The invention generally relates to improved medical blood pump devices, systems, and methods. For example, blood pumps may be provided that include a housing defining a blood flow path between an inlet and an outlet. A rotor may be positioned in the blood flow path. A motor stator may be driven to rotate the rotor to provide the blood flow through the pump. Axial and/or tilt stabilization components may be provided to increase an axial and/or tilt stabilization of the rotor within the blood flow path. In some embodiments, biasing forces are provided that urge the rotor toward a bearing component. The biasing force may be provided by adjusting drive signals of the motor stator. Additionally, or alternatively, one or more magnets (e.g., permanent/stator magnets) may be provided to bias the rotor in the upstream and/or downstream direction (e.g., toward a bearing (chamfer, step, conical), or the like).

A blood pump includes an impeller assembly housing; and an impeller assembly disposed within the impeller assembly housing. The impeller assembly includes an impeller having a main body, at least one impeller blade extending outwardly therefrom, and a skirt disposed around at least a portion of the main body. At least a portion of the at least one impeller blade is disposed between the main body and an inner surface of the skirt.

Intravascular blood pumps systems and methods of use. The blood pump system includes a catheter portion having a distal blood pump with one or more distal collapsible impellers. The system can include a clean purge fluid pathway to carry clean fluid distally to the blood pump and a purge fluid return pathway to carry return fluid proximally into an external motor and out a proximal end of the motor, and optionally to a waste reservoir.

An apparatus for a heart of a patient having a cardiac assist device adapted to be implanted into the patient to assist the heart with pumping blood. The apparatus has a sensor adapted to be implanted into the patient. The sensor in communication with the cardiac assist device and the heart which measures native volume of the heart. Alternatively, the sensor monitors the heart based on admittance while the cardiac assist device. Alternatively, the sensor monitors the heart based on impedance.

An apparatus for a heart of a patient having a cardiac assist device adapted to be implanted into the patient to assist the heart with pumping blood. The apparatus has a sensor adapted to be implanted into the patient. The sensor in communication with the cardiac assist device and the heart which measures native volume of the heart. Alternatively, the sensor monitors the heart based on admittance while the cardiac assist device. Alternatively, the sensor monitors the heart based on impedance.

A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing and rotatably supported in the pump casing by a bearing so as to be rotatable about an axis of rotation. The impeller has blades for conveying blood from the blood flow inlet to the blood flow outlet. The bearing comprises at least one stationary bearing portion coupled to the pump casing and having a stationary bearing surface that faces radially outwards. The bearing further comprises a rotating bearing surface interacting with the stationary bearing surface to form the bearing, wherein the rotating bearing surface faces radially inwards and is formed on an exposed radially inner edge of the blades. The blades are designed to draw blood deposit on the stationary bearing surface in a radially outward direction.

A percutaneous circulatory support device includes an impeller housing and a primary impeller disposed within the impeller housing. The primary impeller is rotatable relative to the impeller housing to cause blood to flow through the percutaneous circulatory support device. The device further includes a counter impeller disposed within the impeller housing.

The invention generally relates to improved medical blood pump devices, systems, and methods. For example, blood pumps may be provided that include a housing defining a blood flow path between an inlet and an outlet. A rotor may be positioned in the blood flow path. A motor stator may be driven to rotate the rotor to provide the blood flow through the pump. Axial and/or tilt stabilization components may be provided to increase an axial and/or tilt stabilization of the rotor within the blood flow path. In some embodiments, biasing forces are provided that urge the rotor toward a bearing component. The biasing force may be provided by adjusting drive signals of the motor stator. Additionally, or alternatively, one or more magnets (e.g., permanent/stator magnets) may be provided to bias the rotor in the upstream and/or downstream direction (e.g., toward a bearing (chamfer, step, conical), or the like).

A blood pump includes an impeller assembly housing; and an impeller assembly disposed within the impeller assembly housing. The impeller assembly includes an impeller having a main body, at least one impeller blade extending outwardly therefrom, and a skirt disposed around at least a portion of the main body. At least a portion of the at least one impeller blade is disposed between the main body and an inner surface of the skirt.

Transcatheterly implantable mammalian body conduit intralumenal device and lumen wall anchor assembly. Anchor includes: wire network, connector positioning wires having a secured and a released position, and a connector disposed at end of each wire. Anchor has: a compact-secured-configuration, an expanded-secured-configuration, an expanded-released-configuration. When the anchor is in the expanded-secured-configuration, the wire network exerts a force on conduit lumen wall and the connector positioning wires are the in secured position. When the anchor is in the expanded-released-configuration, the connector positioning wires are in the released position, and do not obstruct fluid flow axially through conduit. Device includes an interconnector that allows for the releasable interconnector of the connectors thereto. Device and anchor assembly can be explanted from the conduit. Or, device can be released from the anchor at the implantation site and only the device explanted with the anchor remaining within the conduit.