Spinal Minimally Invasive Prying and Restoration External Fixator

Abstract

An external fixing device for minimally invasive spine leverage reduction comprises a main screw rod (1), leverage percutaneous pedicle screws (2) and leverage devices, wherein the leverage devices comprise connecting pieces (3), pushing sheets (4), fixing screws (5) and leverage screws (6). The left end of the main screw rod (1) is movably arranged in a main screw rod hole (31) of the left leverage device and is located through a nut (11), the right end of the main screw rod (1) is fixedly arranged in a main screw rod hole (31) of the right leverage device, and the left leverage device and the right leverage device are identical in structure and are opposite in direction. The leverage percutaneous pedicle screws (2) are arranged in leverage percutaneous pedicle screw holes (33) of the leverage devices through anti-abrasive cannulas (22). According to the external fixing device for the minimally invasive spine leverage reduction, reduction of thoracic waist fractures can be achieved through leverage opening by operating outside the body, skin soft tissue does not need to be cut open, a patient can be off the bed in one to three days after the external fixing device for the minimally invasive spine leverage reduction is relieved, the patient can recover to a movement state before the injury in a short period of time, and the external fixing device for the minimally invasive spine leverage reduction is especially suitable for 60-100-year-old thoracic waist fracture patients.

Description

technical field [0001] The invention relates to an orthopedic surgical instrument, in particular to an external fixator for minimally invasive prying and restoration of the spine. Background technique [0002] At present, the following methods are generally used for the treatment of thoracolumbar fractures at home and abroad: [0003] 1. Orthopedic internal fixation of the fracture with traditional open surgery pedicle screws and longitudinal rods. The disadvantages of this treatment method are large trauma, heavy bleeding, and susceptibility to infection. One year later, the patient needs to be hospitalized for a second internal fixation removal. It is suitable for patients with good physique (20-60 years old). [0004] 2. The treatment of spinal external fixation orthopedics. The characteristics of this treatment method are small trauma, less bleeding, and less infection. After three months, after the fracture has healed, there is no need to be hospitalized again. You ca...

AI Technical Summary

Problems solved by technology

The disadvantages of this treatment method are large trauma, heavy bleeding, and susceptibility to infection. One year later, you will need to be hospitalized for a second internal fixation removal. It is suitable for patients with good physique (20-60 years old).

The disadvantage is that it is troublesome to nurse during the three-month external fixation orthopedic period, especially for patients in the south, who cannot take a bath because of the hot weather (multi-segment spinal rehabilitation external fixator CN200620052179.6, thoracolumbar spine external fixator CN200520051825.2 )

However, for elderly patients with thoracolumbar fractures, osteoporosis, poor physical fitness, and many complications (60-100 years old), the above methods are not suitable.

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