Systems and method for powering an implanted blood pump are disclosed herein. The system can be a mechanical circulatory support system. The mechanical circulatory support system can include an implantable blood pump. The implantable blood pump includes a DC powered pump control unit that can control the blood pump according to one or several stored instructions. The implantable blood pump includes a rectifier electrically connected to the pump control unit. The implantable rectifier can convert the AC to DC for powering the pump control unit. The system can include an external controller electrically connected to the rectifier. The external controller can provide AC electrical power to the implantable blood pump.

Disclosed is a blood pump device. The blood pump device includes: a housing having an overflow passage, and an inlet and an outlet respectively connected to the overflow passage; a rotor assembly rotatably disposed in the overflow passage; a coil disposed in a side wall of the housing; a first permanent magnet portion disposed inside the rotor assembly; a second permanent magnet portion disposed in the side wall of the housing, the first permanent magnet portion and the second permanent magnet portion forming a radial permanent magnet bearing; a piece of electric motor magnetic steel disposed inside a rotor of the rotor assembly; and a magnetic protection portion disposed at a periphery of the coil, wherein the magnetic protection portion and the electric motor magnetic steel act together to provide an axial pre-tightening force for the rotor assembly.

Disclosed is a blood pump device. The blood pump device includes: a housing having an overflow passage, and an inlet and an outlet respectively connected to the overflow passage; a rotor assembly rotatably disposed in the overflow passage; a coil disposed in a side wall of the housing; a first permanent magnet portion disposed inside the rotor assembly; a second permanent magnet portion disposed in the side wall of the housing, the first permanent magnet portion and the second permanent magnet portion forming a radial permanent magnet bearing; a piece of electric motor magnetic steel disposed inside a rotor of the rotor assembly; and a magnetic protection portion disposed at a periphery of the coil, wherein the magnetic protection portion and the electric motor magnetic steel act together to provide an axial pre-tightening force for the rotor assembly.

A pump intended to be immersed in a fluid, including a housing, a brushless motor unit formed by a stator in which first magnetic elements are disposed, a rotor having second magnetic elements intended for magnetic coupling with the first magnetic elements of the stator, a transmission shaft connected to the rotor and constituting, in its upper part, a turbine, the turbine includes, at its apex, an output pivot interacting with a guide fastened to the housing, the guide having a complementary shape to that of the output pivot so as to keep the output pivot stable in rotation and to form a space between the output pivot and the guide, and the guide includes a central opening in the axis of rotation of the output pivot for a passage of fluid from the inside of the housing to the outside via the space and the opening.

A pump intended to be immersed in a fluid, including a housing, a brushless motor unit formed by a stator in which first magnetic elements are disposed, a rotor having second magnetic elements intended for magnetic coupling with the first magnetic elements of the stator, a transmission shaft connected to the rotor and constituting, in its upper part, a turbine, the turbine includes, at its apex, an output pivot interacting with a guide fastened to the housing, the guide having a complementary shape to that of the output pivot so as to keep the output pivot stable in rotation and to form a space between the output pivot and the guide, and the guide includes a central opening in the axis of rotation of the output pivot for a passage of fluid from the inside of the housing to the outside via the space and the opening.

The present application relates to a blood pump, preferably for assisting a heart, wherein the blood pump comprises a housing with a distal inlet, a proximal inlet, and a mandrel arranged between the inlet and the outlet. A rotor with blading is arranged on the mandrel coaxially and rotatably. The rotor is mounted on the mandrel magnetically in an axial direction. In one embodiment the outlet is situated proximally to a proximal end of the blading of the rotor.

A ventricle assist device comprising a device body with a housing having an inlet and an outlet. A centrifugal pump is disposed in a portion of the housing. The inlet is adapted to allow a flow of blood into the device body housing and an outlet adapted to allow the flow of blood from the device body housing. The flow of blood from the device body housing is primarily directed into the left ventricle, and the inlet and the outlet are positionable in a ventricle.

A heart pump including a housing defining 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, a sensor that senses an axial position of the impeller within the cavity and a controller. The controller includes an electronic processing device that, in response to a change in axial hydraulic forces on the impeller determines an axial position of the impeller within the cavity, determines a reference power in accordance with the determined axial position and controls the magnetic bearing to cause the impeller to move until a bearing power indicator indicative of the power used by the magnetic bearing reaches the reference power.

A blood pump (10) includes a pump housing (30) having a pump inlet (16) and a pump outlet (18) spaced apart along a longitudinally extending central pump axis (28). The blood pump (10) also includes a rotating assembly (100) comprising an impeller (104). The blood pump (10) further includes partial arc journal bearings (160, 180) that support the rotating assembly (100) for rotation in the housing (30). The rotating assembly (100) is rotatable relative to the housing (30) to pump blood from the pump inlet (16) to the pump outlet (18).

A blood pump (10) includes a pump housing (30) having a pump inlet (16) and a pump outlet (18) spaced apart along a longitudinally extending central pump axis (28). The blood pump (10) also includes a rotating assembly (100) comprising an impeller (104). The blood pump (10) further includes partial arc journal bearings (160, 180) that support the rotating assembly (100) for rotation in the housing (30). The rotating assembly (100) is rotatable relative to the housing (30) to pump blood from the pump inlet (16) to the pump outlet (18).