Implantable drug delivery systems (IDDS) are long-term acting controlled release systems,administered subcutaneously through surgically implantation or injection via a syringe.

• 体内植入型药物释放系统为一类经手术植入体内或皮下,或经穿刺导入皮下的控制释药制剂,适用于靶向给药或长期给药。