A polyaxial offset lateral connector includes a body, an insert, and a connecting shaft. The body has a base that defines a receptacle and walls that extend from the base to define a saddle. The insert includes a cup and a pin that extends from a bottom surface of the cup. The connecting shaft has a connection portion and a neck extending from the connecting shaft to a ball. The ball is received within the receptacle of the body and defines a pin passage therethrough. The pin is the insert is received within the pin passage of the ball to prevent translation of the connecting shaft relative to the body.

A spinal rod extension system includes a rod portion and a connector portion connected to the rod portion. The connector portion is configured for insertion through a screw head of an existing pedicle screw that is used to secure an existing spinal rod. The spinal rod extension system also includes a screw head connector configured to mount to the screw head of the existing pedicle screw to secure the connector portion to the existing spinal rod. The screw head connector includes a first end wall and a second end wall that are connected to one another by a pair of cross connectors.

The invention discloses a bionic artificial spinal joint, wherein the spinal joint includes a plurality of fixing units, the fixing units are fixed on a vertebral body, at least two fixing units located on one side of a spine are arranged along the extension direction of the spine and fixed in sequence, and sufficient force can be borne between two adjacent fixing units. The overall micro-motion joint structure formed by two adjacent fixing units is both supportable and bendable. The present application imitates the function of the human inter-process joints, so that the spine equipped with the bionic artificial spine joint can be bent within a certain angle range while maintaining the height of the intervertebral space, thereby avoiding the problem of spinal rigidity after the traditional spine surgery pedicle internal fixation.

A customized posterior atlantoaxial reduction fixator with screws and rods, including two supporting-screws, two pulling-screws, two variable cross section fixing rods, a bracing beam, two lock nuts and two pressing rod nuts. Each of the supporting-screws includes a first head and a first body, and each of the pulling-screws includes a second head and a second body; tips of both the first body and the second body are provided with a tapered thread; both the first head and the second head are provided with nail grooves inside, with U-shaped grooves on the sides; each of the a plurality of nail grooves is provided with an internal thread inside; the second head is provided with a long arm nail groove, with an annular recess configured on the middle part of an outer wall.

There is provided a pedicle screw assembly for dynamic and static fixation, which is able to be assembled during the operation and allows a doctor to make an emergency choice between fusion fixation and non-fusion fixation. The pedicle screw assembly is used for inner fixation in spine surgery. During the operation, a pedicle screw is firstly implanted in a pedicle, and then a spherical head of the pedicle screw is enclosed by a connecting claw. After a screw seat is connected to the connecting claw by means of threads, a connecting rod is inserted in a groove and finally a locking screw is tightened to complete the fixation.

A pivotal bone screw assembly includes a receiver having a base defining a lower portion of a central bore, and an upper portion extending upward from the base to define a channel configured to receive an elongate rod. The upper portion further includes a guide and advancement structure proximate a top end configured for engagement with a closure top, and side outer surfaces with tool engagement grooves extending horizontally and circumferentially to the front and back faces of the receiver. The assembly further includes a shank having a head and an anchor portion configured for attachment to the bone, with the head being positionable into the central bore of the receiver with the shank extending downward through the lower opening. The lower opening is configured to provide for increased pivotal movement of the shank with respect to the receiver in at least one direction.

Systems and methods of treating spinal deformity, including one or more intervertebral implants to be introduced laterally into respective intervertebral spaces, a plurality of bone screws introduced generally laterally into vertebral bodies adjacent to the intervertebral implants and/or the intervertebral implants themselves, and a cable dimensioned to be coupled to the bone screws and manipulated to adjust and/or correct the spinal deformity.

An improved dynamic longitudinal connecting member includes a rod portion joined with a tensioned cord portion, for use in a medical implant assembly having at least two bone attachment structures, a spacer covering the join of the rod and cord portions and extending between the at least two bone attachment structures, a sleeve, a bumper and a cord blocker. The spacer and bumper are compressed. The cord portion is slidable with respect to at least one of the bone attachment members.

Spinal stabilization implant assemblies, as well as systems, instruments and methods are provided for implanting and stabilizing adjacent vertebra in connection with a surgical procedure, particularly a spinal surgery. The implant assemblies and instruments enable controlled spinal rod insertion and reduction, and controlled rotation or de-rotation of adjacent spinal bones for optimized compression to achieve enhanced sagittal balance in a treated spine.

A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in an integral receiver, the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. A down-loadable compression insert, a down-loadable friction fit split retaining ring having inner and outer tangs and an up-loadable shank upper portion cooperate to provide for pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. The shank and receiver once assembled cannot be disassembled.