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    • 9. 发明授权
    • Steerable obturator
    • 导向闭孔器
    • US07056314B1
    • 2006-06-06
    • US10452244
    • 2003-05-30
    • Joseph J. FlorioGene A. BornzinKevin L. MorganSheldon WilliamsJanice Barstad
    • Joseph J. FlorioGene A. BornzinKevin L. MorganSheldon WilliamsJanice Barstad
    • A61M25/01
    • A61M25/0152A61B17/3478A61B2017/003A61M25/0136A61M25/0141A61M25/0147A61M2025/015A61M2025/0161
    • An omnidirectionally steerable obturator facilitates the delivery of the distal tip of an introducer sheath into the coronary sinus of a heart. The steerable obturator comprises an obturator body extending longitudinally along a central axis, the obturator body being configured to be received by the introducer sheath. The obturator body further has a flexible, deflectable distal end section terminating in a rounded distal tip. An actuator, controllable from a proximal end of the obturator body, is operatively associated with the flexible distal end section of the obturator body to cause deflection of the flexible distal end section of the obturator body in at least one selected direction to facilitate passage of the distal end section of the obturator body and the distal tip of the introducer sheath into the coronary sinus of the heart.The obturator body is preferably configured to be received in a close fit within at least the tip of the introducer sheath. More preferably, the distal end of the obturator body has an outer surface and the fit between the outer surface of the obturator and at least the tip of the introducer sheath comprises substantially a line-to-line fit.
    • 全向可操纵的闭孔器有利于将导引鞘的远侧末端递送到心脏的冠状窦。 可操纵的闭孔器包括沿着中心轴线纵向延伸的闭孔器,所述封闭器主体构造成由引导器护套容纳。 闭孔体还具有终止于圆形远端尖端的柔性的,可偏转的远端部分。 从闭塞体的近端可控制的致动器与闭塞体的柔性远端部分可操作地相关联,以使闭塞体的柔性远端部分沿至少一个选定的方向偏转,以便于通过 闭塞体的远端部分和导引鞘的远侧末端插入心脏的冠状窦。 闭孔体优选构造成在至少引导器护套的尖端内紧密配合。 更优选地,闭孔体的远端具有外表面,并且填塞物的外表面与引导器护套的至少末端之间的配合基本上包括线对齐配合。
    • 10. 发明授权
    • Lead with polymeric tubular liner for guidewire and stylet insertion
    • 带有用于导丝和通孔插入的聚合物管状衬垫
    • US06456890B2
    • 2002-09-24
    • US09797531
    • 2001-02-28
    • Anne M. PiancaGene A. BornzinChristopher R. JenneyKevin L. MorganSheldon Williams
    • Anne M. PiancaGene A. BornzinChristopher R. JenneyKevin L. MorganSheldon Williams
    • A61N100
    • A61N1/056
    • An implantable lead for electrical stimulation of the body includes an elongated multi-lumen tube with a distal tip electrode having a longitudinally extending central bore. A cable conductor is received in one lumen of the multi-lumen tube for electrical connection to the tip electrode and an elongated polymeric tubular liner having a coefficient of friction in the range of 0.01 to 0.20 is received in another lumen of the multi-lumen tube generally aligned with the bore of the distal tip electrode for freely receiving a guidewire through the tubular liner and through the bore of the distal tip electrode. An electrically conductive proximal pin is attached to the multi-lumen tubing distant from the tip electrode and, in one embodiment, the cable conductor and the proximal end of the polymeric tubular liner are attached to the proximal pin. Initially, the guidewire is implanted into the body along a desired trajectory. With the polymeric tubular liner inserted, first the distal tip electrode, then the remainder of the multi-lumen tube, are slid onto the guidewire such that the guidewire slidably advances within the polymeric tubular liner. Thereupon, the multi-lumen tube is advanced along the guidewire until a desired site is achieved and the guidewire is removed from the body and the multi-lumen tube. In another embodiment, the distal tip electrode has no central bore but the elongated polymeric tubular liner is axially aligned with the distal tip electrode for freely receiving a stylet which is attached with the distal tip electrode.
    • 用于电刺激身体的可植入引线包括细长的多腔管,其具有具有纵向延伸的中心孔的远端尖端电极。 电缆导体容纳在多腔管的一个内腔中,用于电连接到尖端电极,并且具有在0.01至0.20范围内的摩擦系数的细长聚合物管状衬垫被容纳在多腔管的另一内腔中 通常与远侧末端电极的孔对准,用于自由地接收穿过管状衬垫的导丝并且穿过远端尖端电极的孔。 导电近端针连接到远离尖端电极的多腔管,并且在一个实施例中,电缆导体和聚合物管状衬垫的近端附接到近端针。 最初,导线沿着期望的轨迹植入体内。 在插入聚合物管状衬垫的情况下,首先将远侧末端电极,然后多腔管的其余部分滑动到导丝上,使得导丝可在聚合物管状衬垫内滑动地前进。 于是,多腔管沿着导丝线前进,直到达到所需的位置,导线从主体和多管腔管中取出。 在另一个实施例中,远端尖端电极没有中心孔,但是细长的聚合物管状衬套与远端尖端电极轴向对齐,用于自由接收与远侧末端电极连接的探针。