HELICAL GUIDEWIRES AND RELATED SYSTEMS

    公开(公告)号:US20210138203A1

    公开(公告)日:2021-05-13

    申请号:US17038095

    申请日:2020-09-30

    Abstract: In accordance with some implementations, various embodiments of a guidewire or catheter having an elongate core with a helical section are provided. In accordance with one implementation, a guidewire is provided. The guidewire includes a core wire having a proximal end, a distal end and is defined by an outer surface between the proximal end and the distal end of the core wire. The core wire has a centerline that traverses the length of the core wire from the proximal end to the distal end of the core wire. The centerline is located approximately at the center of mass along the core wire within the outer surface of the core wire. Preferably, the core wire has a substantially straight proximal portion and a helically curved segment located distally with respect to the proximal portion. The centerline of the core wire is substantially straight along the straight proximal portion, and, the centerline is helically curved along the helically curved segment. The disclosure similarly provides a catheter having the aforementioned attributes.

    ELECTROMAGNETIC RESONANT CIRCUIT SLEEVE FOR IMPLANTABLE MEDICAL DEVICE

    公开(公告)号:US20070038287A1

    公开(公告)日:2007-02-15

    申请号:US11419276

    申请日:2006-05-19

    Abstract: A medical device enables effective magnetic resonance imaging inside a lumen of a medical device. The medical device includes a plurality of conductive traces formed on a substrate. The conductive traces form an inductive-capacitance circuit or a resistive-inductive-capacitance circuit. The inductive-capacitance circuit or resistive-inductive-capacitance circuit is tuned to a frequency associated with magnetic resonance imaging, an operating frequency associated with a magnetic resonance imaging scanner, a harmonic of an operating frequency associated with a magnetic resonance imaging scanner, or a sub-harmonic of an operating frequency associated with a magnetic resonance imaging scanner.

    Electromagnetic interference immune pacing/defibrillation lead

    公开(公告)号:US20060271145A1

    公开(公告)日:2006-11-30

    申请号:US11140070

    申请日:2005-05-27

    Inventor: Stuart MacDonald

    CPC classification number: A61N1/056 A61N1/05 A61N1/086 H01B11/06 Y10S128/908

    Abstract: An electromagnetic interference immune defibrillator lead has a first electromagnetic insulating layer. A first layer is formed on the first electromagnetic insulating layer, the first layer having a plurality of first conductive rings composed of first conductive material, each first conductive ring being separated by first insulating material. A second electromagnetic insulating layer is formed on the first layer. A second layer is, formed on the second electromagnetic insulating layer, the second layer having a plurality of second conductive rings composed of second conductive material, each second conductive ring being separated by second insulating material. A third electromagnetic insulating layer is formed on the second layer. The second conductive rings of second conductive material are positioned such that a second conductive ring overlaps a portion of a first conductive ring and overlaps a portion of a second conductive ring, the second conductive ring being adjacent to the first conductive ring. The second electromagnetically insulating layer is composed of a self-healing dielectric material.

    Electromagnetic interference immune pacing/defibrillation lead

    公开(公告)号:US20060271143A1

    公开(公告)日:2006-11-30

    申请号:US11140068

    申请日:2005-05-27

    Inventor: Stuart MacDonald

    CPC classification number: A61N1/04 A61N1/0563 A61N1/086 Y10S128/908

    Abstract: An electromagnetic interference immune defibrillator lead has a first electromagnetic insulating layer. A first layer is formed on the first electromagnetic insulating layer, the first layer having a plurality of first conductive rings composed of first conductive material, each first conductive ring being separated by first insulating material. A second electromagnetic insulating layer is formed on the first layer. A second layer is, formed on the second electromagnetic insulating layer, the second layer having a plurality of second conductive rings composed of second conductive material, each second conductive ring being separated by second insulating material. A third electromagnetic insulating layer is formed on the second layer. The second conductive rings of second conductive material are positioned such that a second conductive ring overlaps a portion of a first conductive ring and overlaps a portion of a second conductive ring, the second conductive ring being adjacent to the first conductive ring. The second electromagnetically insulating layer is composed of a self-healing dielectric material.

    Delivery system for insulin and other therapeutic agents
    59.
    发明申请
    Delivery system for insulin and other therapeutic agents 审中-公开
    胰岛素和其他治疗剂的输送系统

    公开(公告)号:US20050226918A1

    公开(公告)日:2005-10-13

    申请号:US10217093

    申请日:2002-08-12

    Inventor: Stuart MacDonald

    CPC classification number: A61M31/002 A61K9/0009 A61K9/006 A61K9/0097

    Abstract: An automated, non-implanted, closed-loop system for measurement of a biological material in an individual, determination of appropriate steady-state and bolus drug delivery response to the measured level of the biological material, and storage and delivery of a hormone, drug, or other chemical or biochemical therapeutic agent that serves to regulate or otherwise therapeutically react to the biological material.

    Abstract translation: 一种用于测量个体生物材料的自动化,非植入闭环系统,确定对生物材料的测量水平的适当稳态和推注药物递送响应,以及激素,药物的储存和递送 ,或用于调节或以其他方式对生物材料进行治疗反应的其它化学或生化治疗剂。

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