Disclosed is a control system having a processor configured to control a plurality of electromagnets to assist heart contractions and expansions based on input received from an electrocardiogram electrode and blow flow sensors.

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 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.

An inflow cannula for an implantable blood pump, the inflow cannula defining an inlet at a proximal end, an opposite distal end, and a lumen therebetween, the inflow cannula being configured to constrict the lumen

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. 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 (PCI). 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.

A mechanical circulatory assist system includes a continuous-flow pump and a controller. The pump is implantable to assist blood flow from the left ventricle to the aorta The controller is operable to control a rotation speed of the pump over an operational cycle. The operational cycle includes a first segment over which the ventricular assist device is operated at first rotation speed, a second segment over which the rotation speed of the ventricular assist device is decreased from the first rotation speed to a second rotation speed, a third segment over which the ventricular assist device is operated at the second rotation speed, and a fourth segment over which the rotation speed of the ventricular assist device is increased from the second rotation speed. A contraction of the left ventricle that opens and closes the native aortic valve occurs during the third segment.

A temporary, removable mechanical circulatory support heart-assist device has at least two propellers or impellers. Each propeller or impeller has a number of blades arranged around an axis of rotation. The blades are configured to pump blood. The two propellers or impellers rotate in opposite directions from each other. The device can be configured to be implanted and removed with minimally invasive surgery.

The invention concerns a control device for controlling a blood flow of an intravascular blood pump for percutaneous insertion into a patient's blood vessel, the blood pump comprising a pump unit with a drive unit for driving the pump unit and configured to convey blood from a blood flow inlet towards a blood flow outlet, wherein the control device is configured to operate the blood pump in a selectable zero-flow control mode, wherein a blood flow command signal is selected, and the control device comprises a first controller and a second controller, wherein the first controller is configured to control the blood flow by adjusting a speed command signal for the drive unit, and the second controller is configured to control a drive speed of the drive unit.

Apparatus for determining opening of an aortic valve of a biological subject, the apparatus including an electronic processing device that determines a pump speed of a ventricular assist device that is assisting cardiac function of the biological subject, analyses the pump speed to determine a pump speed indicator at least partially indicative of changes in pump speed and uses the pump speed indicator to determine an opening indicator indicative of opening of the aortic valve.

A cardiac assist device is provided. The cardiac assist device may comprise a structure surrounding at least a portion of a heart. The cardiac assist device may comprise an inner cup enclosing at least a portion of the structure. The cardiac assist device may comprise an outer cup enclosing at least a portion of the inner cup. The outer cup may comprise an opening. Gas may be conducted into a space between the outer cup and the inner cup, using a pump, to cause a first motion of the structure, associated with a first rotation of a first portion of the heart in a first direction. The gas may be conducted from the space to outside of the outer cup, using the pump, to cause a second motion of the structure, associated with a second rotation of the first portion of the heart in a second direction.

A blood pump incorporating a rotary pump such as a rotary impeller pump implantable in fluid communication with a ventricle and an artery to assist blood flow from the ventricle to the artery. The device may include a pump drive circuit supplying power to the pump, one or more sensors for sensing one or more electrophysiological signals such as subcutaneous, pre-cordial ECG signals and a signal processing circuit connected to the sensors and to the pump drive circuit. The signal processing circuit is operative to detect the sensor signals and control power supplied to the pump from the pump drive circuit so that the pump may run in a normal sinus rhythm mode, with a varying speed synchronized with the cardiac cycle. When an ischemic or myocardial infarction condition is detected, the pump drive circuit may also run the pump in an ischemia or myocardial infarction mode different from the normal sinus rhythm mode.