Patent attributes
A body-insertable apparatus including a balloon for storing a medical fluid in a capsule-like casing, and an injection needle including an elastic membrane. The body-insertable apparatus discharges the medical fluid due to contraction of the balloon, applies a discharge pressure of the medical fluid to the elastic membrane to expand the elastic membrane, and projects the injection needle from the casing due to the expansion of the elastic membrane. Further, the body-insertable apparatus has a channel forming unit for forming a channel connecting to the balloon and a channel connecting to the injection needle, and a communication adjusting mechanism. The communication adjusting mechanism adjusts a communicated state between the channels and, thereby controlling the start of medical-fluid discharge operation by the balloon.
