A cannulated intramedullary nail physically coupled to pure magnesium

Abstract

The utility model discloses a kind of hollow intramedullary nail combined with pure magnesium physics, specifically including nail rod and splicing piece, nail rod is titanium alloy nail rod;Splicing piece includes the first release layer, second release layer, third release layer and fourth release layer set gradually, first release layer is magnesium alloy coating, second release layer is low-porosity pure magnesium layer, third release layer is high-porosity pure magnesium layer, fourth release layer is dense pure magnesium layer;Release groove is set on nail rod, release groove is connected with splicing piece, release groove is set in fracture end, for releasing magnesium ion.By being provided with splicing piece on titanium alloy nail rod, splicing piece releases magnesium ion of different concentration in different time period, magnesium ion can stimulate osteoblast differentiation and proliferation, accelerate bone tissue regeneration rate, while guaranteeing the mechanical structure intensity of intramedullary nail, realizes the acceleration fracture healing rate.

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