Iliac screw and spinal fixation device with osteoinductive material coating

Abstract

The invention relates to an iliac screw with a bone induction material coating and a spine fixing device. The iliac screw comprises a screw body and a connector; the screw body comprises a rod portion and a head portion located at one end of the rod portion, at least a part of the surface of the rod portion is provided with an outer thread, and the surface of the outer thread is coated with a bone induction material layer; the connector is used for fixedly connecting the head portion with a spinal rod. According to the iliac screw and the spine fixing device, on one hand, the osteogenesis capacity can be excited by utilizing the bioactivity of a bone induction material to promote bone tissue growing and healing, and close combination can be formed between the screw body and bone tissue to ensure the connection reliability; on the other hand, due to the fact that the iliac screw is coated with the bone induction material, the screw body can be prevented from directly making contact with the bone tissue, and the problems such as infection are prevented from being generated.

Description

technical field [0001] The invention relates to the field of medical surgical instruments, in particular to an iliac nail with an osteoinductive material coating and a spinal fixation device. Background technique [0002] Lumbo-sacral pelvic fixation technology has always been the leader of spinal surgery. Lumbo-sacral pelvic fixation technology has always been a research hotspot and difficulty in the field of spinal surgery, especially how to improve the stability and fusion rate of internal fixation. In the treatment of lumbosacral spine due to tuberculosis, tumor destruction, and senile osteoporosis with degenerative diseases of the spine, most spine surgeons use iliac screw combined with pedicle screw fixation in terms of lesion removal, reduction and internal fixation. Biomechanical studies have shown that the connection technology of iliac screw and lumbosacral pedicle screw has the biomechanical advantage of maintaining the stability of the lumbosacral pelvis. degree...

AI Technical Summary

Problems solved by technology

With this structure of the ilium screw, the screw body is screwed into the ilium, and the biocompatibility between the nail body and the ilium is poor, it is difficult to achieve a tight combination, and it is easy to loosen, which in turn causes pain to the human body, and may cause Infect

[0005] In addition, due to the poor structural strength of the connectors on the existing iliac nails, the connectors may be deformed during the stress process, or the connection with the spinal rod may become loose, thereby affecting the therapeutic effect, and may even resulting in failure of spinal fixation, etc.

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