A catheter pump includes a cannula and an impeller system. The cannula has an inlet zone with a first maximum outer diameter, an outlet zone with a second maximum outer diameter and a blood flow channel extending between the inlet zone and the outlet zone. The first maximum outer diameter is greater than the second maximum outer diameter, and the impeller system has a rotatable impeller body operable to convey blood from the inlet zone to the outlet zone. The impeller body may be axially spaced from the cannula in a separated position.

A blood flow assist system can include an impeller assembly including an impeller shaft and an impeller on the impeller shaft, a primary flow pathway disposed along an exterior surface of the impeller. The system can include a rotor assembly at a proximal portion of the impeller shaft. A secondary flow pathway can be disposed along a lumen of the impeller shaft. During operation of the blood flow assist system, blood can be pumped proximally along the primary flow pathway and the secondary flow pathway. The system can include a sleeve bearing distal the impeller. The system can include a drive unit having a distal end disposed distal a proximal end of the second impeller. The drive unit comprising a drive magnet and a drive bearing between the drive magnet and the impeller assembly.

A catheter pump assembly is provided. The catheter pump assembly includes a proximal portion, a distal portion, a catheter body having a lumen extending along a longitudinal axis between the proximal and distal portions, an impeller disposed at the distal portion, and a stator disposed at a downstream location of the impeller to straighten flow downstream from the impeller. The stator is collapsible from a deployed configuration to a collapsed configuration.

A catheter pump assembly is provided. The catheter pump assembly includes a proximal portion, a distal portion, a catheter body having a lumen extending along a longitudinal axis between the proximal and distal portions, an impeller disposed at the distal portion, and a stator disposed at a downstream location of the impeller to straighten flow downstream from the impeller. The stator is collapsible from a deployed configuration to a collapsed configuration.

Various aspects of the present disclosure are directed towards apparatuses, systems, and methods that may include a blood pump. The blood pump may include a flexible distal tip having a distal end segment, an intermediate segment, and a proximal segment, each segment having various shapes and/or hardness. The blood pump may include a cannula and a can element coupling the flexible distal tip to the cannula.

Improvements to intracardiac devices such as intracardiac blood pump assemblies, and associated methods. In one example, the present technology includes systems and methods for pacing the heart, and/or performing cardiac ablation using electrodes mounted on a portion of the intracardiac device. In another example, the present technology includes systems and methods for detecting mural thrombi in a patient's heart using electrical sensors or ultrasonic phased arrays mounted on the intracardiac device. In another example, the present technology includes systems and methods for detecting tissue changes and reactions in heart tissue during treatment using one or more temperature sensors. In another example, the present technology includes an improved distal tip for use with an intracardiac device. In another example, the present technology includes systems and methods for maintaining an intracardiac device in a desired position within a patient's heart using magnets or ultrasonic phased arrays mounted on the intracardiac device.

A minimally invasive circulatory support platform that utilizes an aortic stent pump or pumps. The platform uses a low profile catheter-based techniques and provides temporary and chronic circulatory support depending on the needs of the patient. Further described is a wirelessly powered circulatory assist pump for providing chronic circulatory support to, for example, heart failure patients. The platform and system are relatively easy to place, have higher flow rates than existing systems, and provide improvements in the patient's renal function.

Systems and methods for packaging an optical sensor assembly. An optical sensor assembly for use in a blood pump assembly comprises a visor affixed to a pump housing of the blood pump assembly. A support jacket is in contact with an inner surface of the visor, and defines a cavity in which an optical sensor is disposed. Silicone gel is introduced into the cavity, where it cures. Silicone gel within the cavity protects the optical sensor, and the support jacket prevents the overflowing of the gel and contamination of the visor.

A percutaneous circulatory support system includes a percutaneous circulatory support device including an impeller disposed within an impeller housing, the impeller being rotatable relative to the impeller housing to cause blood flow through the impeller housing. The system further includes a cannula coupled to the impeller housing, a cannula delivery tool configured for receiving and radially compressing the cannula, the cannula delivery tool having a proximal portion positioned adjacent a tapered portion, and a distal portion positioned adjacent the tapered portion.

Various aspects of the present disclosure are directed towards apparatuses, systems, and methods that include a percutaneous circulatory support device. The percutaneous circulatory support device is used with a guidewire and may include a housing having a blood outlet aperture. The blood outlet aperture may include a channel that is configured to receive and support the guidewire.