An extracorporeal system for lung assist includes a housing which includes a blood flow inlet in fluid connection with a pressurizing stator compartment, a fiber bundle compartment in fluid connection with the pressurizing stator compartment via a flow channel within the housing, and a blood flow outlet in fluid connection with the fiber bundle compartment. An impeller is rotatably positioned within the pressurizing compartment for pressurizing blood entering the pressurizing stator compartment from the blood flow inlet. The system further includes a fiber bundle positioned within the fiber bundle compartment. The fiber bundle includes a plurality of hollow gas permeable fibers. The plurality of hollow gas permeable fibers is adapted to permit diffusion of gas between blood and an interior of the hollow gas permeable fibers. The plurality of hollow gas permeable fibers is positioned such that blood flows around the plurality of hollow gas permeable fibers when flowing through the fiber bundle compartment. The plurality of hollow gas permeable fibers extend generally perpendicular to the direction of bulk flow of blood through the fiber bundle compartment from the flow channel to the blood flow outlet. The system further includes a gas inlet in fluid connection with the housing and in fluid connection with inlets of the plurality of hollow gas permeable fibers and a gas outlet in fluid connection with the housing and in fluid connection with outlets of the plurality of hollow gas permeable fibers.

The invention relates to a radial blood pump (1) for supporting a blood flow (106) in a human or animal heart (205) comprising a first and a second inlet channel (41, 42), a first outlet channel (51, 52), a first electric motor (71) comprising a first stator (77) and a first internal rotor (75), wherein the first electric motor (71) is configured to drive an impeller (2, 2a, 2b) arranged at an intersection of the first with the second inlet channel (41, 42), wherein the impeller (2, 2a, 2b) is connected to the first internal rotor (75) and wherein the impeller (2, 2a, 2b) comprises a merging portion (22) arranged at the intersection, where a merging of a first blood flow (106) coming from the first inlet channel (41) and a second blood flow (107) coming from the second inlet channel (42) takes place, wherein the impeller (2, 2a, 2b) is configured to pump the first and second blood flow (106, 107) from the first and second inlet channel (41, 42) via the merging portion (22) to the first outlet channel (51), a plurality of blades (20) comprised by the impeller (2, 2a, 2b), wherein the blades (20) form blade channels (21) comprised by the merging portion (22), wherein each blade (20) is arranged and configured to pump the first and second blood (106, 107) flow entering through the first and the second inlet channel (41, 42) towards the outlet channel (51), wherein the blood pump (1) is arranged and configured such that the first blood flow (106) and the second blood flow (107) meet at the merging portion (22), such that a pressure difference between the first and second blood flow (106, 107) is reduced before blood from first and second blood flow (106, 107) is pumped to the first outlet channel (51).

The invention relates to a radial blood pump (1) for supporting a blood flow (106) in a human or animal heart (205) comprising a first and a second inlet channel (41, 42), a first outlet channel (51, 52), a first electric motor (71) comprising a first stator (77) and a first internal rotor (75), wherein the first electric motor (71) is configured to drive an impeller (2, 2a, 2b) arranged at an intersection of the first with the second inlet channel (41, 42), wherein the impeller (2, 2a, 2b) is connected to the first internal rotor (75) and wherein the impeller (2, 2a, 2b) comprises a merging portion (22) arranged at the intersection, where a merging of a first blood flow (106) coming from the first inlet channel (41) and a second blood flow (107) coming from the second inlet channel (42) takes place, wherein the impeller (2, 2a, 2b) is configured to pump the first and second blood flow (106, 107) from the first and second inlet channel (41, 42) via the merging portion (22) to the first outlet channel (51), a plurality of blades (20) comprised by the impeller (2, 2a, 2b), wherein the blades (20) form blade channels (21) comprised by the merging portion (22), wherein each blade (20) is arranged and configured to pump the first and second blood (106, 107) flow entering through the first and the second inlet channel (41, 42) towards the outlet channel (51), wherein the blood pump (1) is arranged and configured such that the first blood flow (106) and the second blood flow (107) meet at the merging portion (22), such that a pressure difference between the first and second blood flow (106, 107) is reduced before blood from first and second blood flow (106, 107) is pumped to the first outlet channel (51).

This invention is directed to a corrosion resistant permanent magnet, to a method for producing a corrosion resistant permanent magnet, and to an intravascular blood pump comprising the magnet. The magnet is corrosion resistant due to a composite coating comprising a metal layer, optionally a metal oxide layer, a layer formed from poly(2-chloro-p-xylylene), and a linker layer between the metal oxide layer and the poly(2-chloro-p-xylylene) layer.

A catheter pump having a drive unit and a catheter. The catheter has a pump head for inserting into the aorta and having a rotatably arranged rotor shall for driving an expandable conveying element provided on the pump head and has, at the proximal end thereof, a coupling section, which is connected to the rotor shaft for conjoint rotation and which can be rotated about a coupling axis. The drive unit having a drive and a drive section, which can be driven in rotation about a drive axis by the drive, the coupling section and/or the drive section having magnet elements for contactless mutual rotational coupling. The coupling and drive axes being spaced from each other by a distance a in the perpendicular direction in such a way that the magnetic field of the magnet elements pushes the coupling section in a direction extending perpendicularly to the coupling axis.

The invention relates to a pumping device for pumping liquids, comprising a centrifugal pump with a radially pumping pump wheel with a hollow center. A pumping device 101 is proposed to provide a device for pumping liquids with a centrifugal pump with a radially pumping pump wheel with a hollow center, said pump being equipped to remove accumulations of gas from the interior of the pump, with a centrifugal pump 110 with a radially pumping pump wheel 201 with a hollow center, a detecting device 120 for detecting the first operating parameter 510, a sensor 130 for measuring a second operating parameter 520 and a control unit 180 for controlling the centrifugal pump 110 which is connected to the pump 110, the detecting device 120 for detecting the first operating parameter 510 and to the sensor 130, During operation, the pump 110 may be assigned a value of the first operating parameter 510 at any point in time. The control unit 180 is also equipped so that it controls the operation of the pump 110 and can remove accumulations of gas from the hollow center of the pump 110 during liquid pumping operation of the pump 110 by operating the pump 110 in a first step for removal of gas such that at least the first operating parameter 510 of the pump 110 is varied over time t, so that the first operating parameter 510 assumes a series of different predetermined values, one after another, and meanwhile values of the second operating parameter 520 associated with the values of the first operating parameter 510 are recorded, local and/or global extreme values E of the previously recorded values of the second operating parameter 520 are determined in a second step for removal of gas; those values 510E of the first operating parameter 510 are determined in a third step for gas removal, these values being associated with the extreme values E of the second operating parameter 520 previously determined; in a fourth step for removal of gas, the pump 110 is operated so that it assumes one of the values of the first operating parameter 510 associated with the extreme values E of the second operating parameter 520 for a predetermined period of time T.

A blood pump system includes a pump housing and an impeller for rotating in a pump chamber within the housing. The impeller has a first side and a second side opposite the first side. The system includes a stator having drive coils for applying a torque to the impeller and at least one bearing mechanism for suspending the impeller within the pump chamber. The system includes a position control mechanism for moving the impeller in an axial direction within the pump chamber to adjust a size of a first gap and a size of a second gap, thereby controlling a washout rate at each of the first gap and the second gap. The first gap is defined by a distance between the first side and the housing and the second gap is defined by a distance between the second side and the pump housing.

A blood pump system includes a pump housing and an impeller for rotating in a pump chamber within the housing. The impeller has a first side and a second side opposite the first side. The system includes a stator having drive coils for applying a torque to the impeller and at least one bearing mechanism for suspending the impeller within the pump chamber. The system includes a position control mechanism for moving the impeller in an axial direction within the pump chamber to adjust a size of a first gap and a size of a second gap, thereby controlling a washout rate at each of the first gap and the second gap. The first gap is defined by a distance between the first side and the housing and the second gap is defined by a distance between the second side and the pump housing.

An intravascular blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing so as to be rotatable about an axis of rotation, wherein the impeller has blades sized and shaped for conveying blood from the blood flow inlet to the blood flow outlet. The blood pump further comprises a drive unit for rotating the impeller, the drive unit comprising a plurality of posts arranged about the axis of rotation, wherein each of the posts includes a shaft portion and a head portion. Coil windings around the posts are sequentially controllable so as to create a rotating magnetic field. The drive unit further comprises a back plate which engages ends of the shaft portions of the posts opposite the head portions.

Systems, methods, and devices for improved cooling of an implantable blood pump employ a thermal conductor to conduct heat to blood flowing through the blood pump. A method includes drawing a flow of blood into a blood pump, passing the flow of blood through the blood pump such that heat flow is conducted to the flow of blood via the thermal conductor, and outputting the flow of blood from the blood pump.