The EVAHEART Left Ventricular Assist System is composed of implantable and external components.

The implantable components are a Blood Pump, an Inflow Cannula, and an Outflow Graft. A pump cable or driveline passes percutaneously through the patient’s skin and connects the Blood Pump to the Controller.

The external components are the Controller with CS System, power sources, Emergency Controller, Outer Belt, External Monitor, and Battery Charger.

Implantable components

Blood Pump

The primary component of the EVAHEART System is the Blood Pump. The System uses a centrifugal blood pump to generate blood flow and pressure in a patient with compromised left ventricular function.

The Pump consists of an impeller positioned within the blood pump chamber, mounted on a shaft, and driven by a motor. The Pump is connected to the Controller by a percutaneous driveline.

The speed of the Pump can be adjusted to generate flows as much as 14 liters per minute, depending on the patient’s dynamic state. For example, when the impeller is rotating at 2200 rpm, the System can produce a flow rate of 8 lpm with a pressure head (the pressure difference between pump inlet and outlet) of approximately 90 mmHg.

To reduce the risk of thrombosis, blood-contacting surfaces of the pump housing, the impeller, and both inner and outer surfaces of the Cannula are coated with MPC, a commercially developed coating by NOF Corporation of Japan.

Inflow Cannula and Outflow Graft

The EVAHEART Blood Pump is connected to the patient via the Inflow Cannula and the Outflow Graft.

The Inflow Cannula is inserted into the apex of the left ventricle, affixed to the surface via a sewing cuff, and then connected to the Pump.

The Outflow Graft, connected to the Pump, is then anastomosed to the ascending aorta.