Keywords Time-controlled pulsatile drug delivery system;Terbutaline;Salbutamol;Ibuprofen;Nifidipine;Osmotic pump;Diffusion;Swelling;Pharmacodynamics;

• 定时脉冲给药系统;硫酸特布他林;硫酸沙丁胺醇;布洛芬;硝苯地平;渗透泵;扩散;膨胀;药动学;