Arrayed 3d Parylene Sheath Probes for Neural Recordings
نویسندگان
چکیده
Parylene C arrayed neural probes possessing 3D sheath structures that can be decorated with neurotrophic factors for attracting and promoting neural tissue ingrowth are presented for long-term intracortical neural recording. 3D sheath structures were constructed through thermoforming of surface micromachined Parylene microchannels around a solid microwire mold. Multiple Pt electrodes were patterned along the sheath lumen and exterior. Electrochemical characterization of the electrodes confirmed impedance values (25-150 kΩ at 1 kHz) suitable for neural recordings. Sheath probes were temporarily stiffened for a successful implantation demonstrated in agarose brain tissue model.
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تاریخ انتشار 2013