Spine fixing rod with gradient design

The invention discloses a spine fixing rod with gradient design, and belongs to the technical field of medical instruments. The gradient design of the fixing rod is carried out by means of material gradient design or structural gradient design, and compared with the existing clinical common rigid titanium alloy fixing rod, the gradient design fixing rod not only ensures the safety and stability of spine fixation, but also can reduce the rigidity of the spine fixing rod, and changes rigid fixation into flexible fixation; the phenomenon of abnormal activity and stress of the adjacent segments caused by rigid fixation is relieved, so that the risk of degeneration of the adjacent segments after operation is relieved, and recovery of spinal functions and improvement of living quality of patients are facilitated. 本发明公开了一种具有梯度设计的脊柱固定棒，属于医疗器械技术领域。通过材料梯度设计或结构梯度设计手段，进行固定棒梯度设计，相比于目前临床常用刚性钛合金固定棒，梯度设计固定棒既保证了脊柱固定的安全稳定，又能降低脊柱固定棒刚度，变刚性固定为柔性固定，缓解刚性固定带来的邻近节段活动度与应力异常现象，从而减轻术后邻近节段退变风险，有利于患者脊柱功能的恢复与生活质量的提高。