“Big Splinter That Won't Come Out?”

I have a splinter that won't come out on the bottom of my foot. I accidentally stepped on a piece of broken-off wicker basket and got a splinter from it. The splinter is deeply embedded. I had my partner try to pull it out with tweezers for an hour last night, no luck. It's to embedded to get a good grip to grab it and pull it out. Earlier today, I soaked my foot in warm water with Epsom salts, still in there. Just now I wiped it down with hydrogen peroxide and then tried to pull it out with a needless syringe hoping the suction would pull it out. It didn't work.