公开(公告)号：WO1996040345A1

公开(公告)日：1996-12-19

申请号：PCT/US1996004893

申请日：1996-04-09

Applicant: C.R. BARD, INC.

Inventor： C.R. BARD, INC. ,  BERTHIAUME, William, A.

IPC: A61M25/10

CPC classification number: A61M25/00 ,  A61M25/0169 ,  A61M25/10 ,  A61M2025/0175

Abstract: A dilatation catheter wherein the effective "over-the-wire length" is adjustable. The catheter includes an elongated inflation shaft having a longitudinal inflation lumen, an extension shaft disposed distal to the inflation shaft and through which the inflation lumen is continued, a balloon element disposed at the distal end of the extension shaft and in fluid communication with the inflation lumen, a guidewire shaft having a longitudinal guidewire lumen which extends from the distal end of the balloon member, through the balloon member and the extension shaft, to the proximal end of the extension shaft, and a telescoping portion. The telescoping portion comprising first and second telescoping tubes which are slidably mounted on the inflation shaft and the extension shaft. The first and second telescoping tubes are sized so that the first telescoping tube can be retracted into the second telescoping tube. The extension shaft is sized so that it can be retracted into the first telescoping tube. The effective "over-the-wire length" of the telescoping balloon catheter can be reduced by retracting the first telescoping tube and the extension tube into the second telescoping tube. In another embodiment, the telescoping portion comprises three telescoping tubes, which results in a greater reduction of the effective "over-the-wire length".

Abstract translation: 一种扩张导管，其中有效的“线上长度”是可调节的。 导管包括细长的充气轴，其具有纵向充气腔，延伸轴设置在充气轴的远侧并且充气腔持续通过该延伸轴，球囊元件设置在延伸轴的远端处并与膨胀流体连通 具有从球囊构件的远端延伸通过气囊构件和延伸轴的纵向导丝管的导丝轴到延伸轴的近端以及伸缩部分。 伸缩部分包括可滑动地安装在膨胀轴和延伸轴上的第一和第二伸缩管。 第一和第二伸缩管的尺寸使得第一伸缩管能够缩回到第二伸缩管中。 延伸轴的尺寸使得其可以缩回到第一伸缩管中。 可以通过将第一伸缩管和延伸管缩回到第二伸缩管中来缩小伸缩气囊导管的有效“超线长度”。 在另一个实施例中，伸缩部分包括三个伸缩管，这导致有效的“线上长度”的更大的减小。