| 摘要 |
PROBLEM TO BE SOLVED: To provide a balloon catheter which facilitates passage through a tortuous anatomical structure such as distal coronary arteries and maintains the ability to withdraw from the tortuous anatomical structure without failure.SOLUTION: A balloon catheter 100 includes: an outer shaft having a hypotube 220 and a monolithic single-layer distal outer member 230; a balloon 140 in fluid communication with inflation lumens 200, 201, 202; and a monolithic inner tubular member 240 having a guidewire lumen 210 defined therethrough. A proximal part 231 of the monolithic single-layer distal outer member is coupled to the hypotube. The balloon has a proximal balloon shaft 145 coupled to a distal end 232 of the monolithic single-layer distal outer member. The monolithic inner tubular member extends distally from a proximal port in the monolithic single-layer distal outer member through the balloon to form a tip 270.SELECTED DRAWING: Figure 1 |
