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1. 发明授权

US5314462A Positive fixation device 失效
标题翻译：正固定装置
公开(公告)号：US5314462A
公开(公告)日：1994-05-24
申请号：US888492
申请日：1992-05-27
申请人： Ronald W. Heil, Jr. , Wickham, Jr. Robert W. , Bruce H. Kenknight
发明人： Ronald W. Heil, Jr. , Wickham, Jr. Robert W. , Bruce H. Kenknight
IPC分类号： A61N1/05 , A61N1/39 , A61N1/00
CPC分类号： A61N1/0573
摘要： An implantable defibrillation electrode including a conductive distal end portion and a non-conductive proximal end portion is provided with at least a major portion of the length of the distal end portion having a preconfigured shape and being resiliently deformable into a generally straight condition. The distal end portion includes distal and proximal ends and at least one of those ends is hollow and has hook structure shiftably supported therein for movement longitudinally thereof from a retracted position at least substantially contained within the hollow end and an extended position at least substantially fully outwardly projected from the hollow end. Spring structure is provided for yieldingly biasing the hook structure from the extended position toward the retracted position and axial thrust developing structure is slidingly telescoped through the proximal end portion and operatively associated with the hook structure for exerting an axial thrust thereon from the terminal end of the proximal end portion in order to effect shifting of the hook structure from the retracted position to the extended position.
摘要翻译：包括导电远端部分和非导电近端部分的可植入除颤电极设置有远端部分的长度的至少大部分具有预先配置的形状并且可弹性变形为大致直线的状态。远端部分包括远端和近端，并且这些端部中的至少一个端部是中空的并且具有可移动地支撑在其中的钩结构，用于使其纵向移动，从至少基本上容纳在中空端部内的缩回位置和至少基本上完全向外的延伸位置从中空端突出。提供弹簧结构用于使挂钩结构从延伸位置朝向缩回位置有效地偏置，并且轴向推力显影结构通过近端部分滑动伸缩并与钩结构可操作地相关联，从而从其上端施加轴向推力近端部分，以便实现钩结构从缩回位置到延伸位置的移动。

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