A device for attachment to a spinal implant construct is disclosed. The device generally includes at least one pedicle screw with a housing adapted for subcutaneous implantation. The housing comprises an electrical battery and an electrically conductive attachment to conduct electrical current from the battery to the screw. Once the screw is inserted into the patients pedicle, the housing and attachment are inserted in the patient either by minimally invasive tubing or through a minimally invasive incision. The attachment may be attached to the implant construct after the pedicle screw has been inserted into the patients pedicle.
