A locator for lumbosacral percutaneous pedicle screw placement

Abstract

The invention discloses a positioning device for lumbosacral percutaneous pedicle screw insertion, which is used for determining pedicle puncture points according to patient imaging data, three-dimensionally adjusting puncture paths, and realizing multiple pedicle positioning at one time. It consists of a rectangular frame connected by two long and two short bars with guide grooves, each long or short bar can translate along the guide grooves on its adjacent two short or long bars, with The adjustment rod of the guide groove is installed on the strip and can move laterally along the guide groove on the strip, and can also move longitudinally along its own guide groove. Large-angle plate, the arc-shaped guide groove is provided with a slider to connect the small-angle plate with arc-shaped guide groove, the small-angle plate can rotate along the arc-shaped guide groove of the large-angle plate, the arc of the small-angle plate The guide groove is provided with a slide block for connecting the guide tube, the guide tube can rotate along the arc-shaped guide groove of the small-angle disc, and the guide tube is used for introducing the puncture screw.

Description

technical field [0001] The invention relates to a medical device, in particular to a positioning device for lumbosacral percutaneous pedicle screw placement. Background technique [0002] The technique of percutaneous external pedicle fixation began in 1977. External spinal fixation (ESSF) was applied to patients with spinal fractures and achieved good clinical results. In recent years, especially with the development of minimally invasive spinal surgery, percutaneous pedicle screw technology has become the basic technical means of minimally invasive spine surgery (MMISS, minimally invasive spine surgery), and has been gradually applied to the treatment of spinal fractures and spondylolisthesis. Osteoporosis, percutaneous vertebroplasty and kyphoplasty, lumbar instability, diagnosis or treatment of discogenic diseases. However, the traditional percutaneous puncture and pedicle screw placement have many limitations and disadvantages. For example, the operation often requires...

AI Technical Summary

Problems solved by technology

However, the traditional percutaneous puncture and pedicle screw placement have many limitations and disadvantages. For example, the operation often requires repeated C-arm fluoroscopy guidance or correction to be successfully completed, which increases the burden on the operator and the patient. The amount of x-ray exposure and the prolongation of the operation time make it difficult to guarantee the accuracy of the operation

At present, with the help of computer-aided virtual X-ray navigation technology, CT scan navigation, and ultrasound scan navigation, the insertion of percutaneous pedicle screws can be completed smoothly, and the puncture accuracy is high, but the required equipment is expensive. , The cost is quite high, it is difficult to popularize and apply clinically

At present, scholars at home and abroad have developed a variety of percutaneous pedicle positioning aids for percutaneous pedicle screw placement and positioning, but there are many disadvantages such as complex structure, complicated operation, large positioning deviation, high invasiveness and high price. The truly ideal positioning equipment has not yet been reported

Images