Check out this medical device powered by a Game Boy Advance

A Twitter user found himself perplexed today when he opened an older electrocardiogram measurement instrument and found the components belonged to a Game Boy Advance.
The instrument is made by German company Medical Imaging Electronics and uses a wave produced by the ECG to electronically control a separate recording or imaging apparatus. At first look, it seems like any standard medical device. When opened, it’s revealed that the device’s screen and electronic parts belong to a Game