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公开(公告)号：USD288478S
公开(公告)日：1987-02-24
申请号：US622983
申请日：1984-06-21
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公开(公告)号：USD292229S
公开(公告)日：1987-10-06
申请号：US622987
申请日：1984-06-21
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公开(公告)号：US4236529A
公开(公告)日：1980-12-02
申请号：US13129
申请日：1979-02-21
申请人： Richard L. Little
发明人： Richard L. Little
CPC分类号： A61N1/057
摘要： A tined lead that includes an insulated electrical conductor having one end electrically connectable to a pulse generator and an opposite end extending into one end portion of a metal electrode in electrically conductive relationship therewith, the opposite end portion of the electrode having a rounded tip for contacting body tissue, an axial bore through the tip surface to reduce the electrical conductive surface area of the tip and cross bores intersecting the axial bore remote from the tip, nonconductive, integrally joined plastic plugs filling said bores, and a nonconductive molded plastic member circumferentially surrounding the electrode, other than the tip, and the portion of the conductor that is connected to the electrode; the molded plastic member having a plurality of circumferentially spaced tines extending outwardly in a direction away from the tip. The tines are finned shaped and are flattened to be more flexible about axes parallel to the electrode axis than about axes perpendicular thereto.
摘要翻译： 一种定子引线，其包括绝缘电导体，其一端可电连接到脉冲发生器，并且相对端延伸到与其导电关系的金属电极的一个端部中，电极的相对端部具有用于接触的圆形尖端 身体组织，穿过尖端表面的轴向孔，以减少尖端的导电表面积和与远离尖端的轴向孔相交的十字孔，并且填充所述孔的不导电的，整体连接的塑料塞，以及周向环绕的非导电模塑塑料构件 除了尖端之外的电极和连接到电极的导体的部分; 所述模制塑料构件具有沿远离所述尖端的方向向外延伸的多个周向间隔开的齿。 齿形为翅片形状并且被平坦化，以便平行于电极轴线的轴线相对于垂直于其的轴线更为柔性。
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公开(公告)号：US5408546A
公开(公告)日：1995-04-18
申请号：US160410
申请日：1993-12-02
CPC分类号： G01L9/0076 , G02B6/241
摘要： The present invention provides an improved method of manufacturing a pressure transducer of the optical fiber type and an improved pressure transducer of that type, the method including the steps of providing a housing having a greatest interior dimension less than twice the diameter of the optical fibers, deforming the housing by applying pressure thereto such that an interior dimension of the housing along one axis thereof exceeds twice the diameter of the optical fibers, and releasing the pressure on the housing so that the housing substantially resumes its undeformed state and fixedly traps the optical fibers at a preselected location within the housing. An improved pressure transducer of the optical fiber type has a housing receiving the distal end of an optical path, the housing including an aperture, and a pressure sensitive membrane disposed in covering relation to the aperture under tension. The aperture has a substantially nonlinear circumference, preferably in the shape of a circle that was laid on the outer cylindrical surface of the housing as a template for the aperture.
摘要翻译： 本发明提供了一种制造光纤类型的压力传感器的改进方法和一种改进的这种类型的压力传感器，该方法包括以下步骤：提供具有小于光纤直径两倍的最大内部尺寸的壳体， 通过向外壳施加压力使壳体变形，使得壳体沿其一个轴线的内部尺寸超过光纤直径的两倍，并且释放壳体上的压力，使得壳体基本上恢复其未变形的状态并且固定地捕获光纤 在房屋内的预选位置。 光纤类型的改进的压力传感器具有容纳光路的远端的壳体，所述壳体包括孔，以及在张力下与所述孔相对地设置的压敏膜。 该孔具有基本上非线性的圆周，优选地以圆形的形状，其被放置在壳体的外圆柱形表面上，作为孔的模板。
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公开(公告)号：US4214804A
公开(公告)日：1980-07-29
申请号：US945113
申请日：1978-09-25
申请人： Richard L. Little
发明人： Richard L. Little
CPC分类号： A61N1/056
摘要： A pacemaker bipolar lead assembly, for being electrically connected to a pulse generator to transmit electrical pulses into a heart, that includes a pair of wire conductor spring coils electrically connected to conductor pins, the first coil being electrically connected to a tip electrode and the second coil being electrically connected to a ring electrode. An internal ring having an outwardly facing groove is press fitted within the ring electrode with the second coil extending through the groove to retain the second coil in electrical conducting relationship with the ring electrode. Electrical insulation is provided on the coils and the conductor pins except for one end portions of the pins, the part of the second coil that is in electrical contact with the ring electrode and the juncture of the first coil with the tip electrode. An insulated portion of the first coil extends through the internal ring.
摘要翻译： 一种起搏器双极引线组件，用于电连接到脉冲发生器以将电脉冲传输到心脏中，其包括电连接到导体引脚的一对导线弹簧线圈，所述第一线圈电连接到尖端电极，第二线圈电连接到尖端电极， 线圈电连接到环形电极。 具有向外的凹槽的内圈压配合在环形电极内，第二线圈延伸穿过凹槽，以将第二线圈保持与环形电极的导电关系。 在线圈和导体引脚之间提供电绝缘，除了引脚的一个端部，第二线圈的与环形电极电接触的部分和具有尖端电极的第一线圈的接合部分。 第一线圈的绝缘部分延伸穿过内环。
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公开(公告)号：US08019559B1
公开(公告)日：2011-09-13
申请号：US11807819
申请日：2007-05-30
CPC分类号： G01F1/663 , G01F1/662 , G01F1/667 , G01F1/74 , G01F25/003
摘要： A flow meter and method for measuring flow in liquids which may have entrained bubbles or foreign matter. The meter performs alternate transit time and Doppler measurements. The transit time measurements are used to calculate flow so long as they are successful. If the transit time measurements are not successful, the Doppler measurements are used.
摘要翻译： 一种用于测量液体中流动的流量计和方法，其可能携带气泡或异物。 仪表执行交替运行时间和多普勒测量。 运输时间测量用于计算流量，只要它们成功。 如果通行时间测量不成功，则使用多普勒测量。
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公开(公告)号：US4997424A
公开(公告)日：1991-03-05
申请号：US333253
申请日：1989-04-05
申请人： Richard L. Little
发明人： Richard L. Little
CPC分类号： B26D3/001 , A61M25/0668 , A61M2025/0675
摘要： This invention relates to an introducer slitter for slitting an introducer tube portion having, for example, a catheter extending therethrough and into a body vessel while the introducer tube is moved rearwardly relative to the catheter to facilitate separating the introducer from the catheter without having to slide the introducer tube portion over the proximal end of the catheter. The slitter includes an arcuate section having an inner peripheral wall that extends arcuately through an angle of at least about 180.degree. and is adapted to abut against the catheter, and a nose portion that extends between the catheter and introducer tube portions as the introducer is moved axially rearwardly relative to the catheter, a handle section extending radially outwardly of the arcuate section and a radially extending cutting edge for engaging the introducer tube portion for slitting the introducer tube portion as the introducer is pulled rearwardly relative to the slitter.
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公开(公告)号：US4271846A
公开(公告)日：1981-06-09
申请号：US32661
申请日：1979-04-23
申请人： Richard L. Little
发明人： Richard L. Little
CPC分类号： A61N1/0587
摘要： A tool for installing a body implantable electrode of a lead that includes an electrode holder assembly having a clamp for releasably clamping an electrode mounting head and a clamp operator conductor carrier assembly rotatably mounted by the holder assembly for operating the clamp from a head clamping position to a head release position. The carrier assembly has a chamber and a bore for holding part of the lead conductor.
摘要翻译： 一种用于安装引线的主体可植入电极的工具，其包括具有用于可释放地夹持电极安装头的夹具的电极保持器组件和由保持器组件可旋转地安装的夹具操作者导体载体组件，用于将夹具从头夹紧位置操作到 头部释放位置。 载体组件具有用于保持引线导体的一部分的腔室和孔。
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公开(公告)号：US5313957A
公开(公告)日：1994-05-24
申请号：US682661
申请日：1991-04-08
申请人： Richard L. Little
发明人： Richard L. Little
CPC分类号： A61B5/6851 , A61B5/02154 , A61B5/03 , G01L9/0076
摘要： A physiological pressure transducer assembly mounted on a transvenously-insertable guide wire is disclosed. The multiple coils of the guide wire define an elongated tubular passage within which fiber optic leads are contained for the transmission of light signals to a pressure transducer. A window or aperture is cut along a restricted portion of the length of the guide wire coil to provide a pressure-sensing aperture over which an elastic, pressure-sensitive membrane is positioned. The coils of the guide wire adjacent to the sensing aperture are joined together for increased rigidity along the length of the pressure transducer assembly, as by soldering or brazing. A separate, cylindrical housing, preferably of molded plastic, is wholly contained within the reinforced length of the guide wire. The proximal end portions of fiber optic sending and receiving leads or paths are received and contained within the housing in a predetermined arrangement and geometry defining a light-transmitting gap. Light transmission across the gap is controllably attenuated by deflection of the pressure-responsive membrane in response to pressure changes within a person's body, and the attenuated light signals are transmitted to an external control unit as indicative of pressure changes. A reflector positioned on an end cap closing the proximal end of the elongated guide wire is utilized to reflect signals from the signal transmitting, fiber optic lead or path to the proximal end portion of a return signal, fiber optic lead or path.
摘要翻译： 公开了一种安装在可横向插入的导丝上的生理压力传感器组件。 引导线的多个线圈限定细长的管状通道，光纤引线被容纳在该细长的管状通道内，用于将光信号传输到压力传感器。 沿着导丝线圈的长度的限制部分切割窗口或孔，以提供压力感测孔，弹性的压敏膜定位在该压力感测孔上。 与传感孔相邻的导线的线圈通过焊接或铜焊连接在一起，以沿着压力传感器组件的长度增加刚性。 单独的圆柱形壳体，优选地由模制塑料构成，整体包含在导丝的加强长度内。 光纤发送和接收引线或路径的近端部分以规定的布置和几何形状容纳在壳体内，限定了透光间隙。 通过响应于人体内的压力变化的压力响应膜的偏转可以可靠地衰减穿过间隙的光透射，并且衰减的光信号作为压力变化的指示传输到外部控制单元。 位于封闭细长导丝的近端的端盖上的反射器用于将来自信号传输光纤引线或路径的信号反射到返回信号，光纤引线或路径的近端部分的信号。
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公开(公告)号：US5005584A
公开(公告)日：1991-04-09
申请号：US461178
申请日：1990-01-05
申请人： Richard L. Little
发明人： Richard L. Little
IPC分类号： A61B5/0215 , A61B5/03 , G01L9/00
CPC分类号： G01L9/0076 , A61B5/02154 , A61B5/03
摘要： A fiber optic transducer utilizing a flexible membrane to transduce pressure by interrupting light transmission between fiber optic paths in a catheter or guide wire carrier by misaligning the paths or by interposing a blocking opaque shutter between the paths. Calibration data may be carried by the individual transducer in machine readable form.
摘要翻译： 一种光纤传感器，其利用柔性膜通过中断光导管或引导线载体中的光纤路径之间的光透射来转换压力，通过不对准路径或通过在路径之间插入阻挡的不透明快门。 校准数据可以由机器可读形式的单个换能器承载。
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