| 摘要 |
In combination, a tracheostomy tube (100) including a curved cannula (20) lying substantially within a given plane and formed with a non-constant radius, and an obturator means (10) insertable into the cannula for guiding intubation of the tracheostomy tube into the cannula. The obturator comprises a single piece member formed of a resilient and flexible material and curvable upon insertion within the cannula with a non-constant radius lying within the given plane, the member having proximal (12) and distal (11) ends and a shaft (13) extending therebetween, the shaft over a substantial portion of its length being dimensioned such as to impart sufficient rigidity both in the direction substantially perpendicular and also substantially parallel to the given plane. The shaft also inculdes a first flexible portion being of substantially rectangular cross-section having a width and a thickness. |
