Adjustable interface type supporting and fixing fusion device achieving zero incisure of anterior thoracolumbar spine
A fusion device, thoracic and lumbar spine technology, used in spinal implants and other directions, can solve problems such as damage to the periosteum, inability to spread, and difficulty in bone growth, achieving less impact on the thorax and breathing, easy insertion and removal, and reduction of pneumothorax. effect that occurs
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Embodiment 1
[0032] Such as figure 1 As shown, the adjustable thoracolumbar anterior zero-tangential interface type support and fixation fusion device disclosed by the present invention includes a connecting sleeve 2, a fusion component 1, a gripper 9 and a rotator 15, and one end of the connecting sleeve 2 has a left-handed internal thread , the other end of the connecting sleeve 2 has a right-handed internal thread, and the left-handed internal thread and the right-handed internal thread are bounded by the center of the connecting sleeve 2. There are two fusion parts 1, one end of one fusion part 1 has an external thread that matches the left-handed internal thread, and one end of the other fusion part 1 has an external thread that cooperates with the right-handed internal thread, and the fusion part 1 includes an axially connected fusion The external thread is arranged on the connecting part, the axial dimension of the fusion part is 2 mm, the outer end surface of the fusion part is a m...
Embodiment 2
[0039] Such as Figure 4 , 5 As shown, the difference between this embodiment and Embodiment 1 is that there is a radially extending fixing portion 8 on the outer end surface of the fusion component 1, and the fixing portion 8 has a threaded hole 11 that cooperates with the fastening screw 10, and the fixing portion 8 has a Two parallel threaded holes B11. The threaded hole B11 is inclined towards the direction of the vertebral body. The nut of the fastening screw 10 is also threaded, and is provided with a shrapnel to prevent the screw from being withdrawn. The thread on the upper body is also fastened with the thread of the threaded hole B11, so that the entire fusion device can be more firmly connected to the vertebral body, effectively preventing displacement.
[0040] Traditional titanium cages cannot be adjusted and cannot be stretched, requiring additional instrumentation (such as plate fixation), and the bilateral bone must grow up to 6 cm before it can heal; and the...
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