Selective pedicle screw and methods of use thereof

Abstract

The invention discloses a selective pedicle screw and an application method thereof. The selective pedicle screw comprises a screw rod and an upper mounting head, an inner through hole is formed in the screw rod, a tip is arranged at the lower end of the screw rod, a depth indication mark is arranged on the outer wall of the screw rod, the upper mounting head is arranged on the upper portion of the screw rod, side fixing holes are formed in the two sides of the upper mounting head, a lower fixing hole is formed in the center of the lower end of the upper mounting head, an internal thread groove is formed in the upper end of the upper mounting head, an auxiliary fixing sleeve is arranged in the internal thread groove, an external thread groove is formed in the outer wall of the auxiliary fixing sleeve, and a regular polygon prism short shaft is arranged in the middle of the auxiliary fixing sleeve. The selective pedicle screw has the beneficial effects that the selective pedicle screw is made of titanium alloy, is high in strength, can directly grow together with the spine by directly injecting medicine into the selective pedicle screw after being internally fixed in the body, avoids the influence of repeated disassembly on a patient, is convenient to use, is provided with depth indication marks, and is convenient for timely knowing the insertion depth during an operation, so that accurate positioning is realized, and the operation is convenient.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a selective pedicle screw and its application method. Background technique [0002] Adolescent idiopathic scoliosis refers to structural scoliotic deformities that develop during adolescence or before skeletal maturity, without other organic diseases. Adolescent idiopathic scoliosis is one of the common musculoskeletal deformities in adolescents. Due to the characteristics of adolescent sound field development, how to correct scoliotic deformity to the greatest extent, rebuild spinal balance, retain more motion segments, reduce spinal degeneration, improve quality of life, and reduce complications without affecting the normal growth and development of the spine is still a challenge. is to solve the problem. At present, the treatment of juvenile idiopathic scoliosis is mainly to correct the spine by fixing pedicle screws in the spine. The Chinese patent with the application nu...

AI Technical Summary

Problems solved by technology

Most of the pedicle screws in the above-mentioned patents are solid, and they need to be removed after the spine recovers after surgery, causing great damage to the patient, and during the operation, because the length of the screw that has penetrated into the spine cannot be clearly known, it is easy to cause the screw to penetrate The spine, or the position is deviated and inserted into other parts, causing secondary damage to the body

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