PARIS (Reuters) -Artificial heart maker Carmat, whose financial situation has been under pressure, said on Monday that it had completed a 7 million euro ($7.4 million) capital raising backed by several of its historical financial shareholders. Carmat, whose shareholders include European planemaker Airbus, estimated it will nevertheless have to secure around 50 million euros ($52.6 million) in extra financing to cover its operations and investments until the end of October 2024. Airbus was not named among the shareholders participating in the capital raising and its stake has fallen to 10.8% from 11.7%, making it the second-biggest investor down from its earlier first position, according to Carmat.