| 摘要 |
The drain cannula (1) has an axial channel (2) linked to an aperture in its distal end (3) and a series of peripheral apertures (4) round the conical tip (7). The peripheral apertures are located in the base of spiral grooves (6). The proximal end of the cannula has a connector (5) for a suction tube. Preferred Features: The peripheral apertures are located in the base of spiral grooves (6) lying at 20-40 deg to the cannula's axis. The distal end of the cannula can be made from a material with a shape memory effect for use with a stilette-mandrel. |
