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发明公开
CN107137135A 一种组合式骨科螺钉 无效 - 驳回

一种组合式骨科螺钉
摘要：
本发明公开了一种组合式骨科螺钉,包括用于旋入皮质骨的第一螺杆和用于旋入松质骨的第二螺杆；所述第一螺杆的螺纹内径大于或等于所述第二螺杆的螺纹外径；所述第一螺杆和所述第二螺杆同向设置且首尾连接。本发明的组合式骨科螺钉包括第一螺杆和第二螺杆，其中，第一螺杆的螺纹规格与现有的皮质骨螺钉的螺纹规格相同，第二螺杆的螺纹规格与现有的松质骨螺钉的螺纹规格相同。使用时，第一螺杆和第二螺杆分别旋入皮质骨和松质骨，再将第一螺杆和第二螺杆连接，大大提高了该组合式骨科螺钉的抗拔出能力。
摘要（英）：

The invention discloses a combined orthopedics screw. The combined orthopedics screw comprises a first threaded rod for being screwed in a cortical bone and a second threaded rod for being screwed in a cancellous bone; the inner thread diameter of the first threaded rod is larger than or equal to the outer thread diameter of the second threaded rod; the first threaded rod and the second threaded rod are arranged in the same direction and connected in a head-to-tail mode. The combined orthopedics screw comprises the first threaded rod and the second threaded rod, wherein the thread specification of the first threaded rod and the thread specification of an existing cortical-bone screw are same, and the thread specification of the second threaded rod and the thread specification of an existing cancellous-bone screw are same. When the combined orthopedics screw is used, the first threaded rod and the second threaded rod are screwed in the cortical bone and the cancellous bone respectively, then the first threaded rod and the second threaded rod are connected, and the anti-pulling-out capacity of the combined orthopedics screw is greatly improved.

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