New unidirectional airflow ball tracheostomy speaking valve

Otolaryngol Head Neck Surg. 2000 Jul;123(1 Pt 1):103-7. doi: 10.1067/mhn.2000.101576.
No abstract available

Publication types

  • Comparative Study

MeSH terms

  • Equipment Design
  • Humans
  • Pulmonary Ventilation / physiology*
  • Speech Intelligibility / physiology*
  • Tracheostomy / instrumentation*