High-precision three-dimensional fixed-point directional auxiliary device for vertebral pedicle puncture

Abstract

The invention discloses a pedicle puncture high-precision three-dimensional fixed point orientation auxiliary device which comprises a base, a fixed point device and an orientation device, the base is a rectangular frame body, the front side and the rear side of the base are both provided with transverse sliding grooves which are completely through, and a sliding block of the fixed point device and a transverse sliding block of the orientation device are installed on the two transverse sliding grooves in a sliding mode; a plurality of longitudinal sliding rods are fixedly connected between the two transverse sliding blocks, longitudinal sliding blocks are installed on the longitudinal sliding rods in a sliding mode, vertical sliding rails are fixedly connected to the upper surfaces of the longitudinal sliding blocks, through vertical sliding grooves are formed in the vertical sliding rails, the vertical sliding blocks are installed in the vertical sliding grooves in a sliding mode, and directional pipes are hinged to the vertical sliding blocks. The point fixing device is used for determining a puncture point, the distance in the transverse direction, the longitudinal direction and the vertical direction is fixed through the orienting device, the puncture angle is determined through the orienting pipe, the device is reasonable in structure, easy to operate and low in requirement for an operator, the spine puncture accuracy can be improved, the operation time is shortened, X-ray radiation is reduced, and pain of a patient is relieved.

Description

technical field [0001] The invention belongs to the technical field of medical auxiliary devices, in particular to a high-precision three-dimensional fixed-point orientation auxiliary device for pedicle puncture. Background technique [0002] The pedicle is a part of the vertebral arch. It starts from the posterior upper part of the vertebral body, is short and thick, and protrudes backward perpendicular to the direction of the vertebral body. The root is an integral part of the intervertebral foramen, with a shallow notch above it forming the lower wall of the intervertebral foramen, and a deep inferior notch below the pedicle forming the upper wall of the intervertebral foramen. [0003] Intervertebral endoscopy and minimally invasive percutaneous pedicle screw internal fixation are two minimally invasive surgical methods for the treatment of thoracolumbar diseases. They have the advantages of small surgical trauma, fast recovery and low cost. They have been widely used in...

AI Technical Summary

Problems solved by technology

At present, manual puncture is mostly used clinically. The quality of the operation depends heavily on the doctor's clinical experience and performance during the operation. The confirmation of the screw entry point depends on the different anatomical marks of the pedicle entry point of different vertebral bodies, and depends on the doctor's hand. Touch the heart and determine the repeated X-ray fluoroscopy during the operation. Too much fluoroscopy is a kind of harm to the patient or the doctor; the determination of the inclination depends on the doctor's visual inspection during the operation. In the process of puncturing through hard bone, the vertebral body moves, and the inclination angle is often too large or too small

Due to the limited diameter of the pedicle, if the first puncture position is not ideal, it will be more difficult to adjust and change the screw track during the operation. Even if the diversion is successful, the holding force of the bone on the screw will be reduced, which will increase the screw loosening and displacement after surgery. and risk of surgical failure

If the puncture is inaccurate, the screw entry point is inward, or the inclination angle is too large, the pedicle screw may enter the spinal canal and damage the dural sac and nerves, resulting in serious complications.

The standardization of screw placement cannot be achieved by manual operation. There will be differences in the entry point and inclination angle of the pedicle screws in different vertebral bodies, which will cause differences in the position of the tail end of the screw, that is, the tail end of the pedicle screw on the same side Not in a straight line, the above differences can significantly increase the difficulty of rod placement between screws in long-segment fixation

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