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TRACHEOSTOMY TUBE ASSEMBLIES, INNER CANNULAE AND METHODS OF MAKING INNER CANNULAE
TRACHEOSTOMY TUBE ASSEMBLIES, INNER CANNULAE AND METHODS OF MAKING INNER CANNULAE
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机译:气管插管总成,内套管和内套管的制造方法
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摘要
An inner cannula (20) for a tracheostomy tube assembly includes a thin, inner sheath (22) supported externally by a structural frame (23) having a longitudinal portion (25) and a plurality of ribs (26) extending circumferentially and spaced along the cannula. The inner cannula (20) is inserted within and is removable from an outer tracheostomy tube (1). The inner cannula (20) is made by coating a plastic layer on a core to form the sheath and then placing the sheath on a curved core. The structural frame (23) is then moulded about the sheath (22) in a mould 80. 展开▼