A catheter pump is disclosed herein. The catheter pump can include a catheter assembly that comprises a drive shaft and an impeller coupled to a distal end of the drive shaft. A driven assembly can be coupled to a proximal end of the drive shaft within a driven assembly housing. The catheter pump can also include a drive system that comprises a motor and a drive magnet coupled to an output shaft of the motor. The drive system can include a drive assembly housing having at least one magnet therein. Further, a securement device can be configured to prevent disengagement of the driven assembly housing from the drive assembly housing during operation of the pump.

Devices and methods for assisting blood flow are provided. The device includes a housing with an inlet and an outlet, and a fluid barrier separating the housing into a first section containing the inlet and outlet, and a second section. The device also includes an impeller shaft coupled to an impeller and a first magnet in the first section of the housing, and a drive shaft coupled to a second magnet in the second section of the housing. The first and second magnets are arranged such that rotation of the drive shaft rotates the second magnet causing rotation of the first magnet, which drives the impeller.

Devices and methods for assisting blood flow are provided. The device includes a housing with an inlet and an outlet, and a fluid barrier separating the housing into a first section containing the inlet and outlet, and a second section. The device also includes an impeller shaft coupled to an impeller and a first magnet in the first section of the housing, and a drive shaft coupled to a second magnet in the second section of the housing. The first and second magnets are arranged such that rotation of the drive shaft rotates the second magnet causing rotation of the first magnet, which drives the impeller.

The present disclosure provides intravascular ventricular assist devices for insertion into the vasculature of an individual to improve the overall blood flow of the individual. In many embodiments, the intravascular ventricular assist devices described herein provide an individual with an intravascular ventricular assist device that is sized and configured for insertion into an aortic root or pulmonary root such that its reduced size and placement provide the individual with an improved quality of life.

An impeller for a pump is disclosed herein. The impeller can include a hub having a fixed end and a free end. The impeller can also have a plurality of blades supported by the hub. Each blade can have a fixed end coupled to the hub and a free end. The impeller can have a stored configuration and a deployed configuration, the blades in the deployed configuration extending away from the hub, and the blades in the stored configuration being compressed against the hub.

An impeller for a pump is disclosed herein. The impeller can include a hub having a fixed end and a free end. The impeller can also have a plurality of blades supported by the hub. Each blade can have a fixed end coupled to the hub and a free end. The impeller can have a stored configuration and a deployed configuration, the blades in the deployed configuration extending away from the hub, and the blades in the stored configuration being compressed against the hub.

The approach presented here concerns a pump for delivering a fluid. The pump comprises an impeller, a drive device with a shaft, a shaft housing and a sealing device. The impeller is shaped to deliver the fluid. The drive device with the shaft is designed to drive the impeller. The shaft housing is shaped to receive the shaft and/or the drive device. The sealing device comprises at least one casing sealing element and/or an impeller sealing element which is received between the drive device and the impeller and which is designed to prevent fluid from entering the drive device and/or the shaft casing during operation of the pump.

The approach presented here concerns a pump for delivering a fluid. The pump comprises an impeller, a drive device with a shaft, a shaft housing and a sealing device. The impeller is shaped to deliver the fluid. The drive device with the shaft is designed to drive the impeller. The shaft housing is shaped to receive the shaft and/or the drive device. The sealing device comprises at least one casing sealing element and/or an impeller sealing element which is received between the drive device and the impeller and which is designed to prevent fluid from entering the drive device and/or the shaft casing during operation of the pump.

A blood pump includes a blood supply mechanism; a motor having a stator, a rotor and a shaft; a base body; a casing; a fixed side slide member having a first slide surface and fixed to the base body; and a rotary side slide member. A second insertion hole allows the shaft to pass therethrough is in the rotary side slide member. The shaft is fitted into the second insertion hole between the fixed side slide member and the blood supply mechanism. The second slide surface is slidable on the first slide surface in contact with the first slide surface by rotating together with the blood supply mechanism and the shaft A center of the core is at a position more to a +z direction side than a center (CM) of a permanent magnet.

Blood pump devices having improved rotary seals for sealing a hearing assembly supporting a rotor provided herein. Such rotary teals are particularly suited for use in blood pump devices that include rotors having cantilevered supported through a sealed mechanical bearing disposal outside a blood flow path of the device to avoid thrombus formation caused by blood contact with the bearing. The rotary seal can include a first and second face seal that are preloaded with a deflectable compliance member incorporated into the pump housing or a pair of magnets. Such rotary seals can instead or further utilize tight fitment between components or a bio-absorbable fill material to seal an interface between the rotor shaft and pump housing to seal the bearing assembly from fluid flowing through the pump.