Cuffed oro-pharyngeal airway

A - Human Necessities – 61 – M

Patent

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Details

A61M 16/01 (2006.01) A61M 16/04 (2006.01) A61M 25/10 (2006.01)

Patent

CA 2170163

A new type of airway, the cuffed oro-pharyngeal airway (COPA) (10), is described, which may be used as a less cumbersome alternative to face mask/oral airway technique for maintenance of general anesthesia. The airway includes an elongated tube (12) having a length such that the proximal end (20) is adapted to be disposed adjacent to, but outside, the oral cavity of the patient, and the distal end (36) is adapted to be disposed in the lower pharynx of the patient, above the epiglottis (26). An inelastic, inflatable cuff (14) is mounted to the tube adjacent the distal end (36). On inflation, the inflatable cuff displaces the soft palate against the nasal pharynx to seal off the nasal passages and defines a seal between the tube and the pharyngeal wall. The inflatable cuff (14) also displaces the base of the patient's tongue (30), thereby locking the tube in the pharynx and displacing the patient's epiglottis (26) to a more open disposition for more effective anesthesia gas delivery to the lungs.

L'invention se rapporte à un nouveau type de tubage endotrachéal, la canule buccopharyngée à ballonnet (COPA) (10), qui peut être utilisée comme une solution de remplacement moins encombrante par rapport au masque facial/technique d'intubation buccale afin d'assurer l'anesthésie générale. La canule comprend un tube allongé (12) dont la longueur permet que l'extrémité proximale (20) puisse être placée à côté, mais en dehors, de la cavité buccale du patient, et l'extrémité distale (36) dans le pharynx inférieur du patient, au-dessus de l'épiglotte (26). Un ballonnet gonflable, inélastique (14) est fixé sur le tube adjacent à l'extrémité distale (36). Lors du gonflement, le ballonnet gonflable déplace le voile du palais contre le pharynx nasal afin de boucher les voies nasales et forme une obturation entre le tube et la paroi pharyngée. Le ballonnet gonflable (14) déplace également la base de la langue (30) du patient, ce qui bloque le tube dans le pharynx et déplace l'épiglotte (26) du patient vers une position plus ouverte de façon à administrer plus efficacement le gaz anesthésiant dans les poumons.

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