Patent ID: 8849369
Filing Date: 2014-09-30
Classification: A61B,A61N

Abstract:
1. A medical device for recording and stimulating brain activity at a site of device implantation, comprising: an implantable flexible substrate having a dura-facing side and an opposing brain-facing side; an array of electrodes disposed on said brain-facing side and adapted for sensing electrical signals from a subject's brain; a reference electrode mounted on said dura-facing side, wherein said reference electrode is physically separated from the subject's brain by the flexible substrate and adapted to provide a reference voltage; implantable control circuitry in communication with the brain-facing electrodes and said dura-facing reference electrode; implantable wireless transmission circuitry connected to the control circuitry and adapted to transmit digital data derived from said sensed brain electrical signals to receiving circuitry external to the site of device implantation; and implantable wireless receiver circuitry for receiving wireless commands transmitted from a site external to the site of device implantation, wherein said implantable control circuitry provides an electrical stimulus to the subject's brain via at least two of said brain-facing electrodes and records sensed electrical signals based on said reference voltage and said sensed electrical signals.