There are lots of hoops to jump through to get to use cadavers for one's work, but the act of pumping blood itself isn't particularly of concern to any agencies

There are lots of hoops to jump through to get to use cadavers for one's work, but the act of pumping blood itself isn't particularly of concern to any agencies. Here is one example paper: https://pubmed.ncbi.nlm.nih.gov/29023350/ https://pubmed.ncbi.nlm.nih.gov/29023350/