| 摘要 |
An endoscopy cannula system for accessing an internal operative site. The cannula access system includes a cannula having a tapered body and defining at least two access lumens extending therethrough. The two access lumens provide multiple access to the internal operative site from a single access location. The cannula further includes a fixation feature capable of securing the cannula relative to an access wound and to potentially providing retraction of overlying tissues proximal to the surgical site. The system also includes an obturator associated with each lumen. The obturators include a tapered distal tip which extends from the distal end of the cannula in an installed position. The tapered distal tips of the obturators provide the cannula with a generally continuously tapered profile to facilitate insertion through an access wound.
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