Study On Micro - Type No Valve Pump Driven By Electrode

In today’s society, the number of glaucoma patients continues to increase and it raisespublic attention all over the world. The related treatment of glaucoma also became thesignificant research topic. Micropump is one of the most impormont device for other devicesof microfluidic system, it has been widely used to medical fields.The electroosmosismicropump is used to microfluidics equipment widely. Compare with the other micro pumps,there are not removable units in the electroosmosis micropump which is easy to carry andmaintain. In the manufacturing operation the electroosmosis micropump is easy to integratewith other microfluidics circuits. This paper presents designing one electroosmosismicropump with double parallel and the electroosmosis micropump choose the materialwhich has good biological compatibility. The electroosmosis micropump can be used for theprocessing for lavage set of glaucoma aqueous humor which can treat glaucoma.Firstly, this paper studies the basic principles of microfluidic system and analysis themechanisms of electric double layer’ producing in binary channels of the electroosmosismicropump. Through the theoretical model and using the simulation software analysis theinfluence factors of electroosmosis pump performance. Not only including the drivevoltage,but also the size of binary channels. Compare electroosmosis micropump withdouble parallel with electroosmosis micropump with series circuits，PDMS-glass doubleparallel with electrodes of microchannel valveless micropump are be produced when slidesare choosed for microchips basement to acquire optimum technology parameter. At last, theauthor uses the COMSOL to emulate the velocity of flow of one main channel，achieve theoptimal geometric parameter of structure and summarize the tendency of every factor whichhave an influence on the function of the electroosmotic flow.Then, the author confirms micromanufacturing technology of constant current electroosmosis micropump with double parallel,designs the structure of electroosmosis micropump’s microchannels and manufactures it withthe MEMS technology. With the experiment platform, the author keeps a record of thevolume of pumping liquids from every electroosmosis micropump, calculates the single micro -pump flow rate and total flow rate, and within the limits of human acceptable voltage5V,electroosmosis micropump’s flow rate can reach the normal rate of human eye aqueousdrainage, combines with normal intraocular aqueous drainage velocity, confirms reasonablevalue of drive voltage, it will produce guidance for making the actual available aqueousdrainage devices in the future.