Abstract: Provided are a driving mechanism and a blood pump. The driving mechanism comprises a housing, a rotating shaft, a rotor, a first shaft sleeve, a second shaft sleeve, and a stopping member. The rotating shaft is rotatably mounted on the housing. The rotating shaft has a connecting end and a ball head end away from the connecting end. The connecting end is configured to be connected to an impeller. The rotor is fixedly connected to the rotating shaft. The first shaft sleeve is provided with a groove. The rotating shaft is rotatably arranged on the second shaft sleeve in a penetrating manner. The ball head end is movably arranged in the groove. The stopping member is fixedly connected to at least one of the rotating shaft and the rotor. The stopping member can abut against the second shaft sleeve.

Abstract: Circulatory assist systems and related methods provide for pumping of blood from a ventricle to an artery. A circulatory assist system includes a ventricular assist device, a motor control circuit, a controller, a sensing circuit, and a blood flow cannula. The ventricular assist device includes a housing, a stator assembly, and a blood flow impeller. The blood flow impeller includes a first disk portion, a second disk portion, and vanes extending between the first disk portion and the second disk portion. Each of the first disk portion and the second disk portion includes embedded magnetic segments for rotation and levitation of the blood flow impeller. The first disk portion has central aperture configured for transit of a blood flow received through the blood flow inlet into the blood flow impeller for impelling radially outwardly between the first disk portion and the second disk portion via the vanes.

Abstract: 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.

Abstract: A rotary machine is provided which may include a rotor and a stator within a housing. The stator may be for generating a rotating magnetic field for applying a torque to the rotor. A commutator circuit may provide a plurality of phase voltages to the stator, and a controller may adjust the plurality of phase voltages provided by the commutator circuit to modify an attractive force of the stator on the rotor to move the rotor in an axial direction.

Abstract: A method for synchronizing operation of a heart assist pump device to a patient's cardiac cycle includes obtaining a signal from a motor of a heart assist pump device and filtering the signal to remove noise. The method also includes determining a speed synchronization start point at which time the motor of the heart assist pump device will begin a change in speed of operation based on the filtered signal. The method further includes modulating a speed of the motor of the heart assist pump device to a target speed at the speed synchronization start point, thereby synchronizing the change in speed of operation with a patient's cardiac cycle.

Abstract: Provided are a driving apparatus and a blood pump. The driving apparatus comprises a housing assembly, a rotating shaft, a rotor, a thrust member, and a stator. The housing assembly is provided with a limiting surface; the rotating shaft is rotatably mounted on the housing assembly; the rotor is fixedly connected to the rotating shaft; the thrust member is fixedly connected to at least one of the rotating shaft and the rotor, the thrust member, the limiting surface and the rotor are arranged in the axial direction of the rotating shaft, the thrust member is located between the limiting surface and the rotor, and the thrust member can abut against the limiting surface; the stator can generate a magnetic thrust on the rotor such that the thrust member abuts against the limiting surface.

Abstract: A driving device and a blood pump. The driving device comprises a driving housing, a shaft sleeve assembly, a rotating shaft, a driving component and a sensing assembly. An accommodating cavity and a detection port in communication with the accommodating cavity are provided on the shaft sleeve assembly, and the detection port is located on an outer wall of the shaft sleeve assembly; the rotating shaft is rotatably arranged on the shaft sleeve assembly; the driving component can drive the rotating shaft to rotate; and the sensing assembly comprises a sensor, the sensor comprising a probe, the probe being accommodated in the accommodating cavity, a position of the probe corresponding to a position of the detection port, and the probe being capable of detecting pressure of a fluid outside the driving device.

Abstract: A ventricular connecting assembly and a ventricular assist system. The ventricular connecting assembly comprises a clamping assembly and a locking assembly; the clamping assembly comprises an opening ring, a first connecting arm and a second connecting arm, and the opening ring has a first end and a second end; the first connecting arm) and the second connecting arm are respectively connected to the first end and the second end. The locking assembly comprises a connecting member and a locking member, the connecting member is connected to the second connecting arm, and the locking member is connected to the connecting member; the locking member is rotatably abutted against the first connecting arm, the locking member can adjust the inner diameter of the opening ring during rotation, and the locking member is snap-fitted with the second connecting arm to maintain the opening ring in a clamping state.

Abstract: A blood pump (100) and a driving device thereof. The driving device (10) comprising a driving shell (11), a rotor (12) and a stator mechanism (13); the rotor (12) comprises a rotating shaft (121) and a first magnet (122), one end of the rotating shaft (121) is accommodated in the driving shell (11), and the first magnet (122) is fixedly connected with the rotating shaft (121); the stator mechanism is accommodated in the driving shell (11), the stator mechanism (13) comprises a driving stator (131), the driving stator (131) and the rotating shaft (121) are provided at intervals along the axis of the rotating shaft (121), and the driving stator (131) can generate a rotating magnetic field interacting with the first magnet (122), so that the first magnet (122) can drive the rotating shaft (121) to rotate.

Abstract: A blood pump (100) and a driving device (10) thereof.

Abstract: A ventricular connecting assembly and a ventricular assist system. The ventricular connecting assembly comprises a clamping assembly and a locking assembly; the clamping assembly comprises an opening ring, a first connecting arm and a second connecting arm, and the opening ring has a first end and a second end; the first connecting arm) and the second connecting arm are respectively connected to the first end and the second end. The locking assembly comprises a connecting member and a locking member, the connecting member is connected to the second connecting arm, and the locking member is connected to the connecting member; the locking member is rotatably abutted against the first connecting arm, the locking member can adjust the inner diameter of the opening ring during rotation, and the locking member is snap-fitted with the second connecting arm to maintain the opening ring in a clamping state.

Abstract: 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.

Abstract: A rotary machine is provided which may include a rotor and a stator within a housing. The stator may be for generating a rotating magnetic field for applying a torque to the rotor. A commutator circuit may provide a plurality of phase voltages to the stator, and a controller may adjust the plurality of phase voltages provided by the commutator circuit to modify an attractive force of the stator on the rotor to move the rotor in an axial direction.

Abstract: A method for synchronizing operation of a heart assist pump device to a patient's cardiac cycle includes obtaining a signal from a motor of a heart assist pump device and filtering the signal to remove noise. The method also includes determining a speed synchronization start point at which time the motor of the heart assist pump device will begin a change in speed of operation based on the filtered signal. The method further includes modulating a speed of the motor of the heart assist pump device to a target speed at the speed synchronization start point, thereby synchronizing the change in speed of operation with a patient's cardiac cycle.

Abstract: An interventional ventricular assist device (100), including: an interventional tube (10). a motor assembly (30), a perfusion cylinder (40), and an impeller assembly (20). The interventional tube (10) has a liquid inlet (11) and a liquid outlet (12). The impeller assembly (20) includes an impeller (21), accommodated within the interventional tube (10) and rotatable to enable a liquid to flow into the interventional tube (10) via the liquid inlet (11) and out therefrom via the liquid outlet (12). The motor assembly (30) is configured to generate a rotating magnetic field to drive the impeller (21) to rotate and generate an attraction to the impeller (21). A perfusate injected from the perfusion cylinder (40) is adapted to provide a thrust to the impeller assembly (20), whereby the impeller (21) is suspendedly rotatable in the interventional tube (10) under a combined action of the thrust and the attraction.

Abstract: 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.

Abstract: The present application discloses a blood pump, the blood pump includes a cannula having a blood flow inlet and a blood flow outlet; an impeller is arranged in the cannula; a drive unit includes a casing connected to the cannula, and a rotor and a stator arranged in the casing, the rotor includes a rotating shaft and a magnet provided on the rotating shaft, the stator includes posts arranged around the axis of the rotating shaft and a coil winding around the peripheries of the posts, the coil winding can generate rotating magnetic field interacts with the magnet to rotate the rotating shaft, and the magnet and the posts are arranged at intervals along the extending direction of the rotating shaft.

Abstract: A rotary machine is provided which may include a rotor and a stator within a housing. The stator may be for generating a rotating magnetic field for applying a torque to the rotor. A commutator circuit may provide a plurality of phase voltages to the stator, and a controller may adjust the plurality of phase voltages provided by the commutator circuit to modify an attractive force of the stator on the rotor to move the rotor in an axial direction.

Abstract: A method for synchronizing operation of a heart assist pump device to a patient's cardiac cycle includes obtaining a signal from a motor of a heart assist pump device and filtering the signal to remove noise. The method also includes determining a speed synchronization start point at which time the motor of the heart assist pump device will begin a change in speed of operation based on the filtered signal. The method further includes modulating a speed of the motor of the heart assist pump device to a target speed at the speed synchronization start point, thereby synchronizing the change in speed of operation with a patient's cardiac cycle.

Abstract: An interventional ventricular assist device (100), including: an interventional tube (10). a motor assembly (30), a perfusion cylinder (40), and an impeller assembly (20). The interventional tube (10) has a liquid inlet (11) and a liquid outlet (12). The impeller assembly (20) includes an impeller (21), accommodated within the interventional tube (10) and rotatable to enable a liquid to flow into the interventional tube (10) via the liquid inlet (11) and out therefrom via the liquid outlet (12). The motor assembly (30) is configured to generate a rotating magnetic field to drive the impeller (21) to rotate and generate an attraction to the impeller (21). A perfusate injected from the perfusion cylinder (40) is adapted to provide a thrust to the impeller assembly (20), whereby the impeller (21) is suspendedly rotatable in the interventional tube (10) under a combined action of the thrust and the attraction.