US Patent 12114669 Bung driller with a bung holder

A bung driller is provided for cutting free the anal opening and rectum end of an animal carcass by cutting around the anal opening and rectum end. The bung driller includes a longitudinal, drilling tube with an open cutting end, a mandrel centralized inside the drilling tube, and a bung holder located inside of the drilling tube and surrounding the mandrel. Contamination of skin surface and meat surface by fecal matter is a problem when cutting free the anal opening and rectum end of a carcass. The bung holder located inside of the drilling tube provides a holding force to the skin surface around the anal opening and makes a volume wherein fecal matter escaping from the intestine is caught.