可植入的磁激活囊用于按需交付.
Ying Zheng1, Guizhou Zheng1, Yuan Yuan Li1
1Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China.
概括
这项研究介绍了一种微型,无电池的可植入磁激活囊,用于按需药物输送. 该系统提供精确,可重复的剂量和导航,克服了当前植入式药物输送系统的局限性.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 药物输送系统 药物输送系统
背景情况:
- 目前的植入式药物输送系统 (IDDS) 面临的挑战包括大尺寸,复杂的电子设备,不可预测的释放和更换电池手术的需要.
- 现有系统往往缺乏按需控制,并且需要侵入性维护程序.
研究的目的:
- 开发一种无带,无电池的可植入磁激活囊 (IMAC),用于按需和强大的药物输送.
- 在一个相关的体内模型中证明IMAC的精确药物释放,导航和生物相容性的能力.
主要方法:
- 设计了一种IMAC,利用一个可复位磁力机制来触发药物释放.
- 采用外部磁场用于IMAC导航,定和胃肠道内的激活.
- 在糖尿病大鼠15天内评估IMAC性能,将胰岛素输送与皮下注射进行比较.
主要成果:
- 该IMAC证明了精确和可重复的药物输送 (每次启动9.9±0.17μg) 具有高的抗磁能力 (临界触发场~90mT).
- 通过梯度磁场,在损伤部位成功导航和定.
- 在体内研究表明,IMAC胰岛素输送产生了与皮下注射相比的药理动力学和药理动力学概况.
- IMAC是生物相容的,微型 (6.3 × 12.3 mm3),轻量级 (0.8 g),可充电,并且没有电池.
结论:
- 开发的IMAC提供了一个有前途的,以患者为中心的替代方案,用于精确的,按需的植入式药物输送.
- 它的无带,无电池设计克服了当前IDDS的显著局限性,减少了患者的负担.
- 该系统的强大性能和生物相容性支持其在各种治疗应用中的潜力.
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