Locking member for a bone fixation device

A bone fixation device comprising:

• a stem including a first end and a second end that is spaced from the first end along a first direction, the stem further including a stem body and a plurality of teeth that extend out from the stem body and are spaced from each other along the first direction, the stem defining a maximum width from an exterior surface of the stem body to an outermost surface of at least one of the plurality of teeth along a second direction that is substantially perpendicular to the first direction;
• a first member coupled to the stem proximate to the first end;
• and
• a second member including a member body, the second member including:
• a slot that extends through the member body along the first direction, the slot being defined by at least one internal surface of the member body;
• at least one tooth that extends from the at least one internal surface and into the slot;
• and
• a biasing member that extends from the member body and into the slot, the second member defining a member distance between the biasing member and the internal surface along the second direction, wherein the biasing member is flexible between a first position and a second position, such that when in the first position the member distance is less than the maximum width,
• wherein the slot is configured to receive the stem such that the stem causes the biasing member to flex from the first position to the second position whereby the member distance is substantially equal to the maximum width, such that the biasing member biases the stem toward the internal surface so as to interlock at least one of the plurality of teeth with the at least one tooth.

A method of affixing a first anatomical structure to a surrounding skull portion, the method comprising:

• positioning a locking member such that (i) a first clamp member of the locking member is proximate to respective inner surfaces of the first anatomical structure and the surrounding skull portion and (ii) a toothed stem of the locking member that extends from the first clamp member along a first direction protrudes out from between the first anatomical structure and the surrounding skull portion such that a portion of the toothed stem is external to the surrounding skull portion;
• inserting the toothed stem through a stem receiving slot of a second clamp member such that a biasing member of the second clamp member that extends into the stem receiving slot biases the toothed stem toward at least one tooth of the second clamp member that extends into the stem receiving slot;
• and
• translating the second clamp member along the toothed stem and toward the first clamp member such that at least one tooth of the toothed stem engages the at least one tooth of the second clamp member to thereby prevent the second clamp member from translating along the toothed stem away from the first clamp member.