Punching tool for constructing biological material aortic dissection model

The utility model discloses a punching tool for constructing a biological material aortic dissection model, the punching tool is of a sheet-shaped long structure, two ends of the punching tool are in smooth arc shapes, one end is a narrow end, the other end is a wide end, the width of a punching tool handle body is gradually reduced from the wide end to the narrow end, and the edge thickness of the punching tool is 0.5 mm-0. 7mm. The narrow end of a punching tool is inserted into the first gap of the dissection to punch towards the far end of the aorta, so that the aorta inner membrane (aorta inner membrane layer and a small amount of middle membrane layer) on the punching path is torn and separated from the aorta outer wall (aorta middle layer and aorta outer membrane), and the aorta dissection with the set length and width is manufactured; the handle body with the gradually-changed width is beneficial to expansion of a false cavity; the thickness of the edge of the punching tool ensures that the punching to