| http://www.w3.org/ns/prov#value | - References which describe such structures include U.S. Pat. No. 4,608,984, in which an outer balloon element of a highly elastic material such as latex having a deflated circumference less than the diameter of the associated catheter is disclosed for use in refolding the inner working balloon after it has been inflated and deflated; and U.S. Pat. Nos. 5,447,497, 5,358,487 and 5,342,305, in which a
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