An implantable MEMS micropump system for drug delivery in small animals.

An implantable MEMS micropump system for drug delivery in small animals.
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DOI:
10.1007/s10544-011-9625-4
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发表时间:
2012-06
影响因子:
2.8
通讯作者:
Meng, Ellis
Meng, Ellis
中科院分区:
工程技术3区
文献类型:
--
作者:
Gensler, Heidi;Sheybani, Roya;Li, Po-Ying;Lo Mann, Ronalee;Meng, Ellis

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We present the first implantable drug delivery system for controlled dosing, timing, and location in small animals. Current implantable drug delivery devices do not provide control over these factors or are not feasible for implantation in research animals as small as mice. Our system utilizes an integrated electrolysis micropump, is refillable, has an inert drug reservoir for broad drug compatibility, and is capable of adjustment to the delivery regimen while implanted. Electrochemical impedance spectroscopy (EIS) was used for characterization of electrodes on glass substrate and a flexible Parylene substrate. Benchtop testing of the electrolysis actuator resulted in flow rates from 1 to 34 μL/min on glass substrate and up to 6.8 μL/min on Parylene substrate. The fully integrated system generated a flow rate of 4.72 ± 0.35 μL/min under applied constant current of 1.0 mA while maintaining a power consumption of only ~3 mW. Finally, we demonstrated in vivo application of the system for anti-cancer drug delivery in mice.
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