Abstract: A device (2) for providing circulatory assistance is provided and comprises a balloon (4) comprising a membrane defining a cavity having an internal volume (Vc), wherein the balloon comprises a proximal portion (4a) comprising a proximal end and a distal portion (4b) comprising a distal end. The device (2) further comprises a first catheter, affixed to the distal end of the balloon (4) at a first fixation point (P1) and a second catheter (8), affixed to the proximal end of the balloon at a second fixation point (P2). The second catheter (8) is configured for axial movement with respect to the first catheter or guide wire (6) between a first position in which the first and second fixation points (P1, P2) are spaced apart from each other in the longitudinal direction by a first distance (Dx), which is variable to bring about inversion of the balloon.

Abstract: A cardiac assist device with an expandable cup (4) having a transport state and an operational state, the expandable cup comprising a plurality of inflow apertures (5), and an outflow nozzle (6), and an inflatable balloon (8) positioned inside the expandable cup (4). A catheter assembly (3) is connected to the inflatable balloon (8) during operation, and a control unit (2) is connected to the catheter assembly (3). The control unit (2) is arranged to operate the inflatable balloon (8) with a frequency of more than 100 beats per minute.

Abstract: A cardiac assist device with an expandable cup (4) having a transport state and an operational state, the expandable cup comprising a plurality of inflow apertures (5), and an outflow nozzle (6), and an inflatable balloon (8) positioned inside the expandable cup (4). A catheter assembly (3) is connected to the inflatable balloon (8) during operation, and a control unit (2) is connected to the catheter assembly (3). The control unit (2) is arranged to operate the inflatable balloon (8) with a frequency of more than 100 beats per minute.

Abstract: A heart support device for circulatory assistance is disclosed. The device (2) comprises a chamber body (4) comprising an outer wall and defining an internal volume (Vx) configured to receive a volume of fluid. The chamber body (4) comprises an outlet opening (8) at its proximal end (4a), the outlet opening (8) being in fluid communication with an exterior volume in which the chamber body (4) is disposed. The outer wall of the chamber body (4) is configured to alternately collapse and expand between a first configuration in which the internal volume Vx=V1 and a second configuration in which the internal volume Vx=V2, wherein Vi is larger than V2, and thereby pump the fluid through the outlet opening (8). The cross-sectional internal diameter of the outlet opening (8) is less than a maximum cross-sectional internal diameter of the chamber body (4).