| 摘要 |
An HME device (10) for a tracheal tube (1) has a housing (11) with an HME element (15) and (16) at each end and a central tracheal coupling (17) that fits on the machine end connector (5) of the tracheal tube. A suction port (20) is located directly opposite the tracheal coupling (17) and has an external screw thread (21) and an internal flap valve (22). A closed system suction catheter arrangement (30) has an internally threaded patient end fitting (31) that sealing couples with the suction port (20). A suction catheter (35) extends from the patient end fitting (31) to a machine end fitting (40) adapted to connect with a suction source (41), (42), (43). A flexible, protective envelope (46) extends around and along the catheter (35) from the patient end fitting (31) to the machine end fitting (40). The suction catheter (35) can be advanced into the tracheal tube (1), through the HME device (10) by manipulation through the envelope (46) without the need to directly contact the catheter. |
