A device for stretching regions of tissue has at least one first plate-like body and at least one second plate-like body. At least one pulling thread joins the plate-like bodies. One tensioning device is arranged on at least one of the plate-like bodies and is connected to the pulling thread for applying a tensile force to the pulling thread. A guidance serves for guiding the at least one pulling thread during a movement of the at least two plate-like bodies towards one to another.
