| 摘要 |
An obturator 2, 2' for a tracheostomy tube 1 has a handle 25, 25' and an enlarged, hollow patient end 21, 21' divided between a tapering forward section 22, 22' and a rear section 23, 23' having a constant, oval cross section. The obturator 2, 2' is inserted in the tracheostomy tube 1 so that the tapering section 22, 22' is located forwardly of the patient end 11 and the oval section 23, 23' extends through the patient end of the tube. The oval shape of the obturator 2, 2' provides a smooth transition between the obturator and the patient end 11 of the tube 1 because the patient end of the tube is distorted to an oval shape when it is straightened by insertion of an obturator. <IMAGE> |
