The picture shows the preparations for changing a stoma plate.
A stoma is an artificially created intestinal outlet where the intestines are diverted through the abdominal wall.
In a stoma, the intestines are attached to the abdominal wall by a terminal or double-way stoma with sturue. The stool discharges involuntarily via the stoma into a bag affixed to the abdominal wall.
Further video: Stoma-Plattenwechsel zu Hause