The disclosure provides a spinal implant having spinal anchors comprising a bone anchor and a receiver configured to securely and polyaxially receive the bone anchor. Further, provided herein are methods for using the spinal implant.

A receiver assembly for securing an elongate rod to a bone anchor includes a receiver having pair of upright arms that define an open channel configured to receive the elongate rod, a discontinuous helically wound receiver guide and advancement structure formed into the interior surfaces of the upright arms, and horizontally-elongated tool engaging grooves formed into upper portions of the outer surface of the upright arms. The receiver assembly further includes a closure configured for positioning within the open channel to secure the elongate rod to the receiver in a locked configuration, with the closure having an outer surface with a mating continuous helically wound closure guide and advancement structure configured to resist a tendency toward splaying between the upright arms upon a screwing in of the closure within the open channel by rotatable engagement with the receiver guide and advancement structure.

Systems and methods to monitor and track the treatment of bones using a bone correction system are provided. The method includes implanting growth modulating implants of a bone correction system in two or more bones of a patient. Each growth modulating implant includes an implant body having at least one sensor device embedded in the implant body. The method includes receiving sensor data from the sensor devices and determining an operational status of the growth modulating implants, based on the received sensor data. The method includes determining, by the processor, a longitudinal growth or growth rate between the two or more bones, based on the received sensor data and causing a display device to selectively display a graphical user interface (GUI) representative of at least one of the longitudinal growth and the growth rate of the patient.

A receiving part of a bone anchoring device is provided, where the receiving part includes a first end, a second end opposite to the first end, a central axis extending through the first end and the second end, and a substantially U-shaped-recess adjacent to the first end for receiving a spinal fixation element. The substantially U-shaped recess forms two free legs. The receiving part also includes a bore extending from the first end towards the second end and in communication with the substantially U-shaped recess. A groove is provided in an outer surface of each of the legs, where the groove has a first end and a second end and extends in a circumferential direction in an arcuate shape between the first end of the groove and the second end of the groove. In a plane that includes the central axis and that extends through a center of each leg, a contour of a surface of the groove has at least a first arcuate portion and a second arcuate portion opposing the first arcuate portion, where the contour is substantially free from straight portions.

A spinal fixation device includes an inner housing, an outer housing, a screw, and a pivot inhibitor. The outer housing is circumferentially disposed around at least a portion of the inner housing, wherein the outer and inner housings are translatable relative to one another to cause transitioning of the spinal fixation device between a locked configuration and an unlocked configuration. The screw including a screw head pivotably coupled to a lower portion of the inner housing and a shaft extending from the screw head. The pivot inhibitor is coupled to one of the inner housing or screw, such that pivoting of the inner housing about the screw head is inhibited in a direction of the pivot inhibitor.

Systems, methods, and devices for securing a spinal rod are provided. A clamp assembly comprises a tulip comprising an opening comprising an inner surface, wherein the inner surface is threaded; and a threaded locking cap disposed in the opening, wherein threads of the locking cap and the inner surface include various geometries.

A pivotal bone anchor assembly includes a receiver defining a cavity with an upper expansion region and a lower locking region, and a shank having a partial spherical head that is up-loadable into the cavity through a bottom opening. The assembly also includes a resiliently expandable retainer that is positionable within the upper expansion region with a discontinuous partial spherical internal surface and an inwardly facing surface above the discontinuous partial spherical internal surface, and a compression insert having a lower outwardly facing surface configured for side-to-side engagement with the inwardly facing surface and a downwardly facing partial spherical surface for frictionally engaging the head of the shank. The compression insert is positionable in overlapping engagement with the retainer within the receiver with the discontinuous partial spherical internal surface extending above and below a hemisphere of the head of the shank to capture the head within the retainer.

The present invention relates generally to medical devices and methods generally aimed at spinal surgery. In particular, the disclosed system and associated methods relate to performing spinal fixation with the use of a deformity system.

A spine alignment system is disclosed. The spine alignment system includes a pedicle screw having a longitudinal axis, the pedicle screw having a screw head. The screw head includes a slot having a longitudinal axis that is substantially perpendicular to the longitudinal axis of the pedicle screw. An extension shaft is secured to the pedicle screw, such that a longitudinal axis of the extension shaft is substantially coaxial with the longitudinal axis of the pedicle screw. The spine alignment system also includes a cap having a slot that forms a substantially cylindrical passage with the slot of the pedicle screw head. The substantially cylindrical passage is configured to receive an alignment rod such that alignment of the spine occurs as the rod is translated along the extension shaft to the pedicle screw.

A receiver assembly for securing an elongate rod to a bone anchor includes a receiver having a channel configured to receive the elongate rod and a helically wound receiver guide and advancement structure formed into interior surfaces of the receiver. The receiver assembly further includes a threaded plug configured for positioning within the channel to secure the elongate rod to the receiver in a locked configuration, with the threaded plug having a lower axially protruding portion configured to compress the rod so as to prevent rotational and axial movement between the rod and the receiver in the locked configuration.