Final Design

The SAVEDx system works through the use of 4 main components. The Hub housing, the adapter, the myRIO and tablet combination, and the signal conditioning PCB. The Hub housing houses the myRIO, PCB, and batteries for the system while taking in the Atrial and Ventricular Epicardial wires and the spliced EKG signals. The spliced EKG signals are obtained from the use of the adapter, so that the bedside monitor EKG is not affected during normal use. The outputs of the hub are the cables that connect to the temporary pacemaker which allow for the packing of the patient. The signals obtained from the epicardial wires and the EKG adapter are then amplified and conditioned using the signal conditioning PCB. From the PCB, the conditioned signals enter the myRIO device which runs a LABVIEW software that is able to condition the data further. The myRIO then connects to a tablet through the National Instruments DataDashboard app that allows for the three waveforms to be displayed. The waveforms are shown continuously on the tablet display, which allow for a quicker diagnosis than before. The SAVEDx system is also safe and does not allow for any current to reach the patient. The SAVEDx is predicted to be widely used among children’s hospitals once the device is commercialized as the device can save time and lives.

When testing the SAVEDx system, it was verified that the signal processing worked as intended. The adapter was able to splice off the signals from the electrodes and input the signals obtained to the SAVEDx system without disrupting the EKG signals seen on the bedside monitor. The signals then go to the designed circuit which was able to amplify the ECG signals obtained from the patients via electrodes as well as filter out the noise. The signal processing of the atrial and ventricular waveforms is unknown due to time constraints and limitations on testing methods. However, the AEG/VEG signals are around the same voltage as the EKG signals, so it is assumed that the current circuit will condition the AEG/VEG signals similarly.

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