An endoscope with a very thin, flexible inserted portion intended for the visual examination and some treatment of coronary arteries, peripheral vessels, and intracardiac structures. It is inserted into the body through a surgically-created orifice during arterioscopy. Anatomical images are transmitted to the user through a fibreoptic bundle (e.g., a fused silica flexible rod that provides sharper images and greater strength). This device is intended to be used to examine arteries and arterial circulation; blood flow is normally blocked in the arteries by a balloon while a clear liquid is infused to flush away residual blood to provide a clear view. This is a reusable device.