一种用于腰椎侧方固定的骨水泥灌注锁定钉板系统

By using a bone cement-filled locking plate system, combined with a locking plate and bone cement-filled screws, the problem of insufficient anchoring force in lateral lumbar fixation for osteoporosis patients is solved, achieving a highly stable and safe lumbar fixation effect.

CN122398433APending Publication Date: 2026-07-17YUNNAN QUJING CENTRAL HOSPITAL (QUJING FIRST PEOPLES HOSPITAL)

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YUNNAN QUJING CENTRAL HOSPITAL (QUJING FIRST PEOPLES HOSPITAL)
Filing Date
2026-04-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional lumbar lateral fixation systems have insufficient anchoring force in patients with osteoporosis or osteopenia, which can easily lead to screw loosening, cutting, and internal fixation failure, affecting surgical outcomes and safety.

Method used

A bone cement injection locking screw-plate system is designed. By combining a locking steel plate with bone cement injection screws, an angularly stable screw-plate system is formed. Bone cement diffuses into the trabecular bone gaps through the hollow cavity of the screw and the lateral injection holes, forming a composite structure that enhances the contact area and mechanical anchoring points between the screw and bone tissue.

Benefits of technology

It provides highly stable lumbar lateral fixation, preventing screw loosening and internal fixation failure, improving surgical safety and long-term efficacy, and is especially suitable for patients with osteoporosis.

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Abstract

本发明涉及一种用于腰椎侧方固定的骨水泥灌注锁定钉板系统,属于骨科医疗器械技术领域。该系统包括:锁定钢板,设有至少两个锁定孔;骨水泥灌注螺钉,包括螺钉杆部和螺钉头部。螺钉杆部具有轴向贯通的中空内腔,近端设有灌注接口,侧壁开设有至少两个侧向灌注孔。螺钉头部设有与锁定孔匹配的锁定部,实现角稳定固定。本发明通过将骨水泥灌注螺钉与锁定钢板结合,骨水泥经中空内腔及侧向灌注孔弥散至骨小梁间隙,固化后形成“螺钉—骨水泥—骨”复合结构,大幅增强螺钉在骨质疏松椎体内的锚固力,有效防止螺钉松动、切割及内固定失效,为腰椎侧方入路椎间融合术提供高稳定性固定,提高了手术安全性和远期疗效。
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