A distractor for intervertebral implant implantation

Abstract

The invention discloses a distracter for intervertebral implant implantation. The distracter includes an adjustment rod and two anchoring parts for being fixed on a pedicle screw. The two anchoring parts are arranged in the length direction of the adjustment rod and located below the side of the adjustment rod, a distracting arm is arranged between each anchoring part and the adjustment rod, the lower end of each distracting arm is connected with the corresponding anchoring part, the upper end of each distracting arm is bent towards one side where the adjustment rod is located, and connected with the adjustment rod. The adjustment rod is provided with an adjusting mechanism for adjusting the distance between the two distracting arms. The distracter has the advantages of having conveniencein use, being capable of performing distraction effectively, being good in operation stability and safety and reducing posterial spinal operation difficulty.

Description

technical field [0001] The invention relates to a surgical instrument, in particular to a spreader for intervertebral plant implantation, which is mainly used for establishing implantation channels when implanting intervertebral plants such as titanium meshes, bone blocks and intervertebral fusion devices. Background technique [0002] When spinal destructive diseases such as spinal infection, spinal tuberculosis or spinal tumors involve the vertebral body, irregular destruction of the vertebral body can often occur, and even abscess cavity can be formed, and abscess drainage can affect multiple vertebral bodies. Due to the high proportion of cancellous bone in the anterior column and middle column of the vertebral body and rich blood supply, the damage is more serious, and it is easy to form a large cavity or cause the collapse of the vertebral body, while the posterior column of the vertebral body is less involved and the bone quality is denser , From the side view of the ...

AI Technical Summary

Problems solved by technology

Such operations are very laborious and risky, and the slightest carelessness can cause spinal cord injury and paralyze the patient

Moreover, the implanted channel established only by the nerve root retractor not only has limited space, but is also very unstable. If the operator is a little slack, it is easy to decouple, not only the channel is re-occluded, but also easily causes new damage.

It can be seen that there are huge potential safety hazards in traditional devices, which need to be improved urgently

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