Abstract: Methods for operating a pump are provided, the pump comprising a rotor for conveying fluids, wherein the volume flow rate through the pump and the pressure difference across the pump is determined, wherein at least one first operating parameter and in particular a second operating parameter of a first group of operating parameters are detected and, depending on the value of the first and in particular also the value of a second operating parameter of the first group, the volume flow rate through the pump and the pressure difference across the pump is determined from detected values of the operating parameters, either from the first group of operating parameters, or values of another set of operating parameters, in particular at least one additional operating parameter, are taken into consideration in order to determine the volume flow rate and the pressure difference across the pump.

Abstract: A heart pump arrangement including a heart pump and a control apparatus connected thereto, where the control apparatus has a first connector element of a first connection device, and including an intermediate plug-in module, which has a second connector element, which is detachably connectable to the first connector element, wherein the intermediate plug-in module has a second connection device, which is non-detachable or which is detachable within a framework of a second connection, for connection to an electrical power source, and additionally a third connection device, which is non-detachable or which is detachable within a framework of a third connection, for connection to a data processing device, in particular a terminal. By means of the connection possibilities of the intermediate plug-in module on the secondary side, incorrect connections to connected batteries, power supply units, or other apparatuses to be connected are minimised.

Abstract: Methods for operating a pump are provided, the pump comprising a rotor for conveying fluids, wherein the volume flow rate through the pump and the pressure difference across the pump is determined, wherein at least one first operating parameter and in particular a second operating parameter of a first group of operating parameters are detected and, depending on the value of the first and in particular also the value of a second operating parameter of the first group, the volume flow rate through the pump and the pressure difference across the pump is determined from detected values of the operating parameters, either from the first group of operating parameters, or values of another set of operating parameters, in particular at least one additional operating parameter, are taken into consideration in order to determine the volume flow rate and the pressure difference across the pump.