Abstract: Catheter blood pumps that include an expandable pump portion. The pump portions include a collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers. The collapsible scaffold and/or an elongate member extending proximally from the pump portion may include portions of differing radial stiffness or flexibility.

Abstract: Intravascular blood pumps and methods of use. The blood pump include a pump portion that includes a collapsible blood conduit defining a blood flow lumen between an inflow and an outflow. The pump portion includes a distal collapsible impeller axially spaced from a proximal collapsible impeller, at least a portion of each of the distal and proximal collapsible impellers disposed between the inflow and the outflow.

Abstract: 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.

Abstract: Catheter blood pumps that include collapsible blood conduits and one or more collapsible impellers. The catheter blood pumps include an outflow and an expandable flow diverter disposed in an outflow region. The expandable flow diverters can be completely proximal to a proximal end of the collapsible blood conduit.

Abstract: Catheter blood pumps that include an expandable pump portion. The pump portions include a collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers.

Abstract: A system for inserting a collapsible blood pump into a patient. In some embodiments, the system includes an introducer, the introducer comprising an introducer hub and an introducer sheath extending distally from the introducer hub, the introducer sheath comprising an introducer sheath lumen, the introducer hub comprising a hub connector and a distal hub lumen surrounding a proximal end of the introducer shaft; and a transfer tool comprising a transfer sheath, the transfer sheath comprising a transfer sheath lumen having a diameter substantially equal to a diameter of the introducer sheath lumen and a transfer tool connector adapted to connect to the hub connector, a distal portion of the transfer sheath extending into the distal hub lumen when the transfer tool connector is connected to the hub connector.

Abstract: Intravascular blood pumps systems and methods of use are provided. The blood pump system includes a catheter portion having a distal blood pump with a cantilevered collapsible impeller. The blood pump includes sections of increased stiffness and sections of increased flexibility. The blood pump is designed and configured to bend at a distal tip, a central section, and in a proximal catheter shaft, while maintaining stiffness in the inlet and outlet. Collectively the pump is designed and configured to maintain tip gap between the impeller and the blood conduit without requiring any structures in the blood conduit distal to the impeller assembly.

Abstract: Catheter blood pumps that include an expandable conduit coupled to at least one hub shaped to promote smooth blood flow. In some examples, the at least one hub includes non-metallic configuration and the struts comprise a metallic configuration (e.g., nitinol). The hub can include one or more layers, including a combination of Chronoflex and Pebax.

Abstract: Catheter blood pumps that include an expandable conduit coupled to at least one hub shaped to promote smooth blood flow. In some examples, the at least one hub includes non-metallic configuration and the struts comprise a metallic configuration (e.g., nitinol). The hub can include one or more layers, including a combination of Chronoflex and Pebax.

Abstract: Systems and methods are adapted for treating the carotid artery. The systems include interventional catheters and blood vessel access devices that are adapted for transcervical insertion into the carotid artery. Embodiments of the systems and methods can be used in combination with embolic protection systems including blood flow reversal mechanisms, arterial filters, and arterial occlusion devices.

Abstract: Intravascular blood pumps and methods of use. The blood pump include a pump portion that includes a collapsible blood conduit defining a blood flow lumen between an inflow and an outflow. The pump portion includes a distal collapsible impeller axially spaced from a proximal collapsible impeller, at least a portion of each of the distal and proximal collapsible impellers disposed between the inflow and the outflow.

Abstract: 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.

Abstract: Catheter blood pumps that include an expandable pump portion. The pump portions include a collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers.

Abstract: Systems and methods are adapted for treating the carotid artery. The systems include interventional catheters and blood vessel access devices that are adapted for transcervical insertion into the carotid artery. Embodiments of the systems and methods can be used in combination with embolic protection systems including blood flow reversal mechanisms, arterial filters, and arterial occlusion devices.

Abstract: Catheter blood pumps that include an expandable pump portion. The pump portions include a collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers.

Abstract: Catheter blood pumps that include an expandable pump portion. The pump portions include an collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers.

Abstract: Catheter blood pumps that include an expandable pump portion. The pump portions include a collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers. The pump portion may also include a blood mover that is adapted to move blood to reduce stagnation, and is separate from the impeller.

Abstract: Catheter blood pumps that include an expandable pump portion. The pump portions include a collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers.

Abstract: Catheter blood pumps that include an expandable pump portion. The pump portions include a collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers. The collapsible scaffold and/or an elongate member extending proximally from the pump portion may include portions of differing radial stiffness or flexibility.

Abstract: Catheter blood pumps that include an expandable pump portion. The pump portions include a collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers. The collapsible scaffold may include portions of differing radial stiffness based on location of the one or more impellers therein.