Novel interspinous process fixing device

Abstract

The invention relates to a novel interspinous process fixing device. The novel interspinous process fixing device comprises an interspinous process fixator and a conveying device, wherein the interspinous process fixator comprises a flexible and foldable bag (100) and a filling material (200), the near end of the bag is provided with an injection hole (110), the conveying device comprises a conveying pipe (310), the injection hole (110) is in detachable connection with the far end of the conveying pipe (310), the filling material (200) is injected thorough the conveying pipe (310) and the injection hole (110) so as to spread the bag to form the interspinous process fixator, the part, positioned between two spinous processes, of the interspinous process fixator forms a support section, and the parts, positioned on the two sides of the spinous processes, of the interspinous process fixator protrude out, so that the movement of the interspinous process fixator between two spinous processes is limited. According to the novel interspinous process fixing device, through a minimally invasive method, the novel interspinous process fixing device is released after being conveyed between the spinous processes, then the filling material is injected, so that the fixation of the spinous processes is realized, and therefore, the micro-traumatic intervention treatment is realized, and the trauma to the patient is small.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a novel interspinous process fixation system. Background technique [0002] Lumbar instability is a common clinical disease, and its early changes are often only due to the internal structure disorder of the intervertebral disc or degenerative discogenic low back pain; as the disease progresses, vertebral bone hyperplasia, facet joint degeneration and jaundice will appear. Ligament hypertrophy, etc., which in turn lead to spinal instability and lumbar spinal stenosis, mechanical lumbar pain and lumbar spinal stenosis. Surgery is often required when conservative treatment fails. The traditional surgical method is fusion, but studies have shown that long-term clinical follow-up is not very ideal. The main reason is that fixation and fusion destroy the biomechanical properties of the lumbar segment, resulting in load transmission that does not conform to the original physiologic...

AI Technical Summary

Problems solved by technology

[0005] However, whether it is X-stop, Wallis, Coflex or DIAM, the surgical methods mentioned in the relevant clinical literature are all implanted through open surgery, which is complicated and greatly increases the risk and pain of the patient.

In addition, although some interspinous process fixers such as In-space and Superion can be implanted in a minimally invasive way, the incision is still more than 2cm

[0006] In addition, fixers made of metal materials, such as X-stop, are much stronger than spinous processes, which can easily cause stress shielding, resulting in complications such as spinous process rupture

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