Surgical tunnelers; devices for facilitating vascular access; devices for forming subcutaneous routes; devices for forming subcutaneous routes for vascular access and/or vascular implants; medical guidewire manipulators; surgical kits including primarily at least in part any one or more of surgical tunnelers, devices for facilitating vascular access, devices for forming subcutaneous routes, devices for forming subcutaneous routes for vascular access and/or vascular implants, and/or medical gu...