Pedicle screw positioning device and positioning method thereof

Abstract

The invention discloses a pedicle screw positioning device and a positioning method thereof. The device comprises a spinous process clamp, a connecting rod and two pedicle screw guide pipes, wherein the front end of the spinous process clamp is provided with two opposite clamps, the connecting rod is connected with the spinous process clamp, the two pedicle screw guide pipes are respectively symmetrically arranged at both ends of the connecting rod, and an angular adjustment device is arranged between the both ends of the connecting rod and the two pedicle screw guide pipes. The positioning method at least comprises the following steps: a, adjusting angles of the two pedicle screw guide pipes relative to the connecting rods; b, tightly clamping a spinous process by the spinous process clamp and adjusting an angle of the spinous process clamp relative to a pedicle; and c, respectively inserting pedicle screws into the pedicle screw guide pipes and feeding the pedicle screws under the guide action of the pedicle screw guide pipes. The invention can accurately position the pedicle screws, is more convenient for operative manipulation, lessens hurt to patients and improves the safety and the controllability of operations.

Description

technical field [0001] The invention relates to a pedicle screw positioning device and a positioning method. Background technique [0002] Such as figure 1 As shown, for patients with intervertebral disc herniation, spinal canal stenosis or spinal trauma, it is commonly encountered that two pedicle screws 3 need to be driven into the spine 1. In the traditional clinical operation process, the doctor relies on experience To determine the needle insertion point and angle, the operation is very technical and difficult to master; on the other hand, in the traditional operation process, it is necessary to use C-arm and other equipment to take pictures of patients many times, while C-arm and other equipment cause a certain degree of damage to the patient; again, the success of traditional surgery depends not only on the individual factors of the patient, such as the anatomical structure of the vertebral body, the shape of the vertebral body, and bone density, but also on the expe...

AI Technical Summary

Problems solved by technology

[0002] like figure 1 As shown, for patients with intervertebral disc herniation, spinal canal stenosis or spinal trauma, it is commonly encountered that two pedicle screws 3 need to be driven into the spine 1. In the traditional clinical operation process, the doctor relies on experience To determine the needle insertion point and angle, the operation is very technical and difficult to master; on the other hand, in the traditional operation process, it is necessary to use C-arm and other equipment to take pictures of patients many times, while C-arm and other equipment cause a certain degree of damage to the patient; again, the success of traditional surgery depends not only on the individual factors of the patient, such as the anatomical structure of the vertebral body, the shape of the vertebral body, and bone density, but also on the experience of the operator and the state of the operation, resulting in The safety and controllability of the operation is low

Images