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HARD-TISSUE IMPLANT COMPRISING A SHAFT, A SURFACE, PILLARS FOR CONTACTING A HARD TISSUE, SLOTS TO BE OCCUPIED BY THE HARD TISSUE, AND A THREAD DISPOSED HELICALLY ALONG THE SHAFT
HARD-TISSUE IMPLANT COMPRISING A SHAFT, A SURFACE, PILLARS FOR CONTACTING A HARD TISSUE, SLOTS TO BE OCCUPIED BY THE HARD TISSUE, AND A THREAD DISPOSED HELICALLY ALONG THE SHAFT
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机译:硬组织植入物,包括轴,表面,用于接触硬组织的柱子,由硬组织占据的槽,以及沿着轴螺旋设置的螺纹
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摘要
A hard-tissue implant is provided. The implant includes a shaft, a surface of the shaft, pillars for contacting a hard tissue, slots to be occupied by the hard tissue, and a thread disposed helically along the shaft, extending radially from the shaft, and having a plurality of grooves oriented transversely with respect to the thread that define a series of thread segments and thread gaps along the thread. The implant has a Young's modulus of elasticity of at least 3 GPa and a ratio of (i) the sum of the volumes of the slots and the thread gaps to (ii) the sum of the volumes of the pillars and the thread segments and the volumes of the slots and the thread gaps of 0.40:1 to 0.90:1. Also provided is a method of use of the implant for fusion of two or more bones in an individual in need thereof.
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