For my personal head canon I’ll assume it is, else hulk truly ks much weaker than in the comics.It wasn't even new tech - just one of the 'grenades' introduced in the first movie, delivered to the right place.
considering his regenerative powers, an internal explosion should be no more threat to hulk than a bullet in the heart. So my assumption is the tech “disconnects” his heart from his gamma powers that allows the damage to stick.