Patent ID: 11857226
Assignee: NUVASIVE SPECIALIZED ORTHOPEDICS, INC
Field: Medical technology (Instruments)
Classification: CPC A  Y | IPC A

Claim 10:
11. A distraction device for manipulating a portion of a skeletal system of a subject, the distraction device comprising:
a monolithic member having a first end and a second end, the first end configured for attachment to a first portion of the skeletal system and the second end comprising a housing having an axially extending cavity;
a distraction rod having a first end and a second end, the first end having an inner threaded cavity extending along at least a portion of a length thereof, the first end configured to be coaxial with and movable within the axially extending cavity, and the second end configured to extend from the axially extending cavity and to attach to a second portion of the skeletal system;
a rotatable, radially poled magnet rotationally coupled to a lead screw having male threads, the threads being engaged with the inner threaded cavity of the distraction rod, wherein rotation of the magnet is configured to cause rotation of the lead screw;
a maintenance member secured to the monolithic member, the maintenance member being configured to magnetically attract at least one pole of the rotatable, radially poled magnet;
wherein the magnet and at least a portion of the first end of the distraction rod are configured to be inserted at least partially into the axially extending cavity, such that the distraction rod and the monolithic member are in coaxial relation to one another; and
wherein the magnet is axially locked relative to the monolithic member, and the axially locked magnet is capable of rotation.