Implantable device for acquisition and monitoring of brain bioelectric signals and for intracranial stimulation

摘要

The invention relates to an implantable device (150) for the acquisition and monitoring of brain bioelectric signals comprising a plurality of active electrodes (1100) suitable to detect brain bioelectric signals, said active electrodes (1100) being arranged on a grid (1000) connected to an electronic module (200) of the implantable device (150) according to a predefined pattern. The active electrodes (1100) are connected to a microprocessor (213) of said electronic module (200) through respective paths (115) formed on said grid (1000) and connected to at least one analog input unit (201, 202, 203, 204, 205, 206, 207, 208) arranged in the electronic module (200), said at least one analog input unit being in turn connected to at least one passive electrode (REF1, REF2, REF3, REF4, REF5, REF6, REF7, REF8) and to said microprocessor (213) through a data bus (214). The at least one analog input unit (201, 202, 203, 204, 205, 206, 207, 208) comprises an analog-to-digital converter for each active electrode (1100) connected thereto. Thanks to these features, it is possible to acquire in parallel and simultaneously the bioelectric signals detected by each active electrode, which results in an improvement in the accuracy of localization and mapping of a brain disease focus. The invention also relates to a data acquisition and processing system, which comprises the implantable device (150).