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    • 57. 发明授权
    • Medical infusion device with a source of controlled compliance
    • 具有受控依从性的输液装置
    • US06537268B1
    • 2003-03-25
    • US09335936
    • 1999-06-18
    • Scott R. GibsonPeter C. LordEric M. LorenzenSusan M. McConnellJohn F. GrayRobert W. Bosley
    • Scott R. GibsonPeter C. LordEric M. LorenzenSusan M. McConnellJohn F. GrayRobert W. Bosley
    • A61K922
    • A61M5/14276A61M2209/045
    • Embodiments of medical infusion pumps are provided that include structural elements for providing sources of compliance within a fluid path within the pump. Some preferred embodiments provide implantable infusion pumps with compliance positioned between an exit port of a pumping mechanism and an outlet (e.g. an opening in a catheter) of the infusion pump. Other embodiments provide compliance in fluid path in proximity to entrance port of the pumping mechanism. Insertion of compliance in a flow path that is down stream of the pumping mechanism may aid in minimizing negative effects associated with attempting to force fluid through a restricted flow path that is further down-stream, such as that offered by a catheter or other outlet component. Insertion of compliance before the pumping mechanism may aid in reducing negative effects associated with an up stream restricted flow path, such as that which might be offered by a rigid filter located between the reservoir and the pumping mechanism. Several structural components, assemblies, or configurations may be used as sources of compliance. For example, compressible structures (e.g. pillows, drums) are used within a side port of the infusion pump. The compressible structures may quickly distort to accommodate for a large impulse of fluid into the flow path that can not otherwise be readily dealt with. The compression, in turn, results in a restoring force being exerted that returns the structure substantially to its original volume so as to slowly force fluid from the flow path.
    • 提供了医用输液泵的实施例,其包括用于在泵内的流体路径内提供顺应性源的结构元件。 一些优选的实施方案提供了植入式输注泵,其具有定位在泵送机构的出口与输液泵的出口(例如导管中的开口)之间的顺应性。 其他实施例提供了靠近泵送机构的入口的流体路径中的顺应性。 在泵送机构下游的流动路径中插入顺应性可以有助于最小化与试图迫使流体进一步向下流动的受限流动路径相关联的负面影响,例如由导管或其他出口部件 。 在泵送机构之前插入顺应性可以有助于减少与向上流限制的流动路径相关联的负面影响,例如位于储存器和泵送机构之间的刚性过滤器可能提供的负面影响。 可以使用几种结构组件,组件或配置作为遵守来源。 例如,在输注泵的侧端口内使用可压缩结构(例如,枕头,鼓)。 可压缩结构可以快速变形以适应大流量的流体进入流动路径,否则不能容易地处理。 压缩又导致施加的恢复力,使得结构基本上返回到其原始体积,以便缓慢地迫使来自流动路径的流体。
    • 58. 发明授权
    • High strength connector design for passive fixation pacing lead
    • 高强度连接器设计用于被动固定起搏导线
    • US06183305B2
    • 2001-02-06
    • US09205966
    • 1998-12-04
    • Phong D. DoanEric M. Lorenzen
    • Phong D. DoanEric M. Lorenzen
    • H01R2404
    • A61N1/3752H01R13/625Y10S439/909
    • A connector assembly located at the proximal end of an elongated lead body includes first and second electrical contacts, each attached to a respective one of at least two conductors. An interlocking construction positively joins the first and second electrical contacts and maintains a fixed axial spacing therebetween. The first connector includes a connector pin having a head portion at an extremity thereof and an integral and coaxial tail portion and the second connector includes a connector ring coaxial with and telescopingly received on the tail portion. An electrically insulative male joint member integral with the tail portion is selectively lockingly engageable with a female joint member integral with the connector ring. Diametrically opposed knob members project radially from an outer peripheral surface of the male joint member and slidably engage a pair of diametrically opposed longitudinal slots in an integral axial sleeve extending proximally from the second electrical contact, the longitudinal slots terminating at a pair of oppositely extending circumferential slots. The electrical contacts are positively joined by axially aligning the connector pin and the connector ring while spaced apart, then advancing on axis the tail portion of the connector pin toward the connector ring so that the outer peripheral surface of the male joint member is fittingly engaged with the inner peripheral surface of the axial sleeve and so that the knob members are slidably engaged with the longitudinal slots, then rotating the tail portion so that the knob members are slidably engaged with the circumferential slots.
    • 位于细长引线主体的近端处的连接器组件包括第一和第二电触点,每个电触头连接到至少两个导体中的相应一个。 互锁结构正确连接第一和第二电触点并且在它们之间保持固定的轴向间隔。 第一连接器包括具有在其末端处的头部部分和整体并且同轴的尾部部分的连接器销,并且第二连接器包括与尾部同轴并可伸缩地接收在该尾部上的连接环。 与尾部一体的电绝缘的公接头构件可选择性地与与连接器环一体的阴接头构件可锁定地接合。 径向相对的手柄构件从阳接头构件的外周表面径向伸出并且在从第二电接触件向近侧延伸的一体的轴向套筒中可滑动地接合一对径向相对的纵向狭槽,纵向狭槽终止于一对相对延伸的周向 插槽 通过使连接器销和连接环轴向对准而间隔开,然后在连接器销的尾部的轴线上朝着连接环方向前进,使得阳极接合件的外周表面与 轴向套筒的内周表面,并且使得把手构件与纵向狭缝可滑动地接合,然后旋转尾部,使得把手构件与周向槽滑动接合。