Pedicle screw fixation device and system for thoracolumbar spine posterior orthopedics
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A pedicle screw and fixing device technology, applied in the field of medical devices, can solve the problems of large surgical trauma, heavy bleeding and high surgical costs
Pending Publication Date: 2019-07-12
晏怡果
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At this time, it is necessary to remove the growth rod system that has been maintained in the patient for a long time, and at the same time, put the ordinary fixat
Method used
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Embodiment 1
[0038] like Figure 1 to Figure 4 As shown, the pedicle screw fixation device for thoracolumbar posterior orthopedics provided by the embodiment of the present invention includes: pedicle screw 100, limiting member 200 and locking member 300;
[0039] Wherein, the pedicle screw 100 includes a screw head 110 and a screw body 120; the screw head 110 is provided with a chute 111 for placing a connecting rod, and the screw body 120 is connected to the screw head 110;
[0040] The limiter 200 is movably connected with the chute 111, and can move along the axial direction of the chute 111, and the limiter 200 is provided with an installation channel 210 axially through;
[0041]The locking member 300 is movably connected with the installation channel 210, and the locking member 300 can move along the axial direction of the installation channel 210, so as to apply pressure or release pressure on the connecting rod.
[0042] The pedicle screw fixation device for posterior thoracolumb...
Embodiment 2
[0060] like figure 1 and figure 2 As shown, the embodiment of the present invention provides a fixation system, including a connecting rod 400 and at least two pedicle screw fixation devices for posterior thoracolumbar spine correction in the first embodiment above;
[0061] The connecting rod 400 is installed in the chute 111 of the pedicle screw fixation device for posterior thoracolumbar orthopedics, and the connecting rod is located between the locking member 300 and the groove bottom of the chute 111 .
[0062] Preferably, the above-mentioned connecting rod 400 is a titanium rod.
[0063] It should be noted that, for the specific structure of the above-mentioned pedicle screw fixation device for posterior thoracolumbar orthopedics, please refer to the description of the first embodiment, therefore, details will not be repeated in the second embodiment.
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Abstract
The invention provides a pedicle screw fixation device and system for thoracolumbar spine posterior orthopedics, and relates to the technical field of medical instruments. The pedicle screw fixation device for the thoracolumbar spine posterior orthopedics comprises a pedicle screw, a limiting piece and a locking piece; the pedicle screw comprises a screw head part and a screw body part which are connected with each other; the screw head part is provided with a sliding groove for placing a connecting rod; the limiting piece is movably connected with the sliding groove, can move in the axial direction of the sliding groove and is internally provided with a mounting channel which is axially through; the locking piece is movably connected with the mounting channel and can move in the axial direction of the mounting channel. According to the pedicle screw fixation device for the thoracolumbar spine posterior orthopedics, an existing sliding groove screw growth rod system is improved, through a mode that the limiting piece cooperates with the locking piece, the situation that by means of the existing sliding groove screw system, an incision operation is needed again in the final operation, an original implant is replaced, and the pain and financial burden of patients are greatly reduced.
Description
technical field [0001] The invention relates to the technical field of medical appliances, in particular to a pedicle screw fixation device and a fixation system for posterior thoracolumbar orthopedics. Background technique [0002] Early-onset scoliosis (EOS) refers to scoliosis in children under 10 years old, covering a variety of etiologies, including congenital, neurofibromatous, neuromuscular, and idiopathic and other syndromes associated with scoliosis. Since the onset age of EOS is earlier, and the development of the lungs is not completed until about 8 years old, the thoracic deformity caused by scoliosis is not conducive to the maturation of the lungs, so EOS is often accompanied by pulmonary dysfunction. At the same time, EOS has the characteristics of heavy deformity and rapid progression. Children not only have short stature and deformity, but also have a high early mortality rate, which brings great difficulties to treatment and a serious burden on society and ...
Claims
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