Pedicle screw systems and methods of assembling/installing the same

A tulip assembly comprising:

• a pedicle screw having a threaded portion and a head portion, said head portion being polyaxial;
• a rod having a rod axis;
• a tulip body that is monolithic, said tulip body having a rod capture channel defined by at least one tulip body wall, said rod capture channel being configured to receive said rod, said tulip body including an outer body defining a central bore that extends along generally longitudinal axis of said tulip body for receiving said pedicle screw;
• an inner component adapted to be received within said central bore having an inner component rod capture channel defined by at least one inner component wall;
• wherein said inner component rod capture channel includes a rod reception portion and a rod securing portion, said rod securing portion being, generally transverse to said rod reception portion and includes said at least one inner component wall;
• and
• said central bore being adapted to receive said pedicle screw, head portion first;
• at least one of said rod capture channel or said inner component rod capture channel being configured to receive and capture said rod and lock said rod to said tulip body via a relative rotation of said tulip body and said inner component relative to said rod;
• at least a portion of each of said rod capture channel and said rod reception portion being adapted so that said rod can move along said generally longitudinal axis to be simultaneously received in both said inner component and said tulip body and, thereafter, relative rotation of said tulip body and inner component moves said rod from said rod reception portion to said rod securing portion such that said at least one inner component wall and said at least one tulip body wall cooperate to capture and lock said rod in said tulip body, with at least one of said inner component or said tulip body rotating about a said generally longitudinal axis during said relative rotational movement that is not coaxial with said rod axis.