Longitudinal fine-tuning and compression device of anterior thoracolumbar spine plate

Abstract

The invention discloses a vertical fine-adjustment and pressurization device for a thoracolumbar spine anterior plate. The vertical fine-adjustment and pressurization device is characterized in that the lower end face of the thoracolumbar spine anterior plate is matched with the thoracolumbar spine in physiological curvature, the left side and the right side of the thoracolumbar spine anterior plate are respectively provided with a bar-shaped hole, the wall of each bar-shaped hole is provided with inner teeth, front ends of bone screws are inserted into the bar-shaped holes of the thoracolumbar spine anterior plate, the rear ends of the bone screws are connected with fastening nuts, and the rear end of each bone screw is provided with a gear engaged with the inner teeth on the wall of the bar-shaped hole. When in use, the two bone screws are knocked into two adjacent vertebral bodies, then the two bone screws are sleeved by the thoracolumbar spine anterior plate, and then are connected with the fastening nuts, the thoracolumbar spine anterior plate is pressed on the thoracolumbar spine of the patient, then the two bone screws are finely adjusted through the gears and the inner teeth vertically, the bone screws can be well positioned, the bone screws lift the vertebral bodies, the height of the intervertebral disc and the intervertebral foramen of the patient can be recovered, the stability of the thoracolumbar spine can be ensured, and the vertical fine-adjustment and pressurization device for the thoracolumbar spine anterior plate is advantaged by being simple to operate, convenient to install, safe and reliable to use, good in treatment effect and the like.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anterior plate longitudinal fine-tuning and pressurization device for treating human thoracolumbar diseases. Background technique [0002] The first user of the anterior thoracolumbar approach was Hodgson. At that time, it was mainly used for drainage of tuberculosis abscess. In 1954, it was also used for anterior fusion of scoliosis. In 1953, Wenger first used the anterior approach to fix scoliosis. The fixation method was to connect a group of steel wires or threaded rods with screws on the side of the vertebral body. In the development of anterior fixation devices and surgical methods, the work of scholars such as Dwyer, Newton, Hall and Zielke is also very prominent. With regard to thoracolumbar fractures, Bohlman was the first to use anterior surgery. At that time, it was mainly performed for patients with late spinal canal compression; with the successful applic...

AI Technical Summary

Problems solved by technology

Studies have shown that no matter what kind of posterior transpedicular internal fixation is used to treat thoracolumbar fractures, long-term correction loss after surgery is a difficult complication to prevent

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