| 摘要 |
Catheter includes an outer shaft member (100) having a proximal section (120) and a distal outer member (230). The outer shaft has an inflation lumen (200,201,202) defined therethrough. A balloon (140) is in fluid communication with the inflation lumen and has a proximal balloon shaft (145), a proximal cone portion (144), a working length (143), a distal cone portion (142), and a distal balloon shaft (141). Catheter also includes a monolithic inner tubular member (240) extending from a midshaft member (520) through the distal outer member and through the balloon to form a tip (270). The distal balloon shaft has an inner diameter (1546) and comprises a distal seal portion (1547) coupled to the inner tubular member and a proximal portion (1548) free of attachment to the inner tubular member. The length (1548) of the proximal portion of the distal balloon shaft is at least about two times the inner diameter of the distal balloon shaft. Methods of making a catheter are also provided. |
