Separable arrowhead microneedles.

Separable arrowhead microneedles.
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DOI:
10.1016/j.jconrel.2010.10.033
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发表时间:
2011-02-10
期刊:
Journal of controlled release : official journal of the Controlled Release Society
影响因子:
--
通讯作者:
Prausnitz MR
Prausnitz MR
中科院分区:
其他
文献类型:
--
作者:
Chu LY;Prausnitz MR

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皮下注射针头造成疼痛和出血,产生生物危害性尖锐废物,需要训练有素的人员。为了解决这些问题,我们引入了可分离的箭头微针,可以快速无痛地将药物和疫苗输送到皮肤上。这些针的特点是安装在钝轴上的微米大小的锋利尖端。插入皮肤后,包裹药物的尖端聚合物箭头与其金属轴分离,并保持嵌入皮肤中,以便随后溶解和药物释放。然后可以丢弃钝的金属轴。由于箭头尖端在数秒内与轴快速分离,使用箭头微针的给药可以快速进行,而药物释放动力学可以基于可分离的箭头制剂独立控制。因此,使用箭头微针的药物和疫苗递送被设计为提供快速、方便、安全和潜在的自我给药的药物递送方法,作为皮下注射针的替代。
Hypodermic needles cause pain and bleeding, produce biohazardous sharp waste and require trained personnel. To address these issues, we introduce separable arrowhead microneedles that rapidly and painlessly deliver drugs and vaccines to the skin. These needles are featured by micron-size sharp tips mounted on blunt shafts. Upon insertion in the skin, the sharp-tipped polymer arrowheads encapsulating drug separate from their metal shafts and remain embedded in the skin for subsequent dissolution and drug release. The blunt metal shafts can then be discarded. Due to rapid separation of the arrowhead tips from the shafts within seconds, administration using arrowhead microneedles can be carried out rapidly, while drug release kinetics can be independently controlled based on separable arrowhead formulation. Thus, drug and vaccine delivery using arrowhead microneedles are designed to offer a quick, convenient, safe and potentially self-administered method of drug delivery as an alternative to hypodermic needles.
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