Novel lumbar annulus fibrosus repairing device

Abstract

The invention discloses a novel lumbar annulus fibrosus repairing device. The novel lumbar annulus fibrosus repairing device comprises a lumbar annulus fibrosus repairing patch, a patch placer, patchfixing screws and a fixing screw placer; the transverse diameter of the patch is 18-26 mm, the height of the patch is 8-14mm, and the thickness of a material is 2mm; the lumbar annulus fibrosus repairing patch is placed in the patch placer and is fixed with the screws, fixing pointsare located at the center of the lumbar annulus fibrosus repairing patch, the patch placer adopts a hollow metal guiding rod, the length of thehollow metal guiding rod is greater than or equal to 250mm, and the diameter of thehollow metal guiding rod is less than or equal to 3.5mm; the patch placer is internally provided with micro gears, a guiding rod and a metal connecting wire, the micro gears are installed in the metal guiding rod through the metal connecting wire, the head end of the guiding rod meshes withthe micro gears, and a dimension adjusting rotary knob is connected to the micro gears; and each patch fixing screw is composed of a nut and a front thread, and the fixing screw placer adopts a hollow metal guiding rod. The novel lumbar annulus fibrosus repairing device has the advantages of scientific structure, economy, convenient use, precise repair and the like.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a novel lumbar annulus repair device. Background technique [0002] Lumbar intervertebral disc herniation is a common and frequently-occurring disease in orthopedics. Studies have found that the lumbar intervertebral disc tissue has degenerated since the age of 18. All doctors may be troubled by lumbar intervertebral disc herniation. Currently, lumbar disc herniation with symptoms of low back and leg pain However, the recurrence of lumbar disc herniation after surgical treatment is still an unsolved problem. Choi et al reviewed 10,228 patients who underwent PELD with a recurrence rate of 0.8%. The literature reports that the recurrence rate of PELD is between 0% and 7.4%, and that of open surgery is 1% -21%. Incomplete removal of the herniated nucleus pulposus and rupture of the annulus fibrosus are the main causes of recurrence. In order to reduce the recurrence rate, it is...

AI Technical Summary

Problems solved by technology

However, lumbar disc herniation is a disease in which the structure and properties of the fibrous annulus are changed due to intervertebral disc degeneration, and then the herniation of the nucleus pulposus causes lumbago and leg pain symptoms. It is enough, but its effect on preventing the recurrence of intervertebral disc is still uncertain, and the selection of the suture position during the operation depends on the experience of the surgeon, and it is required to limit the position of the posterior intervertebral space of the vertebral body, and then perform the suture at the position of the incision. Suture, if the suture position is poorly selected, a good repair effect cannot be achieved, which is difficult to complete under the limited field of view during the operation, and there is great uncertainty

Moreover, none of these methods currently have devices for repairing under foraminal endoscopy. For young patients with lumbar disc herniation who need endoscopic intervertebral surgery, suture cannot be performed. If suture is required, endoscopic or open surgery is required. This increases patient trauma and delays patient recovery

At present, most literatures believe that there is not much difference between repairing and not repairing, and it increases the economic burden of patients, which may be related to the above reasons

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