Purge Cassette Recall: Abiomed Removes Impella Heart Pump Purge Cassettes Impella Generation 1 Purge Cassettes have an increased risk of purge leaks. Purge leaks can lead to low pump pressure and pump stops. Lingua Italiano Leggi tutto su Purge Cassette Recall: Abiomed Removes Impella Heart Pump Purge Cassettes