Patent ID: 11918255
Assignee: NUVASIVE SPECIALIZED ORTHOPEDICS, INC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 15:
16. A system comprising:
a first pedicle screw;
a second pedicle screw;
an adjustable rod comprising:
an outer housing coupled to the first pedicle screw, the outer housing having a threaded shaft extending along an interior portion thereof;
an inner shaft coupled to the second pedicle screw, at least a portion of the inner shaft telescopically adjustable within the outer housing;
a hollow magnetic assembly comprising a hollow magnetic element disposed therein, the hollow magnetic element disposed around at least a portion of the threaded shaft, the hollow magnetic assembly having an internal threaded surface configured to engage the threaded shaft, the hollow magnetic assembly being rotatably coupled to the second pedicle screw by a rotational coupling; and
a thrust bearing disposed between the magnetic assembly and the second pedicle screw,

wherein the hollow magnetic assembly rotates in response to an externally applied magnetic field to thereby lengthen or shorten a distance between the first pedicle screw and the second pedicle screw,
wherein the hollow magnetic assembly is configured to threadably engage the threaded shaft.