A device to assist the performance of a heart with at least one pump that is formed as a rotary pump and driven via a magneto coupling.

A device to assist the performance of a heart with at least one pump that is formed as a rotary pump and driven via a magneto coupling.

A blood pump can include a pump housing, an impeller, and a hub. The pump housing can be configured to move blood from an inlet to an outlet thereof. The impeller can be housed in the pump housing, have a plurality of blades joined by a central ring, and be radially supported at the central ring by a bearing. The hub can transmit torque to the impeller using a radial magnetic coupling.

Systems and methods for detecting suction events in blood pumps by monitoring pump motor current. A pump suction event is detected based on a comparison of a pulsatility index that is calculated based on a filtered pump motor current signal with a first predetermined threshold or based on a comparison of a calculated index associated with a normalized band-pass filtered pump motor current signal with a second predetermined threshold. A suction event is also detected based on comparisons of both the calculated pulsatility index and the calculated index associated with the normalized band-pass filtered pump motor current signal with respective first and second predetermined thresholds.

A percutaneous circulatory support device includes a housing and an impeller disposed within the housing. The impeller is rotatable relative to the housing to cause blood to flow through the percutaneous circulatory support device. The device further includes a reservoir disposed within the housing, and the reservoir carries at least one anticoagulant.

A percutaneous circulatory support device includes a housing and an impeller disposed within the housing. The impeller is rotatable relative to the housing to cause blood to flow through the percutaneous circulatory support device. The device further includes a reservoir disposed within the housing, and the reservoir carries at least one anticoagulant.

A catheter pump system includes a catheter assembly having a proximal end, a distal end, and an elongate body extending therebetween. The catheter pump system also includes a motor assembly including a shaft assembly extending at least partially within the elongate body of the catheter assembly. The shaft assembly is configured to rotate about an axis. The catheter pump system further includes a flow diverter housing defining a chamber and a fluid pathway through which a proximally-conveyed fluid flows. The shaft assembly extends outward from the chamber into an inner lumen of the elongate body. The catheter pump system also includes a seal configured to extend around and engage the shaft assembly to inhibit fluid within the elongate body of the catheter assembly from entering the chamber at least about an outer periphery of the shaft assembly.

A catheter pump system includes a catheter assembly having a proximal end, a distal end, and an elongate body extending therebetween. The catheter pump system also includes a motor assembly including a shaft assembly extending at least partially within the elongate body of the catheter assembly. The shaft assembly is configured to rotate about an axis. The catheter pump system further includes a flow diverter housing defining a chamber and a fluid pathway through which a proximally-conveyed fluid flows. The shaft assembly extends outward from the chamber into an inner lumen of the elongate body. The catheter pump system also includes a seal configured to extend around and engage the shaft assembly to inhibit fluid within the elongate body of the catheter assembly from entering the chamber at least about an outer periphery of the shaft 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 catheter pump is disclosed. The catheter pump can include an impeller and a catheter body having a lumen therethrough. The catheter pump can also include a drive shaft disposed inside the catheter body. A motor assembly can include a chamber. The motor assembly can include a rotor disposed in the at least a portion of the chamber, the rotor mechanically coupled with a proximal portion of the drive shaft such that rotation of the rotor causes the drive shaft to rotate. The motor assembly can also comprise a stator assembly disposed about the rotor. The motor assembly can also include a heat exchanger disposed about the stator assembly, the heat exchanger may be configured to direct heat radially outward away from the stator assembly, the rotor, and the chamber.