I have sewn through fingers several times... but my most serious injuries have been with the rotary cutter. I've cut off the end of the same pinkie finger, twice. I mean, the tip of the finger, completely off and lying on the table! I'm pretty good and experienced with wound care (from hubby's many surgeries) so I tended the wounds myself, and actually got the fingertips to fuse back on, with blood flow and everything! It takes a long time before you can feel anything in the fingertip again, but eventually even that comes back. Our bodies are amazing!
Not looking forward to that ever happening again! I try to be very careful now, and not cut too fast.