公开(公告)号：US09283101B2

公开(公告)日：2016-03-15

申请号：US13797636

申请日：2013-03-12

Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.

Inventor： Daniel H. Shumer ,  Michael L. Green ,  Patrick C Saxton

IPC: A61F2/966 ,  A61F2/01 ,  A61F2/95

CPC classification number: A61F2/966 ,  A61F2/95 ,  A61F2002/011 ,  A61F2002/9517 ,  A61F2250/0019 ,  A61F2250/0021

Abstract: Catheter including a pressure chamber defined by proximal and distal seals and inner and outer tubular members. An actuator member, moveable between first and second positions, is disposed within the pressure chamber. Fluid introduced into the pressure chamber applies a force on the actuator member to move the actuator member toward the second position. A lock mechanism, disposed between inner and outer tubular members, includes a latch having an engaged condition preventing movement of the outer tubular member relative the inner member and a disengaged condition allowing movement the outer member. The latch is shifted to the disengaged condition when the actuator member is moved to the second position. With the actuator member in the second position and the latch in the disengaged condition, fluid introduced through the fluid flow port and into the pressure chamber applies a force on the proximal seal to urge the outer tubular member proximally.

Abstract translation: 导管包括由近端和远端密封件以及内部和外部管状构件限定的压力室。 可在第一和第二位置之间移动的致动器构件设置在压力室内。 引入压力室的流体在致动器构件上施加力以将致动器构件朝向第二位置移动。 设置在内部管状构件和外部管状构件之间的锁定机构包括具有接合状态的闩锁，其防止外部管状构件相对于内部构件的运动和允许移动外部构件的脱离状态。 当致动器构件移动到第二位置时，闩锁转移到分离状态。 当致动器构件处于第二位置并且闩锁处于分离状态时，通过流体流动端口引入并进入压力室的流体在近侧密封件上施加力以向近侧推动外部管状构件。