An unidentified medical device manufacturer is considering construction of a facility on Colorado Springs’ far north side that could employ more than 500 people. The company is looking to initially build 137,000 square feet of office and manufacturing space on nearly 18 acres southwest of Voyager Parkway and Republic Drive, east of Interstate 25, according to documents recently submitted to the city’s Land Use Review Division. The initial phase also would include a 7,000-square-foot “product finishing building,” documents show.