Patent ID: 8579883

Claim:
A body-insertable apparatus comprising: a capsule-type casing which is adapted to be swallowed into a subject; a discharge balloon which possesses a self-contraction force and stores a medical agent; a projecting balloon which connects with the discharge balloon; at least one injection needle being connected with the projecting balloon; a valve which opens and closes between the discharge balloon and the projecting balloon; and, a controller which controls, by opening and closing the valve, an injection operation that injects the medical agent by a contraction of the discharge balloon, a projection operation that projects the at least one injection needle to the outside of the capsule-type casing by an expansion of the projecting balloon when the medical agent flows into the projecting balloon from the discharge balloon, and a storing operation that stores the at least one injection needle inside the capsule-type casing by a contraction of the projecting balloon.