In-vivo camera device and in-vivo monitoring camera system

An in-vivo camera device comprising:

• an imaging unit that is introduced into a body;
• a support member that has a connection portion with a tubular instrument, of which one end is introduced into the body, at a front end side and has a joint portion with the imaging unit at a rear end side;
• and
• a cable that is connected to the imaging unit and passes through the support member wherein,
• the connection portion is formed such that a front end side is formed thinner than a rear end side,
• the support member is connected to the tubular instrument in a state in which the connection portion is fitted into the tubular instrument, and
• the support member has a stabilization structure for stabilizing connection with the tubular instrument,
• wherein the connection portion of the support member has a plurality of columnar parts being coaxial with each other and conforming to an inner diameter of the tubular instrument, and tapered parts spreading from rear ends of the respective columnar parts, as the stabilization structure.