| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a technique capable of acquiring a high quality ultrasonic image of internal portion in a minimally-invasive manner.SOLUTION: A body part of an ultrasonic medical device includes an ultrasonic vibrator and inserted into a lumen of an analyte. First and second closing parts are inserted into the lumen so as to be able to substantially close the lumen with the change in external dimension. The first closing part is arranged on a side opposite to an insertion port with respect to the body part and provided with an opening which can be shielded on the surface on the insertion port side. The second closing part is arranged on the side of the insertion port with respect to the body part and provided with a path penetrating therethrough. A fluid supply part enlarges the external dimension by supplying the fluid in a state where a tip is arranged inside the first closing part through the opening and enlarges the external dimension of the second closing part by supplying the fluid in a state where the tip is arranged in the path. The fluid supply part supplies the fluid to the space between the first closing part and the second closing part.</p> |
