US Patent 11298504 Medical device

A medical device is configured to treat a body cavity. The medical device includes a tubular sheath portion, a foreign substance capturing catheter configured to be movable inside the sheath portion, the foreign substance capturing catheter having a capturing portion configured to capture a foreign substance inside the body cavity, a treatment catheter configured to be movable inside the foreign substance capturing catheter, the treatment catheter having a treatment portion configured to treat the body cavity. The medical device is configured to be inserted into the body cavity in a state in which the treatment catheter is set inside the foreign substance capturing catheter and the foreign substance capturing catheter is set inside the sheath portion.