
authors.forename: Bernd
authors.initials: B
authors.lastname: Reitemeier
mesh_terms: D000328:Adult; D000368:Aged; D057785:Catheters; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014132:Trachea / Q000473:pathology; D014139:Tracheostomy / Q000379:methods*