An Elastic Distraction Spinal Growth Rod System

Abstract

The invention discloses an elastic expansion spine growth rod system. The system comprises an orthopedic rod, a clip, a spring and a spring sleeve; the orthopedic rod is a round rod, the clip comprises a snap ring and a locking screw, the snap ring sleeves the orthopedic rod, the snap ring is provided with a screw hole, and the locking screw runs through the screw hole to be in locked connection with the orthopedic rod; the spring sleeves the orthopedic rod between the end of the orthopedic rod and the clip, and the spring is sleeved with the spring sleeve; the spring sleeve is a square tube.The elastic expansion spine growth rod system can not only prevent scoliosis from being aggravated, but also can continuously exert an expansion effect along with the growth of the spine of a child patient, the structure is simple, the use is convenient, the manufacturing cost is low, the operation frequency is greatly reduced, the bending expansion force is larger, and the corrective effect on patients with large curvature of the scoliosis is better.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a system for elastically expanding spinal growth rods. Background technique [0002] The spine of a normal person should be straight when viewed from the back, and the sides of the trunk should be symmetrical. If the shoulders are not equal in height from the front or the back is uneven from the back, "scoliosis" should be suspected. It is a three-dimensional deformity of the spine, including coronal, sagittal, and axial sequence abnormalities. Mild scoliosis usually causes no significant discomfort, and no obvious physical deformity can be seen in appearance. Severe scoliosis will affect the growth and development of infants and adolescents, deforming the body. In severe cases, it can affect the heart and lung function, and even involve the spinal cord, resulting in paralysis. [0003] Scoliosis can be caused by different reasons, the most common is idiopathic scolios...

AI Technical Summary

Problems solved by technology

[0007] Therefore, people have invented various spinal non-fusion techniques, mainly including: growth rod technology that can slide along with the growth of the spine. There are many such products, but the clinical application has proved that the effect is uncertain. The longitudinal expandable artificial titanium rib technology ( Vertical Expandable Prosthetic Titanium Rib (VEPTR) has passed FDA certification and is commercialized, but its narrow indications and many complications limit its clinical application, and magnetically controlled growing rod technology (magnetically controlled growing rod MCGR) has also passed FDA certification And marketed, but its impact on postoperative MRI evaluation, prone to device-related failures and metal debris has caused great controversy. At present, it is more recognized and effective based on the first introduction by Dr. Harrington in the United States in 1962, and it was introduced by Dr. Harrington in 1962. Dr. Moe then improved the traditional growth rod technology, but this growth rod technology needs regular lengthening surgery on children every 6-9 months to maintain synchronous growth with the spine to obtain correction and stability, repeated many times The surgery caused a huge burden on the child's physiology, psychology, and the family's economy. In addition, repeated operations will promote the spontaneous fusion of the posterior spine and the spontaneous fusion of the costovertebral joints, increasing the stiffness of the scoliosis After two or three years, most cases cannot continue

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