Conversation so far:
what is the difference between endotracheal and tracheostomy tube
An endotracheal tube is placed into the trachea through the mouth and vocal cords while a tracheostomy tube is placed by a surgical opening through the neck to the trachea.
what are the tracheal tubes for
Tracheal tubes are commonly used for airway management in the settings of general anesthesia, critical care, mechanical ventilation, and emergency medicine
who developed disposable tracheal tubes
Maeterlinck GmbH developed the disposable endotracheal tube and produced a plethora of design variations
what are endotracheal tubes made of
Most endotracheal tubes today are constructed of polyvinyl chloride, but specialty tubes constructed of silicone rubber, latex rubber, or stainless steel are also widely available.

Question: what about trachesotomy tubes
Self-contained rewrite: what are tracheostomy tubes made of