Cardiac Spike/Ring Spike

After a good friend experienced an attempted S/A attack in a concert venue where guns, knives, and pepper spray were not allowed, I decided to make this. It's a fully 3d printed non-metallic self-defense spike. It's designed to withstand multiple impacts with the goal of either disabling or deterring an attacker enough for the victim to get away. It will put holes in the drywall and dents in the oak board. I plan on doing a ballistic gel and pig carcass penetration test eventually.  Print with 100% infill lattice if possible.