Title :
Multiparameters monitoring for long term in-vivo characterization of electrode-tissues contacts
Author :
Lesbros, Guillaume ; Sawan, Mohamad
Author_Institution :
Ecole Polytech. de Montreal, Montreal
Abstract :
This paper concerns the design of an integrated circuit (IC) dedicated to monitor electrode-tissues contact (ETC). It is the main module of an implantable telemetry device. This device allows one to apply various principles of electrochemical system´s studies, such as cyclic voltammetry, electrochemical impedance spectroscopy, galvanostatic double pulse method, and thus, to measure the evolution of various parameters surrarounding the ETC: complex impedance, faradic resistance, double layer capacity, rheobase current and chronaxy time. The circuit has been designed and implemented with the CMOS 0.18 mum technology with an area of 2mm2. The proposed technique and the IC functionalities were validated in our laboratory during in-vitro experimentations.
Keywords :
CMOS integrated circuits; biomedical electrodes; biomedical electronics; biomedical telemetry; patient monitoring; prosthetics; CMOS technology; chronaxy time; complex impedance; double layer capacity; electrochemical system; electrode-tissues contacts; faradic resistance; implantable telemetry device; in-vivo characterization; integrated circuit; multiparameters monitoring; rheobase current; size 0.18 mum; CMOS technology; Current measurement; Electrical resistance measurement; Electrochemical impedance spectroscopy; Impedance measurement; Integrated circuit measurements; Monitoring; Pulse measurements; Telemetry; Time measurement; CMOS integrated circuits; Data acquisition; Electrical stimulation; Electrode-tissues contact; Implantable devices; Wireless Monitoring; mixed-signal circuits;
Conference_Titel :
Electronics, Circuits and Systems, 2006. ICECS '06. 13th IEEE International Conference on
Conference_Location :
Nice
Print_ISBN :
1-4244-0395-2
Electronic_ISBN :
1-4244-0395-2
DOI :
10.1109/ICECS.2006.379672
