| abstract |
The present invention relates to a kind of available iron based alloy holders, it includes ferrous alloy matrix and the degradable polymer that is contacted with the matrix surface, the weight average molecular weight of the degradable polymer is [2,100] between ten thousand, and polydispersity coefficient is (1.0,50] between, the degradable polymer rear degradation in the ferrous alloy stenter to implant body generates carboxyl.After the biodegradable stent is implanted into human body, corroded with oxygen uptake based on, mechanical support can played the role of in early days and gradually degraded, and not will produce the amounts of hydrogen for being enough to cause aeroembolism risk in degradation process. |