Vertebral x-shape resection decompression vertebroplasty intervertebral fusion fixator

Abstract

The invention discloses an intervertebral fusion fixator, which relates to the field of medical devices, and aims to provide an anterior cervical vertebra X-shaped resection and decompression vertebroplasty, which can shorten the crawling replacement distance of bones and reduce the fusion time , a fusion fixator to improve the success rate of bone graft fusion, the technical solution adopted is: vertebral body X-shaped excision decompression vertebroplasty intervertebral fusion fixator, including fusion fixation body and screws, fusion fixation body is provided with three bone grafting cavities , the horizontal section of the first bone graft cavity is fan-shaped, the outer sides of the two radii of the fan shape are respectively the second and the third bone graft cavity, a fixed stopper is set above or below the arc edge of the fan shape, and a through hole is set on the fixed stopper And equipped with the first screw, the first screw is used to implant the regrafted bone block; the fusion fixation body on the corresponding side of the arc edge of the first bone graft cavity is provided with fixing holes, and the fixing holes are respectively set for implanting residual vertebrae on both sides. body, adjacent normal vertebral body screws. The invention is used for X-shaped excision and decompression vertebroplasty of anterior cervical vertebral body.

Description

Technical field [0001] The present invention relates to the field of medical devices, specifically to an orthopedic medicine in intervertebral fusion fixator. Background [0002] Anterior cervical corpectomydecompression and fusion (ACCF) is indicated for patients who do not achieve good spinal decompression due to discectomy alone. In patients with both anterior and posterior compression of the spinal cord, combined posterior spinal canal enlargement may be considered on the basis of ACCF. ACCF is also ideal for patients with vertebral lesions (tumors, etc.), cervical dislocations, and kyphotropic deformities. [0003] Currently, the steps of subtotal spondylosis for cervical spondylosis are: [0004] First, incision, disclosure and positioning. A transverse incision on the right side of the anterior cervical road is used, which has a small scar and a better postoperative appearance, and the length of the incision is generally 3 to 5 cm. Cut the skin and subcutaneous tissue, cut...

AI Technical Summary

Problems solved by technology

There are many deficiencies in ACCF surgery, including: (1) The distance spanned after ACCF resection of the vertebral body is longer, and the bone crawling replacement distance is longer, so the fusion time is longer, the fusion efficiency is lower, and the risk of reoperation and revision is higher

(2) The healing effect of bone grafting is poor and takes a long time, resulting in many patients who have not healed in June and December, and need to wear external fixation braces for a long time, which is not conducive to early rehabilitation and return to normal life and work of patients

(3) At present, titanium mesh is mainly used as implants. The titanium mesh is not fixed, and it is easy to shift into the spinal canal, causing paralysis. In addition, the titanium mesh is relatively sharp and has a small contact area, which is easy to puncture the vertebral endplate. causing the implant to sink

(4) If autogenous ilium, ribs, fibula, etc. are used for support, although the success rate of surgical fusion can be increased, it will increase surgical trauma and bring additional injuries to the patient, and increase the pain, hematoma, and infection of the patient's surgical bone harvesting area. complication

(5) In the existing technical scheme, the excised vertebral body mainly adopts the following two methods: first, grinding and drilling, when the grinding and drilling is grinding away the vertebral body bone, it is washed with water to dissipate heat, and the bone chips are together with the washing liquid It is wasted; secondly, use a rongeur to bite it off and use it as broken bone to fill the titanium mesh. The resected vertebral bone cannot be reused as a bone graft material that can support the vertebral body for secondary use

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