Growth Adjustable One Way Nails

Abstract

The invention relates to a growth adjustable one-way nail, belongs to the field of medical instrument, and is applied to an orthopedic surgery. The growth adjustable one-way nail is composed of a growing cap ring (1), an inner hexagonal screw plug (2), an elastic pressing block (3) and a growth screw body (4), and is characterized in that the center of the grow cap ring (1) is provided with a through hole, and the right end of the grow cap ring (1) is provided with an opening; threads are placed on the outer surface of the inner hexagonal screw plug (2), a through hole is placed in the center of the inner hexagonal screw plug (2), and the left end of the inner hexagonal screw plug (2) is provided with an inner hexagonal hole; the center of the elastic pressing block (3) is provided with a through hole, the surface of the elastic pressing block (3) is provided with steps, the right end of the elastic pressing block (3) is provided with a through groove, and the left end of the elastic pressing block (3) is provided with a groove and steps; and the growth screw body (4) is provided with taper threads, a U-shaped groove and inner threads. A fixing operation is implemented, a fixing segment is confirmed, embedded depth and directions are ensured, holes are drilled, the screw and a vertebral column stick are embedded, the elastic pressing block (3) is selectively embedded, the vertebral column stick is pre-bended, the screw plug is screwed in and is tightly compressed to a final locking position and to a required state of the operation.

Description

technical field [0001] The invention relates to a growth-adjustable one-way nail, which belongs to the field of medical instruments and is suitable for orthopedic operations. Background technique [0002] Children are different from adults. The biggest difference is that children are always in the process of continuous growth and development before they grow up. Therefore, the treatment of children's diseases must take this into consideration from the beginning to the end. To reduce the impact on children's growth and development, modern spine surgery With the development, the treatment of scoliosis has been extended to three-dimensional space, that is, the treatment of three-dimensional structures in coronal, sagittal and horizontal positions. However, this is still not enough. Children still have a fourth dimension, that is, the growth and development of children. This requires pediatric spine surgeons to not only correct or control the deformity from the three-dimensional...

AI Technical Summary

Problems solved by technology

[0003] Similar to the treatment of scoliosis in adolescents and adults, the treatment of scoliosis in children with greater developmental potential mainly includes observation, brace correction, and surgery. However, the latter surgical treatment has its own particularity. , to correct the progress of the deformity, on the other hand, it is necessary to retain the growth ability of the spine, expand the volume of the chest cavity, and reduce the impact of the deformity of the spine and thoracic cage on the development of important organs such as the heart and lungs. Traditional surgery requires a second operation, and the trauma is large ,costly

[0004] Spinal fusion surgery is not suitable for the surgical treatment of scoliosis in growing children, it will block the growth of the spine, resulting in shortened spine, reduced sitting height, and uncoordinated proportions of the trunk and lower limbs

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