Radiolucent screw with radiopaque marker

摘要

A bone screw includes an elongate shaft extending longitudinally between a proximal end and an opposing distal end, the shaft bounding a first passageway at least partially extending between the proximal end and the distal end, the shaft being comprised of a radiolucent material. A core is disposed within the first passageway of the shaft, the core being comprised of a radiopaque material. A rounded head or a substantially U-shaped collar is either integrally formed with or is rigidly attached to the proximal end of the shaft.

主权项

1. A method of manufacturing a bone screw, the method comprising:
forming an elongated shaft about a core, the shaft having a longitudinal axis extending between a proximal end and an opposing distal end, the core extending along the longitudinal axis, the shaft being comprised of a radiolucent material and the core being comprised of a radiopaque metal, the shaft being formed by winding a flat sheet comprised of radiolucent fibers impregnated with an adhesive directly on the radiopaque core so that the adhesive binds directly to the core and so that the fibers radially encircle the core; and forming a helical thread on an exterior surface of the shaft by removing a portion of the exterior surface of the shaft.