Abstract: The disclosure in particular relates to a ventricular assist device for implantation into a lumen of a blood vessel, comprising an impeller fixed to a rotor shaft, wherein the impeller is configured to rotate around a longitudinal axis of the rotor shaft; a drive unit comprising a magnetic motor configured to cause rotation of the impeller around to the longitudinal axis; a first active magnetic bearing configured to bear a first end section of the rotor shaft relative to the drive unit; a second active magnetic bearing configured to bear a second end section of the rotor shaft relative to the drive unit; and a control unit configured to control the magnetic motor, the first active magnetic bearing and the second active magnetic bearing.

Abstract: Artificial muscle device and method of manufacturing the same for the treatment or control of an organ such as the heart. The artificial muscle device comprises artificial polymer actuators or fibers that can work together to form the artificial muscle structure. The artificial fibers are electrothermally active contractile polymers capable of various characteristics, including increased contractile forces. The artificial actuators are knittable or weavable into patterns and shapes to create unique artificial muscles that can be shaped into implantable devices.

Abstract: Cells with the capability to generate excitation in a heart muscle tissue are used in this invention as biological cardiac pacemakers. That is done by suspending the dissociated cells and injecting them at a suitable position into the heart of a patient. The suspension can contain medicinal additives.