Zimmer, a U.S. medical device maker, is going to receive approval from European Union regulators for its proposed $13.4 billion acquisition of Biomet. Zimmer revised its concessions to the European Union Commission, setting it to become the No. 2 firm in the $45 billion global orthopedics market after the deal, saying they were consistent with an earlier package. In December the firm mentioned selling one unit for partial-to-unicompartmental, replacement and one other unit in Europe.