Individualized lumbar pedicle screw placement guiding device

Abstract

The invention discloses an individualized lumbar pedicle screw placement guiding device. The individualized lumbar pedicle screw placement guiding device is composed of a guiding hole, a holding rod and a connecting body. The guiding hole is of a hollow tubular structure with the axis consistent with the pedicle axis; the holding rod is a stabilizing structure during a surgical operation and can perform fine adjustment on the position of the pedicle guiding device on the lumbar vertebra; and the connecting body is a structure with the surface capable of being attached to a vertebra plate and a transverse process surface, and a posterior longitudinal ligament complexus structure is avoided. The individualized lumbar pedicle screw placement guiding device is used for accurate place-in of a pedicle screw, the posterior longitudinal ligament complexus structure is reserved, and the device is convenient and easy to use.

Description

technical field [0001] The invention relates to the technical field of novel medical auxiliary equipment, in particular to an individualized lumbar pedicle screw placement guide device. Background technique [0002] Pedicle screws have superior three-dimensional orthopedic and short-segment fixation biomechanical properties, making this technology widely used in the surgical treatment of lumbar spondylolisthesis, spinal degenerative diseases, spinal stenosis, vertebral bone and other spinal diseases. At present, the commonly used nail placement methods mainly include: anatomical landmark method, X-ray fluoroscopy method, computer-aided navigation method and so on. The accuracy of nail placement by the anatomical marker point method mainly depends on the operator's personal experience and hand feeling, and the operation is difficult and risky. X-ray fluoroscopy requires frequent operations and a large amount of radiation, which has a certain impact on the health of the opera...

AI Technical Summary

Problems solved by technology

However, the fitting surface of the customized pedicle guide plate includes the spinous process, which destroys the structure of the posterior ligament complex (supraspinous ligament and interspinous ligament). In addition, the fitting area of ​​the guide plate is relatively large, which increases the area of ​​soft tissue stripped during surgery , which increases the operation time and affects the accuracy of positioning

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