Patent ID: 8182414

Claim:
An endoscope system comprising: a first image pickup device including at least one image pickup unit that is capable of picking up an image of an object; a second image pickup device including at least one image pickup unit, the second image pickup device being different from the first image pickup device; a retaining instrument being provided for retaining the second image pickup device in a body cavity, the retaining instrument including a camera cable that is connected to the second image pickup device and transmits an image pickup signal obtained by the second image pickup device, and a wire connected to the second image pickup device; a signal processing device that is provided outside the body cavity and processes image pickup signals obtained by the first image pickup device and the second image pickup device; a display device that displays an image signal outputted from the signal processing device, and a fixing device for fixing the second image pickup device on an inner surface of a body wall, the fixing device including a needle section for penetration from an outside of the body cavity, wherein the second image pickup device has a hole, and the second image pickup device is fixed to the body wall by engagement of the needle section and the hole.