An ostomy accessory for an intestinal stoma of a mammal patient. The accessory comprises an insertion portion adapted to be inserted into an natural intestinal stoma of an ostomy and an evacuation portion adapted to evacuate fecal matter from said insertion portion and from an intestine connected to the intestinal stoma of the patient. The intestine is formed to an ostomy reservoir, and the insertion portion is adapted to be inserted into the ostomy reservoir created by the intestine. The insertion portion is further adapted to cause the intestine to open for flow of the fecal matter out of the intestinal stoma when the insertion portion is positioned into the stoma. The accessory further comprises a wireless transmitter adapted to communicate with a wireless receiver. The wireless transmitter is adapted to co-operate with and open an artificial closure acting on the outside of the intestine, when the insertion portion is positioned adjacent to or in indirect contact therewith, to allow the fecal matter to be evacuated through the intestine and stoma using the ostomy accessory, upon a wireless signal sent from the wireless transmitter.