主权项 |
1. An anchor, comprising:
a cylindrical member having a longitudinal axis which passes through a member first end and a member second end; a helical thread coupled to said cylindrical member; and a tether restraint element coupled proximate said member second end, said tether restraint element having a configuration adapted to guide a movably coupled tether end toward a position on said tether restraint which directs forces transmitted to said tether restraint element from said tether end in a direction which acts to rotationally advance said cylindrical member into an anchoring material. |