Commonly artificial organs are generated though stem cell technology. E.g. IPSC-technology. Cardiomyocytes (Heart cells) spontaneously beat and have been used to create organoids. To further define beating - 'spontaneously electrical contracting' but not 'pumping'.
Cell physiology methods are applied for the investigation of cardiac features. E.g. Contractile force, calcium cycling or electric signals are commonly done.
However, none have contained chambers. All cardiomyocyte organoids are 'balls of cells'.
Has a beating cardiomyocyte organoid with 'chamber/s' been generated? if not, why?