Disclosed is a two-balloon perfusion catheter with adjustable spacing, comprising a first catheter (1, 11, 21, 31, 41, 51), a second catheter (2, 12, 22, 32, 42, 52), a proximal balloon (3, 13, 23, 33, 43, 53) fixed at a distal end of the first catheter (1, 11, 21, 31, 41, 51) and a distal balloon (4, 14, 24, 34, 44, 54) fixed at a distal end of the second catheter (2, 12, 22, 32, 42, 52). The first catheter (1, 11, 21, 31, 41, 51) is internally provided with a liquid injection cavity (112, 212, 312, 412, 512), an inflation cavity (111, 211, 311, 411, 511) passing through the first catheter (1, 11, 21, 31, 41, 51), and a cavity duct passing through the second catheter (2, 12, 22, 32, 42, 52). The second catheter (2, 12, 22, 32, 42, 52) is internally provided with an inflation cavity (121, 221, 321, 421, 521). The cavity duct extends in a coaxial direction of the catheter. The spacing between the proximal balloon (3, 13, 23, 33, 43, 53) and the distal balloon (4, 14, 24, 34, 44, 54) can be adjusted by moving the first catheter (1, 11, 21, 31, 41, 51) and the second catheter (2, 12, 22, 32, 42, 52) relative to each other.L'invention concerne un cathéter de perfusion à deux ballonnets à espacement réglable, comprenant un premier cathéter (1, 11, 21, 31, 41, 51), un second cathéter (2, 12, 22, 32, 42, 52), un ballonnet proximal (3, 13, 23, 33, 43, 53) fixé à une extrémité distale du premier cathéter (1, 11, 21, 31, 41, 51) et un ballonnet distal (4, 14, 24, 34, 44, 54) fixé à une extrémité distale du second cathéter (2, 12, 22, 32, 42, 52). Le premier cathéter (1, 11, 21, 31, 41, 51) est pourvu intérieurement d'une cavité d'injection de liquide (112, 212, 312, 412, 512), d'une cavité de gonflage (111, 211, 311, 411, 511) traversant le premier cathéter (1, 11, 21, 31, 41, 51), et d'un conduit de cavité traversant le second cathéter (2, 12, 22, 32, 42, 52). Le second cathéter (2, 12, 22, 32, 42, 52) est pourvu intérieurement d'une cavité de gonflage (121, 221, 321, 421, 5
