Multi-segment series connection type external spinal fixation support

Abstract

The invention discloses a multi-segment series connection type external spinal fixation support. The multi-segment series connection type external spinal fixation support comprises a percutaneous double-thread pedicle screw, a working sleeve, screw connectors and embedded type horizontal and vertical rod locking screws. A pedicle screw body is arranged inside the percutaneous double-thread pedicle screw, pedicle screw double threads are arranged on one side of the pedicle screw body, and a screw easy-breaking self-disconnecting groove is formed in one side of the pedicle screw body. By means of a fixed / pry-adjustable kit design, different kits can be adopted according to the specific condition of bone fracture segments of a patient, so as to achieve long-stage thoracolumbar vertebral fracture centrum pry-reduction and distraction fixation, traditional long-stage open surgery is avoided, and surgery pain and economic burden can be relieved for patients. By the adoption of an embedded type locking screw structure, the number of external components is reduced greatly, scratching of clean dressing and clothes of patients by the tail ends of the locking screws can be avoided during postoperative rehabilitation, an aseptic environment can be built easily, and the possibility of complications like needle passage infection can be reduced.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a multi-segment serial spinal external fixation bracket. Background technique [0002] Thoracic and lumbar fractures are currently a frequently-occurring disease in clinical practice, and the principle of surgical treatment is to restore the height of the vertebral body and the biomechanical stability of the spine, while at the same time minimizing trauma, restoring function, and improving the quality of life of patients are also important considerations in the treatment of spinal fractures. Stablize. At present, most of the treatment methods for thoracolumbar fractures with unstable spine are surgical reduction and internal fixation. However, the traditional open surgery method has many complications such as large trauma, heavy bleeding, short-segment pedicle screw internal fixation system is easily loosened and broken due to stress shielding, and postoperative correc...

AI Technical Summary

Problems solved by technology

However, the traditional open surgery method has many complications such as large trauma, heavy bleeding, short-segment pedicle screw internal fixation system is easily loosened and broken due to stress shielding, and postoperative correction is easily lost.

In addition, the accelerated degeneration of adjacent segments also affects the long-term efficacy

[0003] Therefore, since the clinical application of spinal external fixation in 1977, it has been welcomed by the majority of clinicians, but the traditional external fixator has disadvantages such as complex structure, cumbersome operation, and difficult postoperative care.

It hinders its clinical application. Although it has been improved many times by domestic and foreign scholars, it still cannot meet the clinical needs.

At present, our research team has developed a new type of spinal external fixator and applied it clinically. However, the fixation bracket is only suitable for the surgical treatment of single-segment thoracolumbar fractures, and there are still insufficient surgical treatments for multi-segment thoracolumbar fractures.

Images