A minimally invasive distraction pressurizer

Abstract

The invention discloses a minimally invasive distraction pressurizer which comprises a first distraction pressurization arm, a second distraction pressurization arm, a first connector, a second connector and a supporting stick. The first connector and the second connector are connected to the supporting stick, and the distance between the first connector and the second connector can be adjusted along the supporting stick. The first distraction pressurization arm is detachably hinged to the first connector. The second distraction pressurization arm is detachably hinged to the second connector. The hinged axes of the first distraction pressurization arm and the second distraction pressurization arm are perpendicular to the same plane parallel to the supporting stick. One end of the first distraction pressurization arm and one end of the second distraction pressurization arm are each provided with a clamping groove used for clamping a longitudinal connection stick. The minimally invasive distraction pressurizer further comprises a progressive force application mechanism used for tensioning or distracting the first and second distraction pressurization arms. The minimally invasive distraction pressurizer can be operated flexibly, easily, conveniently and rapidly, has the powerful and effective distraction or pressurization effect, can achieve gradual distraction or pressurization at different times, and can achieve or even exceed the open operation effect.

Description

technical field [0001] The invention relates to the field of medical instruments for orthopedic surgery, in particular to a minimally invasive distraction press. Background technique [0002] Posterior spinal pedicle screw and rod internal fixation is a very mature spinal surgery, which has been widely used clinically. At present, the traditional method is to use a posterior incision. This method requires extensive stripping of the paravertebral tissue structure, which is likely to cause paravertebral muscle damage, ischemia, denervation, muscle necrosis, scar formation, and low back pain, stiffness, etc. sequelae, and the operation has a large trauma, a lot of bleeding, and a long hospital stay, which increases the pain and economic burden of the patient. [0003] In recent years, the percutaneous minimally invasive pedicle screw internal fixation technology has been applied clinically. It has less trauma, less bleeding, faster recovery, shorter hospital stay, and has achi...

AI Technical Summary

Problems solved by technology

However, the current clinical application of percutaneous pedicle screw-rod system does not have a strong and effective distraction and compression device. Thoracic and lumbar fracture surgery, due to the lack of strong and effective propulsion and reduction equipment, the reduction effect is not good. Although the operation can be completed minimally invasively, it cannot achieve the effect of open surgery

Other similar devices are basically used for in situ fixation of the spine, but the effect on the reduction of thoracolumbar fractures is still not good, and the effect of open surgery is not achieved, which limits the development of minimally invasive surgery for thoracolumbar fractures

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