Patent ID: 11931080
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 15:
16. A method for rotationally positioning a threaded plug in a bone anchor receiver, the method comprising:
providing the bone anchor receiver including a longitudinal axis, a base, an upper portion with a pair of upright arms defining a channel, interior surfaces, exterior surfaces opposite the interior surfaces, and a helically wound thread form formed at least partially within the interior surfaces, the channel extending between a front planar surface and a back planar surface on each of the pair of upright arms and communicating with a top surface defining a top of the bone anchor receiver, the front planar surface and the back planar surface being parallel with respect to each other and with the longitudinal axis;
providing the threaded plug, the threaded plug comprising a cylindrical body having a constant diameter formed around a central axis and an external surface with a lower annular edge adjacent a most bottom surface of the cylindrical body and a continuous helically wound thread form formed on at least a portion of the external surface, a lower end of the thread form extending down so as to be located at least adjacent to the lower annular edge, the thread form of the threaded plug having a leading surface and a trailing surface extending outwardly with respect to the central axis of the cylindrical body of the threaded plug, the thread form integrally formed with the external surface of the cylindrical body at a base thereof and having a first width at the base, the leading and trailing surfaces of the thread form defining a second width that is equal to the first width at a position that is spaced radially outward with respect to the base, the thread form including a cylindrical surface on a crest of the thread form having at least one partially rounded outer edge formed thereon;
positioning the threaded plug within the channel; and
rotatably engaging the threaded plug with the helically wound thread form of the bone anchor receiver,
wherein, when the bone anchor receiver is in the locked configuration with the threaded plug, the threaded plug does not extend over any part of the top surface defining the top of the bone anchor receiver.