The present invention relates to a complex surgical device for carrying out an anastomosis in the intestine including: a— a protective device (5) comprising an anchor element consisting of a stent (1) and a flexible outer sheath (2), and b— an introducer (10) comprising at least a first deformable guide tube (12), characterized in that the downstream end of said outer sheath is connected to said first guide tube (12) or to a first connecting piece (11), said outer sheath (2) being folded inside said first deformable guide tube (12), said stent being held in radial compression inside said first deformable guide tube.