Timothy Bateman,Stephen James Field,Christopher Stratton Turnbull
申请号：
US14767637
公开号：
US20150374942A1
申请日:
2014.02.05
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A tracheostomy tube assembly includes an outer tracheal tube (1) and a removable inner cannula (20). The inner cannula (20) has a corrugated outer surface (23) but a smooth inner surface (22). At its patient end the inner cannula (20) has an integral tip (26) with a smooth outer surface that forms a close sliding fit with the inside of the outer tube (1). At its rear, machine end the inner cannula has an integral hub (30) that fits in a hub (18) on the outer tube. The smooth inner surface (22) of the inner cannula (20) allows non-turbulent gas flow along the assembly and facilitates insertion of devices along the cannula.
