A minimally invasive circulatory support platform that utilizes an aortic stent pump or pumps is described. The platform uses a low profile catheter-based techniques and provides temporary and chronic circulatory support depending on the needs of the patient. Also described is a catheter-based temporary assist pump to treat patients with acute decompensated heart failure and provide circulatory support to subjects undergoing high risk percutaneous coronary intervention. Further described is a wirelessly powered circulatory assist pump for providing chronic circulatory support for 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.

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.

A method for treating a patient may include establishing an anastomosis between a pulmonary artery and an aorta; and pumping blood from the pulmonary artery to the aorta when the pulmonary artery has a pressure lower than or equal to a pressure of the aorta.

In one embodiment of the present invention, an implantable blood pump includes a housing defining a flow path, a rotor positioned within the flow path, and a motor including a stator, positioned outside of said housing, the stator including a length of silver wire, wherein the silver wire is not positioned within a hermetically sealed compartment once the blood pump is ready for implantation into a patient in need thereof. The present invention may also include a method of implanting the implantable blood pump including the step of implanting the blood pump within the patient and within or adjacent to the vasculature.

In various embodiments, a catheter pump is disclosed herein. The catheter pump can include an elongated catheter body having a distal portion including an expandable cannula having an inlet and an outlet. An impeller assembly can include an impeller shaft and one or more blades. The impeller blades can draw blood into the expandable cannula when rotated. Further, an expandable support can have a mounting portion. The mounting portion can have a cylindrical member disposed on the impeller shaft and can include an enlarged distal portion at a distal end of the impeller shaft and a nose member. Further, a re-sealable member can be disposed in the enlarged distal portion of the cylindrical member and can have a path through the re-sealable member through which a guidewire can be positioned. Further, the nose member can have an aperture distal of the re-sealable member for passage of the guidewire.

A catheter assembly for use in a percutaneous heart pump includes a cannula housing defining an interior space, an impeller disposed within the interior space defined by the cannula housing, and a flexible atraumatic tip positioned distal of the cannula housing. A guidewire is coupled to the flexible atraumatic tip and extends proximally from the flexible atraumatic tip. The guidewire extends at least partly along an exterior of the cannula housing or at least partly within the interior space defined by the cannula housing between the impeller and the cannula housing.

The present disclosure provides a catheter pump system including a catheter assembly having a proximal end and a distal end. The catheter assembly includes an elongate body extending between the proximal end and the distal end. The catheter body further includes a distal portion disposed at the distal end, said distal portion comprising a bent portion, said bent portion configured to enable a steering of said catheter assembly though an artery.

In various embodiments, a catheter pump is disclosed herein. The catheter pump can include an elongated catheter body having a distal portion including an expandable cannula having an inlet and an outlet. An impeller assembly can include an impeller shaft and one or more blades. The impeller blades can draw blood into the expandable cannula when rotated. Further, an expandable support can have a mounting portion disposed on the impeller shaft distal of the impeller body. The mounting portion can have a cylindrical member disposed on the impeller shaft and can include an enlarged distal portion having an inner diameter greater than the enlarged diameter at a distal end of the impeller shaft. Further, a re-sealable member can be disposed in the enlarged distal portion of the cylindrical member and can have a path through the re-sealable member through which a guidewire can be positioned.

A septum for use in a catheter pump is provided herein. The septum includes a first elastomeric septa disc. The first elastomeric septa disc is punctured. The puncture forms an aperture in the first elastomeric septa disc. The aperture is passable by a guidewire.

Systems, devices, and methods for improving wireless power transmission are disclosed herein. A method of powering an implantable ventricular assist device with an external charging device includes receiving a signal indicative of a change in a property of a deformable coil of the resonant circuit. A performance property of the deformable coil is determined based on the signal. An adjustment to a tuning of the resonant circuit is identified based on the performance property of the deformable coil. The resonant circuit is tuned according to the adjustment to the tuning of the resonant circuit. The resonant circuit is driven to transmit power to a secondary coil electrically coupled with the implantable ventricular assist device to power the ventricular assist device.