My DH was a meatcutter for years and was always cutting his fingers. The best treatment for sliced fingers he ever got was from an ER Doc that told him to soak it in soapy (dish soap) hot water for as long as he could stand to keep his hand in the water. We had to keep changing the water to keep it hot and he kept it in there for several hours. Took out all the soreness and it healed very quickly. That particular time he had sliced the end off one of his fingers with a lunchmeat slicer.