The 1st room (34) which possesses globose condition and the catheter which possesses the multilocular balloon (32) which includes the contiguity 2nd room (36) which in general possesses the cylindrical form body section to be expansion possible continually, therefore, in order to make opening expand with sutento which can be made to develop in ramification, while when being utilized, sutento being supported around outer circle of lateral branch opening, it can make expand sutento wall opening.
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