Surgical and medical apparatus, devices and other appliances, namely magnetic, preferably curved or ring shapes, objects to be places in the human body by operation under the abdomen skin for use in the surgical and/or medical treatment of colostomy, ileostomy or other ostomy patients or for use by such patients themselves who have undergone a colostomy, ileostomy or other ostomy operation, as well as magnetic sealing devices for the closing of the artificial opening in the patient's body caused by the ostomy operation, parts and fittings to the goods mentioned, including colostomy-, ileostomy- and other ostomy bags, cushion discs, interchangeable filters