shown in fig1 and 17 fig1 22 show the components and the steps necessary to manufacture balloon assembly 16 of the embodiments shown in fig1 12 for purposes of this description the method of manufacture will be described as proceeding from the proximal to the distal end of coiled support member 28 as shown in fig1 22 an uninflated length of flexible tube 30 is inserted at the proximal end of coiled support member 28 mandril 170 is positioned above and adjacent to the outer surface of coiled support member 28 tube 30 is threaded through a side of coiled support member 28 as shown in fig1 tube 30 is wrapped in a distal direction around mandril 170 and coiled support member 28 and threaded between adjacent coils of coiled support member 28 slight tension is then applied to tube 30 to secure tube 30 under upper extent 28a of a coil of coiled support member 28 tube 30 is repeatedly looped in the fashion just described to form a series of inflatable side by side loops 46 while fig2 shows tube 30 passing between every other coil of coiled support member 28 spacings of tube 30 may vary depending on the size of the tubing or the coiled support member used the distal end of tube 30 is then secured to the distal end of coiled support member 28 to seal distal end 38 of tube 30 retainer 32 is then threaded through the length of coiled support member 28 between the bottom side of each tube loop 46 and lower.