The present invention relates to a heart pump apparatus comprising a turbine pump for assisting the heart of a human patient. The invention is based on the realization that a turbine without a centre axis would improve the capacity of the heart help pump apparatus. The present invention also relates to a turbine pump system for assisting the heart of a human patient. The present invention also relates to operation methods and methods for surgically placing a rotating body of a turbine pump and a stator of a turbine pump in a patient.

A highly portable advanced adult and pediatric compact ECLS system is based around an integrated pump-oxygenator. The system includes a central a blood inlet and flow path extending along a general longitudinal axis of the system; a pump housing defining a pump inlet in fluid communication with the central blood flow path; an impeller rotationally received within the area of the pump inlet, wherein the impeller is magnetically supported and magnetically driven; an array of hollow fiber membranes configured for gas transfer within the system for oxygenation of blood flowing across the hollow fiber membranes, wherein the membranes include a covalently-bonded heparin-based bioactive surface, and wherein the blood flow path extends from the impeller to a position to flow perpendicular over the array of hollow fiber membranes; and a blood outlet configured to receive blood flowing past the array of hollow fiber membranes.

A highly portable advanced adult and pediatric compact ECLS system is based around an integrated pump-oxygenator. The system includes a central a blood inlet and flow path extending along a general longitudinal axis of the system; a pump housing defining a pump inlet in fluid communication with the central blood flow path; an impeller rotationally received within the area of the pump inlet, wherein the impeller is magnetically supported and magnetically driven; an array of hollow fiber membranes configured for gas transfer within the system for oxygenation of blood flowing across the hollow fiber membranes, wherein the membranes include a covalently-bonded heparin-based bioactive surface, and wherein the blood flow path extends from the impeller to a position to flow perpendicular over the array of hollow fiber membranes; and a blood outlet configured to receive blood flowing past the array of hollow fiber membranes.

A fluid pump for conveying a fluid is provided comprising: a housing with a fluid inlet and a fluid outlet, a rotor which is disposed rotatably about an axis of rotation in the housing, and a rotor body and at least one conveying element connected rigidly to the rotor body in order to convey the fluid from the fluid inlet to the fluid outlet, the rotor being mounted in the housing radially to the axis of rotation by means of a passive magnetic bearing and also axially and radially by means of a mechanical and/or hydrodynamic bearing disposed on the inlet side or outlet side. A safety bearing is disposed on one side of the rotor situated opposite the mechanical and/or hydrodynamic bearing, wherein the safety bearing has a first safety bearing component connected rigidly to the rotor and a second safety bearing component connected rigidly to the housing.

A fluid pump for conveying a fluid is provided comprising: a housing with a fluid inlet and a fluid outlet, a rotor which is disposed rotatably about an axis of rotation in the housing, and a rotor body and at least one conveying element connected rigidly to the rotor body in order to convey the fluid from the fluid inlet to the fluid outlet, the rotor being mounted in the housing radially to the axis of rotation by means of a passive magnetic bearing and also axially and radially by means of a mechanical and/or hydrodynamic bearing disposed on the inlet side or outlet side. A safety bearing is disposed on one side of the rotor situated opposite the mechanical and/or hydrodynamic bearing, wherein the safety bearing has a first safety bearing component connected rigidly to the rotor and a second safety bearing component connected rigidly to the housing.

A centrifugal fluid pump with a fully magnetically suspended rotor to improve blood compatibility when pumping blood is disclosed. The pump stabilizes radial displacements of a disc-like rotor with active control through separate electric motor and magnetic bearings to improve the pump's critical performances including device packaging size, system simplicity and reliability, stiffness and other dynamic performances of suspension, power efficiency, and others.

Various aspects of the present disclosure are directed towards apparatuses, systems, and methods that may include a blood pump. The blood pump may include a magnetic field source and an impeller assembly. The impeller assembly includes an impeller and a driven magnet. The driven magnet is longitudinally offset and distally disposed relative to the magnetic field source, and the driven magnet is rotatable and longitudinally controlled by the magnetic field source. The driven magnet includes a distal side, the distal side faces the impeller. The blood pump further includes a bearing assembly near the distal side of the driven magnet.

Various aspects of the present disclosure are directed towards apparatuses, systems, and methods that may include a blood pump. The blood pump may include a magnetic field source and an impeller assembly. The impeller assembly includes an impeller and a driven magnet. The driven magnet is longitudinally offset and distally disposed relative to the magnetic field source, and the driven magnet is rotatable and longitudinally controlled by the magnetic field source. The driven magnet includes a distal side, the distal side faces the impeller. The blood pump further includes a bearing assembly near the distal side of the driven magnet.

A blood flow assist system can include an impeller assembly including an impeller shaft and an impeller on the impeller shaft, a primary flow pathway disposed along an exterior surface of the impeller. The system can include a rotor assembly at a proximal portion of the impeller shaft. A secondary flow pathway can be disposed along a lumen of the impeller shaft. During operation of the blood flow assist system, blood can be pumped proximally along the primary flow pathway and the secondary flow pathway. The system can include a sleeve bearing distal the impeller. The system can include a drive unit having a distal end disposed distal a proximal end of the second impeller. The drive unit comprising a drive magnet and a drive bearing between the drive magnet and the impeller assembly.

A heart pump including a housing forming a cavity including at least one inlet and at least one outlet, an impeller provided within the cavity, the impeller including vanes for urging fluid from the inlet to the outlet upon rotation of the impeller, a drive that rotates the impeller within the cavity, a magnetic bearing including at least one bearing coil that controls an axial position of the impeller within the cavity and a controller. The controller includes an electronic processing device that monitors changes in a bearing indicator in response to a perturbation in blood flow, the bearing indicator being at least partially indicative of operation of the magnetic bearing and controls the drive to thereby selectively change a rotational speed of the impeller at least partially in accordance with changes in the bearing indicator.