In-body monitoring camera system and support tube for in-body monitoring-camera-system

An in-body monitoring camera system, comprising:

• a support tube, one end part of which is able to be introduced into a body;
• an imaging portion which is arranged to be joined to the support tube inside the body;
• a joining portion which joins the imaging portion and the support tube;
• a first cable which is connected to the imaging portion and able to be led out to an outside of the body through the support tube;
• and
• a control system that is electrically connected to the first cable, and includes at least a display apparatus, wherein
• the joining portion has a recess shape corresponding to the one end part of the support tube, and a protrusion or a recess for mechanically fixing the end part of the support tube is provided in an inner wall of the joining portion, and
• the protrusion is a locking pawl.