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    • 1. 发明授权
    • Setscrewless connector assembly for implantable medical devices
    • 用于可植入医疗设备的无螺丝连接器组件
    • US5951595A
    • 1999-09-14
    • US852161
    • 1997-05-06
    • Sheldon B. MobergBuehl E. TruexAlfred D. Acken, deceasedClyde K. NasonWilliam H. Stutz, Jr.Edward Gene Rourke
    • Sheldon B. MobergBuehl E. TruexAlfred D. Acken, deceasedClyde K. NasonWilliam H. Stutz, Jr.Edward Gene Rourke
    • A61N1/375H01R13/52H01R24/58H01R17/18
    • H01R13/5224A61N1/3752H01R24/58H01R2107/00H01R2201/12Y10S439/909
    • A connector assembly mounted on an implantable cardiac stimulation device has an actuator mechanism for fixing and sealing electrical leads inserted into lead receptacles within the connector assembly without the use of setscrews. Fixing and sealing of the leads is accomplished by compressing resilient lead lock seals of O-ring shape, disposed in annular recesses, with lip portions of a plunger drawn toward the molded support by the actuator mechanism. In a first embodiment of the actuator mechanism, rotation of a cam actuator transversely journaled within the support, using a torque wrench or similar tool, moves a cam slide attached to the plunger through a fixed displacement between lock and unlock positions as an offset camming portion of the actuator engages the surfaces of a slot within the cam slide. In a second embodiment, constant-force compression of the lead lock seals by the plunger is provided by using a torque wrench to rotate a screw actuator having one end coupled to the plunger and an opposite threaded end received within a screw block transversely disposed within the support. In a third embodiment, a rotatable toothed pinion engages a toothed slot within a slidable rack to provide incremental advancement of the rack, and thereby stepped displacement and force, with a resulting increased resolution. In a fourth embodiment, compliance provided by either a spring formed within the cam slide, or a spring nut mounted thereon, prevents excessive force from being exerted on leads of larger diameter.
    • 安装在可植入心脏刺激装置上的连接器组件具有致动器机构,用于固定和密封插入到连接器组件内的引线插座中的电引线,而不使用固定螺丝。 引线的固定和密封是通过压缩环形形状的弹性引线锁定密封件来实现的,该密封件设置在环形凹槽中,其中柱塞的唇部通过致动器机构朝模制支撑件拉出。 在致动器机构的第一实施例中,使用扭矩扳手或类似工具横向安装在支撑件内的凸轮致动器的旋转使附接到柱塞的凸轮滑块在锁定和解锁位置之间通过固定位移移动,作为偏移凸轮部分 执行机构接合凸轮滑块内的槽的表面。 在第二实施例中,通过使用扭矩扳手来旋转具有联接到柱塞的一端的螺钉致动器以及容纳在横向设置在所述柱塞内的螺纹块内的相对的螺纹端,由柱塞提供引线锁定密封件的恒定力压缩 支持。 在第三实施例中,可旋转的齿形小齿轮与可滑动齿条内的齿槽接合,以提供齿条的增量前进,并由此产生阶梯式的位移和力,从而产生增加的分辨率。 在第四实施例中,由形成在凸轮滑块内的弹簧或安装在其上的弹簧螺母提供的顺应性防止过大的力施加在较大直径的引线上。