A connector capable of free retraction of orthopedic rods and with angle compensation function

Abstract

The invention discloses a connector enabling orthopedic bar to freely stretch and retract and having an angle compensation function. The connector comprises a connector body, a universal ball and locking screws. The connector body is provided with orthopedic bar penetrating holes, locking holes matched with the locking screws are formed perpendicular to the orthopedic bar penetrating holes, an extending part is arranged on one side wall of the connector body and provided with a spherical hole, a universal ball is installed in the spherical hole, the spherical hole and the universal ball are matched rotationally, and the universal ball is provided with an orthopedic bar penetrating hole and parallel to the orthopedic bar penetrating holes in the connector body. After two orthopedic bars are connected through the connector, the problem that long bars are different to connect after penetrating is solved, and the two bars can freely and longitudinally move relative to each other. A malformed spine can be induced to longitudinally and freely grow while spine malformation is properly controlled, the two bars can swing relative to each other in a certain angle range through the arrangement of the universal ball, constrains to left and right moving of the spine are reduced, and the flexibility of the spine is improved.

Description

technical field [0001] The technical field of medical equipment of the present invention relates to a connector capable of free expansion and contraction of an orthopedic rod and having an angle compensation function. Background technique [0002] Spinal deformity refers to the deviation of one or several segments of the spine from the midline of the spine, usually accompanied by rotation of the vertebral bodies and increased or decreased kyphosis or protrusion on the sagittal plane. It is a three-dimensional spinal deformity with an incidence of about 0.5-2% in adolescents and can be caused by various diseases. When the angle of scoliosis is too large, or shows a clear trend of progress, surgical treatment needs to be considered; otherwise, it will gradually develop into a severe and rigid spinal deformity, which will seriously affect the heart and respiratory function of the child, and affect the spinal cord function leading to paralysis. Even life-threatening. The main ...

AI Technical Summary

Problems solved by technology

[0007] After using this connector to connect two orthopedic rods, it solves the difficult problem of inserting a long rod through the rod and connecting them. It can make the 1# orthopedic rod move freely longitudinally relative to the 2# orthopedic rod, and properly control the spinal deformity at the same time. , the deformed spine is induced to grow freely longitudinally, avoiding the restriction on the growth of the spine, and avoiding the threat of repeated distraction and lengthening operations and spinal cord stretching to the spinal cord function. The setting of the universal ball can make the 1# orthopedic rod relative to The 2# orthopedic rod swings within a certain angle, which reduces the constraint on the left and right movement of the spine and increases the flexibility of the spine, thus significantly reducing the risk of spontaneous fusion caused by the fixation of one end of the spine

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