Degradable polymer materials need good compatibility throughout the degradation process, mainly including the following:
Does not cause persistent inflammation or toxic reaction after implantation in human body;
Appropriate degradation cycle;
In the degradation process, having mechanical properties corresponding to the function of treatment or tissue regeneration;
The degradation products are non-toxic and can be excreted by metabolism or infiltration;
Machinability. There are many factors affecting the biocompatibility of degradable polymer materials. Some properties of the material itself, such as the shape and structure of the implant, hydrophilic and lipophilicity, water absorption, surface energy, molecular weight and degradation mechanism, need to be considered.