Control Member For Adjusting Access Tude Positions, and Related Systems and Method

A control member for mounting to an end of an access tube, comprising:

• a body defining a proximal end and a distal end spaced from each other along a central axis and a bore extending from the proximal end to the distal end along the central axis and configured to receive instrumentation, the body further defining a handle portion extending to the proximal end and a mounting formation extending to the distal end, the mounting formation including:
• an insertion portion insertable within the access tube;
• and
• a lip opposed to the insertion portion so as to define a receptacle therebetween,
• wherein the receptacle is configured to receive an end portion of the access tube.