| 摘要 |
A tracheal tube assembly comprises an outer tube 1 for insertion within the trachea 3 of a patient, and an inner tube 2 that extends within the outer tube. The inner tube 2 is circumferentially corrugated so as to be flexible about its length and is formed with at least one groove 28, 29, or elongate reinforcing member traversing the corrugations 27. The inner tube 2 may have two grooves 28, 29 located on opposite sides of the tube and extending parallel to its length. The grooves 28, 29 may be separated from one another along the length of the inner tube 2. Alternatively, the inner tube 2 may have a groove extending helically about it, or several grooves parallel to the length of the inner tube separated from one another along its length in a helical fashion. <IMAGE> |
