| Autor: |
Li PY; Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA ( poyingli@usc.edu )., Givrad TK, Holschneider DP, Maarek JM, Meng E |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of microelectromechanical systems : a joint IEEE and ASME publication on microstructures, microactuators, microsensors, and microsystems [J Microelectromech Syst] 2009 Dec; Vol. 18 (6), pp. 1184-1197. |
| DOI: |
10.1109/JMEMS.2009.2031689 |
| Abstrakt: |
The first microelectromechanical-system normally closed electrothermal valve constructed using Parylene C is described, which enables both low power (in milliwatts) and rapid operation (in milliseconds). This low-power valve is well suited for applications in wirelessly controlled implantable drug-delivery systems. The simple design was analyzed using both theory and modeling and then characterized in benchtop experiments. Operation in air (constant current) and water (current ramping) was demonstrated. Valve-opening powers of 22 mW in air and 33 mW in water were obtained. Following integration of the valve with catheters, our valve was applied in a wirelessly operated microbolus infusion pump, and the in vivo functionality for the appropriateness of use of this pump for future brain mapping applications in small animals was demonstrated. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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