P6072914NL 11 Abstract A heart support device for circulatory assistance is disclosed. The device comprises a chamber body (10) defining a chamber having an internal volume configured to be filled with blood. The chamber 5 body (10) has a first opening (12) and the chamber is dimensioned such that the first opening (12) and the chamber are fully disposed within a chamber of the human heart. A dynamic volume body (14) is provided and configured to be inflated or deflated to alternately increase or decrease the interior volume ofthe chamber. A catheter (16) comprising at least one lumen in fluid communication with the dynamic volume body is configured to deliver fluid to the dynamic volume body to inflate the dynamic volume 10 body. A directional fiow structure is configured to direct a flow of blood out of the chamber in a direction substantially aligned with a direction in which the catheter (16) extends.
