The present disclosure includes bone screws and assemblies thereof for surgical procedures of the spine including but not limited to posterior spinal fixation procedures.

An external adjustment device for non-invasively adjusting an implant, the external adjustment device including a controller in communication with an actuator associated with the adjustable implant and a sensor configured to receive information from or about the adjustable implant. The external adjustment device may further comprise a power source and a display. According to one exemplary embodiment, the external adjustment device comprises a magnetic element configured to generate a rotating magnetic field; and a driver configured to drive the magnetic element to generate the rotating magnetic field and configured to rotate a permanent magnet of an adjustable implant, wherein upon placing the external adjustment device in proximity to an adjustable implant having a permanent magnet the magnetic element is configured to magnetically couple with the permanent magnet, and wherein the external adjustment device is configured to non-invasively determine one or more of a magnetic coupling state and a stalled state of the magnetic element and the permanent magnet disposed within the adjustable implant.

A method for securing an elongate rod to a bone anchor with a receiver and a threaded plug. The receiver includes a channel configured to receive the elongate rod, and a helically wound receiver guide and advancement structure formed into the interior surfaces of the receiver. The threaded plug is configured for positioning within the channel to secure the elongate rod to the receiver in a locked configuration, with the threaded plug having an outer surface with a mating continuous helically wound guide and advancement structure configured for rotatable engagement with the receiver guide and advancement structure.

In one embodiment, a spinal fixation rod includes a core and an outer layer. The core extends along a central axis from a first end to a second end and has a length from the first end to the second end sufficient to span two or more adjacent vertebral bodies. The core comprises molybdenum rhenium. The outer layer envelops at least a portion of the core and comprises a biocompatible outer layer material other than molybdenum rhenium.

A method is provided for determining the shape of a surgical linking device that is to be attached to a bony body structure such as the spinal column based on digitized locations of a plurality of attachment elements engaged to the bony structure. The method is implemented by a computer system through a GUI to generate an initial bend curve to mate with the plurality of attachment elements. The initial bend curve may be simplified based on user input to the GUI to reduce the number of bends necessary to produce a well-fitting linking device and may be altered to help obtain the goals of surgery.

Connector assemblies, systems, and methods thereof. One or more modular connectors has a first portion that clamps to a first rod in an existing construct and a second portion that clamps to a second rod in a new construct such that the new construct can be extended from the existing construct.

Apparatus and devices for percutaneously extending an existing spinal construct ipsilaterally with an additional spinal construct in a patient are disclosed. The additional spinal construct comprises a rod connector that includes an elongate additional rod integrally attached thereto. The additional rod is placed through an access port in a first orientation generally parallel to the longitudinal axis of the access port and rotated to a different second orientation generally transverse to the longitudinal axis of the access port. During such rotation the additional rod is moved subcutaneously beneath the skin of the patient from the existing spinal rod to an additional bone engaging implant. In another arrangement, the extension of an existing spinal construct in a minimally invasive procedure comprises a rod connector having an offset support for receiving an additional spinal rod that may be placed laterally interiorly or exteriorly of the existing spinal construct.

Connector assemblies, systems, and methods thereof. A connector has a first end that clamps to a first rod in an existing construct and a second end, connected to the first end, that clamps to a second rod in a new construct such that the new construct can be extended from the existing construct at an adjacent level as the existing construct.

A pedicle screw system applicable to affixation medical systems is provided. The system comprises a screw tulip comprising a rod receiving channel configured to receive a spinal rod, a shank configured to anchor the screw tulip and spinal to a pedicle. A bushing disposed between an interior surface of the screw tulip and a first end of the shank, wherein the first side of the bushing channel is defined by a top edge of a first wall of the bushing, a second side of the bushing channel is defined by a top edge of a second wall of the bushing, and the bushing channel is set at an angle defined by the top edge of the first wall and the top edge of the second wall.

The present disclosure provides systems and methods for preparing a spinal rod that enable the digital mapping of rod contours to produce spinal rods that conform to an ideal rod trajectory, which reduces spinal rod to screw head misalignment. Reducing spinal rod to screw head misalignment helps reduce a failure rate of spinal rods in patients. In invasive spinal fusion surgeries, a digital three-dimensional representation may be generated of a flexible rod formed to align with screws installed in the patient. In minimally invasive surgeries, a digital three-dimensional representation may be generated using pointers. A surgeon may adjust the digital three-dimensional representation via a graphical user interface. Bending instructions may be generated from the digital three-dimensional representation that direct how a spinal rod should be bent using a bending tool. The final spinal rod accounts for the anatomical environment around the screws installed in the patient.