MESSPLATZ ZUR IN VITRO UNTERSUCHUNG DER KORROSION VON NERVENELEKTRODEN UNTER STIMULATIONSBEDINGUNGEN

M MM l lei tnules tonn the inlcrfacc belwecn i.\ h i t k . i l , uu l bioloi'jcal system and arc exposcd to an miensv. ekvtro-chcmical strain (St imulat ion currcnt). I h c l l cx ih lc microeleetrodes, developed al the l u imholcr I n s l i l u l e for Biomedieal Engineering l UM l . posscss oxtK'inely small surlaees and incrcased dcnsitics in contrast to clinically tested nuuiK-lectrodes Icuding to the increased demands of t l k niKTodcctwdes. With (bis work a measuring vk'\ k'c \\as roali/cd, that allows to analyse the oMios ion category of a lange number of electrodes Minu l t aneous ly , dunng long periods of testing, for dcvdopuiL' Strategie* for the reduction of Ihe electroJicmk-al strcs.s. Components of the measuring device a host-IV to initialize, supervise and slore the MKMsmvd ilata, a stimulator unit with 64 channels to cikTL'i/c ihc ncr\-c electrodes äs well äs a measuring ik\kv lor the survey of the signal response to iletermme l he corrosion eategory.