As a result , TFTD patency of the fallopian tubes for coaxial catheter was restored in 50 ( 78 % ) of 64 tubes with bilateral total occlusion , in 238 ( 93 % ) of 254 with partial occlusion of the bilateral , in 14 ( 58 % ) of 24 total unilateral occlusion and 26 ( 92 % ) of 28 with partial unilateral occlusion .