| 摘要 |
A cannula having a tubular body having a proximal end and a distal end and a central axis defined therethrough, a first protruding member coupled to a first region of the tubular body, and a second protruding member coupled to a second region of the tubular body. Further, the tubular body has a bore formed therethrough. Each of the first protruding member and the second protruding member are coupled to an outer surface of the tubular body. Finally, a length of the tubular body is adjustable along the central axis. |
