A medical apparatus which is introduced into a body 101 includes an image pickup unit 50 that picks up an image of the interior of the body 101, a communication cable 43 that sends/receives a signal to/from an external device 5, an electric terminal section 61 disposed at an end section of the communication cable 43, a drip-proof cap 60 attached so as to cover the electric terminal section 61, a locking section 67 provided at the drip-proof cap 60 that locks a puncture needle 4 for pulling the communication cable 43 introduced into the body 101 out of the body, and a dissection section 66 provided at the drip-proof cap 60 that dissects a body wall 102 tissue when the cable wire 43 is pulled out.
