Angle opening restoration bolt of thoracolumbar vertebral fracture posterior minimally-invasive nail rod fixing external skin restoration system
A technology of thoracolumbar spine and angle, which is applied in the field of angle-opening and repositioning plug of the external reduction system with minimally invasive nail rod fixation for thoracolumbar fractures, can solve the problems such as the difficulty of closed thoracolumbar Highly effective in trauma and recovery
Inactive Publication Date: 2016-06-15
邓宇
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Problems solved by technology
However, obtaining and maintaining closed reduction of the thoracolumbar spine is quite difficult
There are relevant internal fixation devices on the market now, but there is still room for improvement
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[0021] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, a minimally invasive screw-rod fixation system for thoracolumbar vertebral fractures with an angled distraction reset bolt, which is characterized in that the front and back button sleeve (1) and the square frame (2) form an angled distraction reset bolt, Antiskid screws (3) are provided on the side of the square frame, and threaded rods (4) are provided at the other two ends, and the thread directions of one group of threaded rods are opposite. The dimensions of each of the above components are: the side length of the square frame at one end of the reset bolt is 1-26mm, the length of the threaded rod is 1-20mm, the thread direction is opposite, and the connecting angle between the threaded rod and the square frame is 0-20 degrees; the angle of the reset bolt is stretched In addition, the middle is designed as a square frame, and the two sides are connected to the thr...
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An angle opening restoration bolt of a thoracolumbar vertebral fracture posterior minimally-invasive nail rod fixing external skin restoration system is characterized by being composed of a positive and negative buckling sleeve (1) and a square frame (2); an anti-skid screw (3) is arranged on one side edge of the square frame (2), a set of threaded rods (4) are arranged at the two ends of the side edge of the square frame, and the directions of threads of the threaded rods (4) are opposite.According to the dimension of the components, the side length of the square frame at one end of the angle opening restoration bolt ranges from 1 mm to 26 mm, the length of the threaded rods ranges from 1 mm to 20 mm, the directions of the threads are opposite, and angle connecting angles of the threaded rods and the square frame range from 0 degree to 20 degrees; the middle of the angle opening restoration bolt is additionally designed into a square frame edge, and the two sides of the square frame edge are connected with the threaded rods in an angularity mode; the length of the positive and negative buckling sleeve ranges from 30 mm to 50 mm, the directions of the threads of the two ends of the inner side are opposite, the positive and negative buckling sleeve is matched with the threaded rods of the angle opening restoration bolt, and the outer face of the positive and negative buckling sleeve is arranged to be hexagonal.
Description
technical field [0001] The present invention is applied to clinical orthopedics, and is a minimally invasive nail-rod fixation extracutaneous reduction system for posterior thoracolumbar fracture, which belongs to medical equipment. It is an internal fixation device for closed reduction and internal fixation of fractures with complete but unstable posterior longitudinal ligaments of the human thoracic and lumbar vertebrae. The application of the device not only helps to reduce the operation trauma, but also helps to reduce the operation and hospitalization time. Background technique [0002] The treatment of thoracolumbar fractures is developing and changing. Roy-Camille et al. began to use pedicle screws and plates for internal fixation of thoracolumbar fractures in 1961. After half a century of clinical application and multi-center research and analysis, it is believed that pedicle screws are effective in treating thoracolumbar fractures. Posterior internal fixation dev...
Claims
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IPC IPC(8): A61B17/70A61B17/88
CPCA61B17/7002A61B17/00234A61B17/7074A61B17/885A61B2017/564
Inventor 邓宇官建中吴敏胡廷军周玉宽
Owner 邓宇