| 主权项 |
1. A surgical method comprising:
providing an orthopedic device having a cavity;
providing an anchor assembly comprising a head portion and a shank portion integrally attached to and extending distally from the head portion along a central longitudinal axis, the head portion having a central opening surrounded by at least one resilient element, the shank portion including a central longitudinal opening formed by inner surface of the shank portion, wherein the inner surface of the shank portion includes a first recess and a second recess extending along a longitudinal edge and separated an axial distance from one another;passing the anchor assembly through the cavity of the orthopedic device until the head portion is received in the cavity and the head portion directly engages with an inner surface of the cavity;providing and inserting a locking mechanism having a head member and a non-threaded shaft member into the central openings of the anchor assembly, such that when inserted, the locking mechanism having an unlocked position and a locked position to lock the anchor assembly in the cavity of the orthopedic device by preventing the at least one resilient element from flexing inwardly toward the central longitudinal axis of the anchor assembly,wherein the locking mechanism includes an annular protrusion extending around a circumference of the non-threaded shaft member, the annular protrusion matingly engage with the first recess and the head member positioned above the head portion when the locking mechanism is in the unlocked position, andapplying a downward force to slide the locking mechanism within the central openings of the anchor assembly to disengage the annular protrusion from the first recess and into engagement with the second recess and to seat the head member in the central opening of the head portion to prevent the at least one resilient element from flexing inwardly toward the central longitudinal axis such that the locking mechanism is in the locked position, andwherein the shaft member of the locking mechanism includes an enclosed hollow portion, when in the locked and unlocked positions, which allows at least a portion of the shaft member of the locking mechanism to flex inwardly to allow the annular protrusion to disengage from the first recess and engage with the second recess. |
