Journal: Scientific Reports
Article Title: Accuracy of the HeartMate 3 Left Ventricular Assist Device Flow Estimation
doi: 10.1038/s41598-025-03743-9
Figure Lengend Snippet: Hybrid Mock Circulatory Loop (HMCL) used for the measurement process. The hydraulic system is subjected to physiological pressures by using a control algorithm that adjusts the pneumatic proportional valves switching between vacuum network and pressurized network to achieve the desired pressure. The gear pump is used to balance the fluid level of left ventricular (LV) reservoir (left) and aortic (AO) reservoir (right). The HeartMate 3 inflow is introduced to the LV reservoir with its outflow connected to the AO reservoir. An RS232 based pump controller and a data acquisition system (DAQ) for pump parameters are in place. Modified after Bender et al. .
Article Snippet: The LVAD pump controller was replaced by an RS232 serial communication interface (MAX232, Texas Instruments Inc., USA) connected to the MicroLabBox digital input port, requests for pump data previously observed in the communication protocol were sent to the HM3 and responses containing the current pump parameters were recorded.
Techniques: Control, Modification