An apparatus for enclosing an organ after harvesting and before implantation, having a vessel enclosing a fluid, a connection tube for connecting a circulation hose to the organ for passing a fluid to the organ by a pump, and a degassing hose extending from the connection tube to the vessel. A pinch valve is arranged in the degassing hose. During a degassing phase, the pinch valve is opened to allow fluid flow from the pump, via the circulation hose to the connection tube and via the degassing hose to the vessel for expelling air entrapped in the fluid flow system. A balloon is arranged to prevent fluid flow via the connection tube to the organ during the degassing phase. A sterility arrangement closes the vessel at the top and may be replaced by further sterility arrangements without compromising the sterility.
