Patent ID: 8100889

Claim:
A body-insertable apparatus which is to be introduced in a subject to perform at least one of input and output of a predetermined fluid to and from the subject, the apparatus comprising: a reservoir in which the predetermined fluid is stored, the reservoir being placed at one end in a longitudinal direction of the body-insertable apparatus; a first communicating channel having an opening at a first end of the first communicating channel the first end of the first communicating channel being open to an inside of the reservoir, the first communicating channel being extended in the longitudinal direction of the body-insertable apparatus and surrounded by the reservoir; a second communicating channel having an opening at a first end of the second communicating channel, the first end of the second communicating channel being open to an outside space of the body-insertable apparatus, the second communicating channel being extended in a direction substantially parallel to the first communicating channel, and the second communicating channel partially running parallel to the first communicating channel; a communication adjusting mechanism with a sheet member which covers openings of second ends of the first and second communicating channels; and a control mechanism which controls a communication state between the first communicating channel and the second communicating channel by using the communication adjusting mechanism, the control mechanism being placed at another end in the longitudinal direction of the body-insertable apparatus.