Title :
A 100-channel hermetically sealed implantable device for wireless neurosensing applications
Author :
Yin, Ming ; Borton, David A. ; Aceros, Juan ; Patterson, William R. ; Nurmikko, Arto V.
Author_Institution :
Sch. of Eng., Brown Univ., Providence, RI, USA
Abstract :
A 100-ch fully head-implantable wireless broadband neural recording system was developed. It features 100 parallel wideband (0.1Hz ~ 7.8 kHz) neural recording channels, a medical grade 200mAh Li-ion battery recharged inductively at 2 MHz, and data telemetry using both 3.2/3.8GHz FSK wireless and 850nm IR laser data link. All active electronics are hermetically sealed in a titanium enclosure with a sapphire window. Custom 100 individual hermetic feedthroughs enable connection to the microelectrode intracortical array. This wireless implant has been validated both on-bench and in freely moving pig and monkey models.
Keywords :
biomedical electrodes; biomedical telemetry; biosensors; body sensor networks; microelectrodes; neurophysiology; physiological models; prosthetics; 100-channel hermetically sealed implantable device; IR laser data link; Li-ion battery; data telemetry; freely moving pig; frequency 3.2 GHz; frequency 3.8 GHz; microelectrode intracortical array; monkey models; parallel wideband neural recording channels; sapphire window; titanium enclosure; wavelength 850 nm; wireless implant; wireless neurosensing applications; Application specific integrated circuits; Batteries; Clocks; Preamplifiers; Radio frequency; Wireless communication; Wireless sensor networks;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6271845
