Abstract

Hydrocephalus is a severe condition that cause excessive accumulation of cerebrospinal fluid (CSF) into the cavities of the brain (ventricles). The shunt system is the treatment used to redirect the CSF to another part of the body, this treatment has presented failures (one-year failure rate in standard valve 40%) [1]. The shunt consists in a valve and two catheters (distal, proximal). The CSF is and electrolyte, Newtonian and incompressible fluid, that contains Na+, K+, Mg2+, Ca2+, Cl-, HCO3-. This numerical simulation of CSF was applied an electrical field by electroosmotic phenomena in a microchannel wich represent a catheter. This electrolyte fluid is based on multi species and 2-D symmetric geometry. Electroneutrality [6] was equal for cations and anions 1.57 mol/m^3.