Many years ago I had the sewing machine needle go right thru my finger nail. No problems - just had to have a tetanus shot. But just recently my 15 yr old grandson who was taking a sewing class, had a machine needle go thru his finger and it broke off in his finger. It took a trip to the ER, where they couldn't get it out, and then a trip into surgery the next morning to finally cut it out. He was quite a trooper, tho!! He loves to sew. It did put a damper on his sewing, piano playing, etc for a week or more, tho.
judyjo