Device for the treatment of constricted ducts in human bodies

摘要

This invention is directed to a system for implanting a device to open constrictions in corpeal conduits, which comprises (a) an elongated tubular member and (b) a spatial spiral of elongate axial extension wound of thin wire and having attachment means at each end, said spiral being positioned on and concentric to said elongated tubular member, said spiral being in a constricted condition such that its lateral profile is smaller than it would be if said spiral were not constricted.