Baseplate Implantation for Two-Part Chamber System v1

This protocol describes how to implant a "baseplate" onto the skull. The baseplate forms the bottom layer of the full chamber, which is completed in the second surgical procedure by mounting a "second" or "third" phase (described in another protocol entitled, "Craniotomy, and Second and Third Phase Implantation to Complete Two-Part Chamber System"). The baseplate is thin enough (8 - 10 mm) that it can be completely enclosed subcutaneously. Therefore, this piece is implanted first and as a separate piece in order to create an aseptic environment for healing and to promote osseointegration without risk of infectious species spreading through the chamber margins.