FREDDIE FISTULA SKILLS TRAINER0230 Freddie Fistula Skills Trainer was developed to provide clinicians with a realistic aid to facilitate instruction, practice, and management of open abdominal wounds with active fistulas. The Freddie Fistula Skills Trainer incorporates a realistic feeling soft abdomen with an open abdominal wound showing exposed intestines with gutters on all sides, a stoma and also a drainage tube. Three separate fistulas are present in the abdominal wound area: