17/129,237

Paragraph Number

91

In certain embodiments, activation of the expansion mechanism 160 can include insertion of the expansion mechanism 160 into the opening 150. In such an embodiment, the driver 162 may include a force pressing the expansion mechanism 160 into the opening 150. In the illustrated embodiment, the expansion mechanism 160 is embodied as a screw member 400 and the driver 162 is the drive recess 502. The expansion mechanism 160 may be activated by inserting the distal end 408 of the screw member 400 into the opening 150 and arranging the threads 410 such that they engage the internal threads 154 and then engaging the drive recess 502 and rotating the screw member 400 about its longitudinal axis 414 in a direction that causes the screw member 400 to move further into the opening 150. Engagement of the drive recess 502 and rotating the screw member 400 about its longitudinal axis 414 is referred to herein as activation of the driver 162, for this embodiment. As the screw member 400 moves further into the opening 150, the opening 150 enlarges to accept the screw member 400.

Added by DJM 2 2021