A high-performance silicon micropump for an implantable drug delivery system

作者: D. Maillefer , H. van Lintel , G. Rey-Mermet , R. Hirschi

DOI: 10.1109/MEMSYS.1999.746886

关键词:

摘要: This paper describes the design and measurement results of a new silicon piezoelectric micropump developed to be heart an implantable drug infusion system. The device is based on bulk micromachining, pyrex anodic bonding actuation. pumping mechanism has been designed for maximum safety reliability together with high open-loop accuracy (/spl plusmn/10%) in low flow rate range (0-100 /spl mu/1/h). It ensures constant stroke volume (150 nl) over wide working conditions through implementation double limiter, controlling membrane. Consequently, linear actuation frequency virtually insensitive inlet outlet pressure, voltage, temperature, viscosity aging. pump self-priming dead ratio Delta/V/V/sub 0/=1.15. also features on-chip barrier filter particle protection functional detector. More than 100 pumps last generation have fabricated fully tested.

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