Implantable drug delivery systems (IDDS) are long term acting controlled release systems.

植入型给药系统适用于长期给药和靶向给药。

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Liposomes are promising drug targeting and controlled release systems, because of their good safety, biocompatibility and drug loading capability.

脂质体由于具有高度安全性、生物相容性、广泛的载药性等特点，是极具研发前景的靶向、缓释药物载体。

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This requires transport systems that can encapsulate medications and other substances and release them in a controlled fashion at the right moment.

要达此目的，就需要有一种能够包裹各种医疗装备和其他物质并能在适当的时刻、以人为设定的方式把药物释放在适当的地方。

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Ranbaxy, an Indian drug firm, has developed controlled-release systems that allow patients to take only one pill a day instead of several small doses.

ECONOMIST: Schumpeter