please don't read if "squeamish" or you just finished dinner..
I can feel your pain. Really.
In my "fledgling" days of becoming a toolmaker, I was hammering a bearing into an aluminum housing, well...hammer/punch slipped severing the tendons clean in a finger. (Yep, should have used an arbor in a press. Won't make that mistake again..) during the surgery, they "wired" my tendons around the bone & tied the wire off at the top of the finger using what looked like a shirt button as a "washer". Was in a cast & splint for quite a while. Time passed & it was healing. Off the shop floor & into drafting...
One day I caught the wire in a towel pulling it half way around my finger (not through) & freaked out, thinking I will need another surgery...
Visited my hand surgeon in his office & he asked to see the finger, casually holding my arm, he reached into a desk drawer & pulled out a small pair of needle nose pliers. Grabbed the end & it was out. Didn't even feel a thing.
Geez. I coulda' done that...
Seriously, we all think things like this won't happen in the "home" shop, but they do. Wear your safety glasses at ALL times, no loose clothing, jewelry, ETC. You should know the rules. (Read the manual..)
In my case, a lack of judgement & skill. My own fault.
Finger all better & no problems thanks to other craftsmen (in their fields).
John