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    • 10. 发明授权
    • Aerodynamically light particles for pulmonary drug delivery
    • 用于肺部药物递送的空气动力学轻微颗粒
    • US06635283B2
    • 2003-10-21
    • US10027212
    • 2001-12-20
    • David A. EdwardsGiovanni CaponettiJeffrey S. HrkachNoah LotanJustin HanesAbdellaziz Ben-JebriaRobert S. Langer
    • David A. EdwardsGiovanni CaponettiJeffrey S. HrkachNoah LotanJustin HanesAbdellaziz Ben-JebriaRobert S. Langer
    • A61K914
    • A61K9/0075A61K9/1647A61K31/137
    • Improved aerodynamically light particles for drug delivery to the pulmonary system, and methods for their synthesis and administration are provided. In a preferred embodiment, the aerodynamically light particles are made of biodegradable material and have a tap density of less than 0.4 g/cm3 and a mass mean diameter between 5 &mgr;m and 30 &mgr;m. The particles may be formed of biodegradable materials such as biodegradable polymers. For example, the particles may be formed of a functionalized polyester graft copolymer consisting of a linear &agr;-hydroxy-acid polyester backbone having at least one amino acid group incorporated therein and at least one poly(amino acid) side chain extending from an amino acid group in the polyester backbone. In one embodiment, aerodynamically light particles having a large mean diameter, for example greater than 5 &mgr;m, can be used for enhanced delivery of a therapeutic agent to the alveolar region of the lung. The aerodynamically light particles incorporating a therapeutic agent may be effectively aerosolized for administration to the respiratory tract to permit systemic or local delivery of wide variety of therapeutic agents.
    • 提供用于向肺系统输送药物的空气动力学轻微颗粒,以及用于其合成和给药的方法。 在优选的实施方案中,空气动力学轻微颗粒由可生物降解的材料制成,并且振实密度小于0.4g / cm 3,质量平均直径在5μm和30μm之间。 颗粒可以由可生物降解的材料如可生物降解的聚合物形成。 例如,颗粒可以由官能化聚酯接枝共聚物形成,该聚酯接枝共聚物由具有至少一个氨基酸基团的直链α-羟基酸聚酯主链和至少一个从氨基酸延伸的聚(氨基酸)侧链组成 集团在聚酯骨干。 在一个实施方案中,具有大平均直径(例如大于5μm)的空气动力学轻微颗粒可用于增强治疗剂递送至肺的肺泡区域。 掺入治疗剂的空气动力学轻微颗粒可以被有效地雾化,用于给予呼吸道以允许全身或局部递送多种治疗剂。