Chronically implantable hybrid cannula-electrode system for continuously monitoring electrophysiological signals during infusion of a chemical or pharmaceutical agent

摘要

An apparatus for simultaneously measuring electrophysiological signals in a target tissue and for infusing an agent into the target tissue comprises a body, a cannula mounted on the body, and at least one electrophysiological electrode in proximity to the cannula and mounted on the body so that the agent supplied to the cannula is provided to the proximity of the target tissue with which the at least one electrophysiological electrode is electrically coupled. The cannula and electrode are arranged and configured with respect to each in a selected configuration to allow the apparatus to be customized for optimal implantation in specific neurological sites.