Endoscope lower thoracic vertebra body expander

Abstract

The invention discloses an endoscope lower thoracic vertebra body expander. The outer side of a middle shaft (5) is sleeved with a spiral sleeve (3). A movable sleeve (1) is arranged at the lower end of the spiral sleeve (3). Lugs (8) are arranged on the two sides of the movable sleeve (1) and provided with twisting shafts (9), and supporting arms (10) are arranged on the twisting shafts (9). Compared with the prior art, the expander can be placed in the chest through a minimally-invasive opening, the supporting arms are used for expanding a thoracic vertebra body fixing screw, operation is performed on the outer side of the chest through an operation handle, the problem that no proper expanders exist in endoscopic surgery for treating thoracic vertebra injuries is effectively solved, operation of the surgery is simplified, trauma of the surgery is reduced, surgery time and length of hospital stay of patients are shortened, and the endoscope lower thoracic vertebra body expander is suitable for treating thoracic vertebra injuries and lumbar vertebra injuries and is an ideal restoration assorted instrument special for minimally-invasive treatment of thoracolumbar injuries.

Description

technical field [0001] The invention belongs to the field of medical equipment, in particular to a laparoscopic vertebral body spreader for orthopedics. Background technique [0002] Thoracolumbar fractures are common vertebral fractures. The traditional operation is to fix the fracture site with pedicle screws. Pedicle screws are widely used because of their advantages of three-column fixation. The previous surgery was open surgery. Excessive trauma, heavy bleeding, and long hospital stay increase the patient's pain and financial burden. With the development of minimally invasive surgical techniques, various minimally invasive techniques are also used in the operation of thoracolumbar fractures. Minimally invasive surgery is used by patients with less trauma, less bleeding, less pain, and faster recovery. It is being used more and more widely. Chinese invention patent ZL201220319584.5 discloses a "minimally invasive thoracolumbar fracture reducer". Left and right pliers, a...

AI Technical Summary

Problems solved by technology

[0002] Thoracolumbar fractures are common vertebral fractures. The traditional operation is to fix the fracture site with pedicle screws. Pedicle screws are widely used because of their advantages of three-column fixation. The previous surgery was open surgery. Excessive trauma, heavy bleeding, and long hospital stay increase the patient's pain and financial burden. With the development of minimally invasive surgical techniques, various minimally invasive techniques are also used in the operation of thoracolumbar fractures. Minimally invasive surgery is used by patients with less trauma, less bleeding, less pain, and faster recovery. It is being used more and more widely. Chinese invention patent ZL201220319584.5 discloses a "minimally invasive thoracolumbar fracture reducer". Left and right pliers, adjusting nut, adjusting screw, column pin, movable pin, and left and right pliers handles, can quickly perform fractured vertebral body expansion and reduction through the minimally invasive incision channel, reducing the pain of patients, but this "minimally invasive thoracic The lumbar fracture reducer is only suitable for vertebral distraction in posterior minimally invasive surgery of the spine, and is not suitable for endoscopic anterior minimally invasive surgery for thoracolumbar injuries. Drill holes in the front to place fixing screws and spreaders. This kind of spreader cannot be placed in the thoracic cavity through the endoscopic channel for operation. Chinese invention patent ZL201420299361.6 also discloses "a vertebral body spreader". The support arm extends into the through groove of the static support arm, and the bottom of the dynamic support arm is provided with evenly arranged driving teeth, and a helical piece is inserted in the driving tooth, and the helical piece is installed on the rotating shaft, and the rotating shaft is installed on the support frame of the static supporting arm. The patient's vertebral body is distracted, but this kind of distractor cannot be operated in the endoscopic minimally invasive channel, which also brings great problems to the endoscopic minimally invasive surgery for thoracolumbar injuries

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