Are all cardiac devices battery operated?

Are all cardiac devices battery operated?

In this video, Dr. Aparna Jaswal, Cardiologist, Fortis Escorts Heart Institute tells us that the cardiac devices used are all battery operated. Types of cardiac devices: Pacemakers, Biventricular Pacemaker, Implantable Cardioverter Defibrillator (ICD). Currently, new technologies are still ongoing with respect to heart contractions can recharge the pacemakers.