Same thing happend to me, but with an exacto knife, and it was on my left pointer finger, i cut to the bone, and the doc said i scratched my bone a bit aswell, it took 7 kneedles and 2 stitches, the first stitch wasnt frozen (hurt like a mother fawkir)
It actually healed rather quickly, and three days before i was to go and get the stitches out i removed them in inglish class with my buddies leatherman.

redneck style