Nail bar correcting support assembly used for scoliosis

Abstract

The invention discloses a nail bar correcting support assembly used for scoliosis, comprising a concave side nail bar correcting support and a convex side nail bar correcting support, wherein the concave side nail bar correcting support and the convex side nail bar correcting support respectively comprise a longitudinal connecting bar, a fixed pedicle screw is fixedly connected to the middle position (top vertebral concave side) of the longitudinal connecting bar of the concave side nail bar correcting support, three fixed pedicle screws are fixedly connected to the middle position (top vertebral convex side and up and down centrum convex side thereof) of the longitudinal connecting bar of the convex side nail bar correcting support, and more than one sliding pedicle screw is connected tothe positions, close to two ends, of the longitudinal connecting bars of the concave side nail bar correcting support and the convex side nail bar correcting support. The nail bar correcting support assembly is simple in structure, good in correction effect, capable of maintaining the correction effect and retaining spinal growth, small in minimally invasive operation wound, and capable of reducing the rate of complications such as spontaneous fusion and infection.

Description

technical field [0001] The invention relates to the technical field of orthopedic surgery medical instruments, in particular to a screw-rod correction bracket assembly for scoliosis. Background technique [0002] Scoliosis refers to the scoliosis and rotational deformity of the spine. It is divided into infantile type (0-3 years old), juvenile type (4-10 years old), and adolescent type (over 10 years old). It seriously affects the health and mental health. Adolescent patients with severe scoliosis can undergo orthopedic fusion surgery, which has relatively little impact on their spine development and cardiopulmonary development. With the growth of age, the development of childhood to adolescence is very serious spinal deformity, the operation is difficult, the trauma is large, and there are many complications. Children's spinal deformity is soft and easy to correct. For young children with scoliosis, orthopedic fusion surgery significantly affects the development of the c...

AI Technical Summary

Problems solved by technology

The clinical efficacy of spinal fusion technology in the treatment of scoliosis in mature populations is satisfactory, but in the treatment of scoliosis in growing children, there will be many problems and failures. "Phenomenon

In addition, premature fusion results in short upper body and affects the development of heart and lung functions, which is also unacceptable

The double-rod growing rod technology, which is still being promoted and applied in China, was once considered a good method, but its shortcomings have been reported at home and abroad in recent years: (1) Repeated operations are required (every 6 months on average); (2) Rod breakage Decoupling (or pulling out of the upper screw); (3) kyphotic deformity after the upper junction; (4) distraction failure; (5) complications such as spontaneous fusion are common; (6) higher infection rate, etc.

(3) The existing corrective devices at home and abroad cannot provide sufficient corrective stress on the top vertebra of the scoliosis

Its advantage is that it can avoid repeated surgical trauma to children, but it also has all the disadvantages of double-rod growth rods. It also cannot correct the lateral curvature immediately, and it is prone to nails and rods being pulled out, upper screws pulled out, unable to hold, Problems such as kyphosis at the proximal junction

[0004] To sum up, the current non-fusion techniques for scoliosis at home and abroad have the following four problems: (1) The asymmetric growth of the scoliotic spine cannot be controlled, and the scoliosis of sick children cannot be corrected immediately during surgery

(2) Pedicle screw “bolt” phenomenon exists on the concave side after operation, and the vertebral body cannot grow and extend freely along the direction of the correction rod, and the correction cannot be maintained without loss or loss during the entire growth and development period of the child, or even Let the scoliosis shape, further self-correction, need to do fusion surgery again after maturity

(3) The two ends of the growth rod are only fixed on the pedicle screws of the upper and lower vertebrae of scoliosis in the body, and the top vertebra and its adjacent upper and lower vertebrae are not fixed with pedicle screws. The effect of the lateral thrust to the concave side exerted by the apical vertebra and the compression and fixation on the convex side of the apical vertebra inhibit the growth of the endplate

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