Special posterior chain type external prosthesis artificial lumbar intervertebral disc and implantation method thereof

Abstract

The invention relates to a special posterior chain type external prosthesis artificial lumbar intervertebral disc and an implantation method thereof, and belongs to the field of medical instruments. The product comprises a guide plate and a chain body, the chain body comprises an upper chain and a lower chain, the guide plate is arc-shaped, and the radian is consistent with the vertebra radian; the product comprises an upper chain, the upper chain comprises a plurality of upper chain plates, and inner tooth holes are formed in the heads and the tails of the upper chain plates; the product comprises a lower chain, the lower chain comprises a plurality of lower chain plates, and inner tooth holes are formed in the heads and the tails of the lower chain plates. The lumbar intervertebral discreplacement operation can be carried out from the posterior approach, spinal cord and nerve roots cannot be injured, the shape of the prosthesis can be rapidly shaped after implantation and cannot bedisengaged, and the operation effect is guaranteed.

Description

technical field [0001] The invention relates to an artificial lumbar intervertebral disc and an implantation method thereof, belonging to the field of medical devices. Background technique [0002] Intervertebral fusion surgery is one of the widely used surgical methods for the treatment of spinal degenerative diseases in China. However, a large number of clinical studies have found that after fusion, it will lead to accelerated degeneration of the intervertebral disc in the adjacent segment. Therefore, the non-fusion technique of the spine for the treatment of degenerative spinal lesions has been widely used clinically in recent years as one of the alternatives to traditional fusion. Degenerative spinal disease is a common and frequently-occurring disease in orthopedics, and surgical treatment is one of the main treatment methods in clinic. After spinal surgery, biomechanical reconstruction of the spine is usually required to prevent complications such as spinal instabilit...

AI Technical Summary

Problems solved by technology

However, the problem with the posterior opening is that there are spinal cord and nerve roots in the cone, which block the intervertebral disc. The replacement surgery is extremely difficult, and the spinal cord or nerve roots will be injured if you are not careful, resulting in loss of consciousness or even paralysis of some limbs.

Of course, it is also possible to perform surgery from the anterior approach, but anterior surgery requires an opening in the abdomen between the gastrointestinal tract and other important organs. The surgical opening is large, the operation is difficult, the surgical field of view is poor, and the prosthesis is often not properly installed. General effect

Although there is a replacement operation using a flexible prosthesis implanted from the posterior approach, the shape of the flexible prosthesis is irregular, easy to change, and easy to fall out

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