Patent ID: 8038646

Claim:
A body-insertable apparatus that is introduced into a body and performs predetermined fluid in the body, comprising: a storage chamber formed inside an outer circumferential member of the body-insertable apparatus and storing the predetermined fluid; a flow generating unit that has an expansion and contraction film which contracts with changes in the shape of the expansion and contraction film, and generates a flow state of the predetermined fluid based on a negative pressure emerged between the storage chamber and the body based on the contracting of the expansion and contraction film; and a control unit that controls the contracting operation of the expansion and contraction film; a first communication pipe communicating with the storage chamber or the inside of the expansion and contraction film, one end of the first communication pipe being opened to the storage chamber or the inside of the expansion and contraction film; and a second communication pipe communicating the first communication pipe with the outside of the body-insertable apparatus, one end of the second communication pipe being opened to the outside of the body-insertable apparatus, an other end of the second communication pipe being opened to an other end of the first communication pipe; wherein the flow generating unit has a communication adjusting mechanism for adjusting a communication state between the first communication pipe and the second communication pipe according to control of the control unit, and the communication adjusting mechanism includes: a sheet holding substrate through which the first communication pipe and the second communication pipe pass, and including a concave region to which the other end of the first communication pipe and the other end of the second communication pipe are opened; a sheet member that covers the concave region and directly controls the communication state between the other end of the first communication pipe and the other end of the second communication pipe, the other end of the first communication pipe and the other end of the second communication pipe being provided at one side of the sheet member; and a pressing member that is provided at an other side of the sheet member, and applies a predetermined pressing force against the sheet member so as to block the communication state between the other end of the first communication pipe and the other end of the second communication pipe according to the control of the control unit.