An external fixator for correcting scoliosis

Abstract

An external fixation rack for correcting scoliosis comprises a head ring bow 1, top clamp screws 2, adjusting screw rods 3, connecting pins 4, long connecting rods 5, iliac spine screws 6, a transverse connecting rod 7, connecting pieces 8 and fastening screws 9, wherein loop bars 11 are arranged at the lower ends of two side rods of the head ring bow 1; the top clamp screws 2 are mounted on the two side rods; the right ends of the adjusting screw rods 3 are mounted in the loop bars 11 through adjusting screw nuts 33; the left ends of the adjusting screw rods 3 are connected with the lower ends of the connecting pins 4 and fixed through fastening screws 9; the upper ends of the connecting pins 4 are connected with the left ends of the long connecting rods 5; the tail parts of the right ends of the long connecting rods 5 are curved segments; the iliac spine screws 6 are mounted on the curved segments of the long connecting rods 5 at an angle of 45-50 degrees through connecting pieces 8 and fastening screws 9; and the two ends of the transverse connecting rod 7 are respectively connected with the left and right long connecting rods 5 through connecting pieces 8 and fastening screws 9. The external fixation rack for correcting scoliosis adopts a uniplanar two column structure, has the characteristics of simple structure, convenience in mounting and adjusting and the like, allows a patient to lie in a bed without any limitation and influence, can effectively avoid needle passage infection and is very convenient for medical care.

Description

technical field [0001] The invention relates to a medical device for correcting scoliosis, in particular to an external fixator for correcting scoliosis. Background technique [0002] Most of the existing fixation frames for correcting scoliosis use the Halo-pelvic frame with a four-column biplane steel structure to gradually correct and externally fix the contracted tendons, ligaments, and small joints of the scoliosis. Release and correction of spinal tendons, ligaments and facet joints to achieve the purpose of correcting external fixation. However, due to the steel structure of Halo-pelvic frame metal external fixation, it increases the risk of excessive stretching of the spinal cord and nerves during the traction process, causing damage to the spinal cord, blood vessels, etc., resulting in tractive spinal cord ischemia, etc. Complications, because of its complex structure, installation and adjustment inconvenience, the patient's bed rest is limited, especially the doct...

AI Technical Summary

Problems solved by technology

However, due to the steel structure of Halo-pelvic frame metal external fixation, it increases the risk of excessive stretching of the spinal cord and nerves during the traction process, causing damage to the spinal cord, blood vessels, etc., resulting in tractive spinal cord ischemia, etc. The emergence of complications, and because of its complex structure, inconvenient installation and adjustment, the patient's bed rest is limited, especially the doctor's care is difficult, often prone to needle tract infection

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