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Features of the Portex Inner Cannula: ID (mm): 8.0 mm. Inner Cannula for use with 9.0 mm Tubes (SMD-505090 and SMD-504090). The Portex® flexible disposable inner cannula tracheostomy tubes are constructed of siliconized polyvinyl chloride, providing a softer and more pliable tube to reduce risk of tracheal trauma.
Built-in 15 mm ISO termination for easy ventilator circuit attachment with or without inner cannula in place..