Abstract: The present disclosure provides a device and method for measuring or distracting an intervertebral distance of an intervertebral space between a first vertebral body and a second vertebral body. The device includes a displacement unit having first and second engagement members. Displacement of the engagement members is caused by actuating an actuator on the device. In response to actuation, a force transfer carrier drives the displacement between the engagement members. The force transfer carrier is connected to the engagement members by a plurality of linkages. The distance between the engagement members is indicated by a gauge having an indicator rotatable about a pivot point. The distance between the engagement members varies in a nonlinear relationship to the movement of the force transfer carrier.

Abstract: A spinal fusion system comprising an interbody device includes a leading end, trailing end, and opposed bone contacting sides extending therebetween. The trailing end defines a threaded opening that extends toward the leading end. The system also includes a bone plate that includes inner and outer surfaces and defines a first bone screw opening and connection screw opening extending therethrough. The system further includes a connection screw that includes a head and a threaded shaft. The head is positioned within the connection screw opening of the bone plate and is rotatably connected thereto such that the connection screw is rotatable about a longitudinal axis thereof but is prohibited from translational movement relative to the bone plate. The threaded shaft extends from the connection screw opening and is configured for threaded engagement with the threaded opening of interbody device.

Abstract: The present disclosure provides a device and method for measuring or distracting an intervertebral distance of an intervertebral space between a first vertebral body and a second vertebral body. The device includes a displacement unit having first and second engagement members. Displacement of the engagement members is caused by actuating an actuator on the device. In response to actuation, a force transfer carrier drives the displacement between the engagement members. The force transfer carrier is connected to the engagement members by a plurality of linkages. The distance between the engagement members is indicated by a gauge having an indicator rotatable about a pivot point. The distance between the engagement members varies in a nonlinear relationship to the movement of the force transfer carrier.