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    Navigational reference dislodgement detection method and system
    251.
    发明申请
    Navigational reference dislodgement detection method and system 审中-公开

    公开(公告)号：US20160331268A1

    公开(公告)日：2016-11-17

    申请号：US14946864

    申请日：2015-11-20

    Applicant: St, Jude Medical, Atrial Fibrillation Division, Inc.

    Inventor： John A. Hauck

    IPC: A61B5/06 ,  A61B34/20

    Abstract: A method of tracking a position of a catheter within a patient includes securing a navigational reference at a reference location within the patient, defining the reference location as the origin of a coordinate system, determining a location of an electrode moving within the patient relative to that coordinate system, monitoring for a dislodgement of the navigational reference from the initial reference location, for example by measuring the navigational reference relative to a far field reference outside the patient's body, and generating a signal indicating that the navigational reference has dislodged from the reference location. Upon dislodgement, a user may be provided with guidance to help reposition and secure the navigational reference to the initial reference location, or the navigational reference may be automatically repositioned and secured to the initial reference location. Alternatively, a reference adjustment may be calculated to compensate for the changed reference point/origin.

    Catheter curve shape strut
    253.
    发明申请
    Catheter curve shape strut 审中-公开
    导管曲线形状支柱

    公开(公告)号：US20160310701A1

    公开(公告)日：2016-10-27

    申请号：US15103723

    申请日：2014-11-20

    Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

    Inventor： Sameer Pai

    IPC: A61M25/01 ,  A61B18/14

    Abstract: Catheter curve shape struts for steerable medical devices such as catheters are disclosed. These struts may not only help shape a steerable portion of a medical device (e.g., a distal portion of a catheter), but also may help to return a steered or deflected portion of the medical device to an uncurved configuration when it is no longer desirable or necessary to steer or deflect the medical device. These struts may include first and second pluralities of complementary, staggered cutout regions. When used in a catheter that is deployed via an introducer, at least some configurations of the catheter curve shape strut can enable the catheter to be rotated about its longitudinal axis, even when the distal deflectable section is in a curved configuration and inside of the introducer.

    Abstract translation: 公开了用于可导向医疗装置如导管的导管曲线形状支柱。 这些支柱可能不仅有助于塑造医疗装置的可操纵部分（例如，导管的远端部分），而且可能有助于在不再需要时将医疗装置的转向或偏转部分返回到未弯曲的构造 或者必须引导或偏转医疗装置。 这些支柱可以包括第一和第二多个互补的交错的切口区域。 当用于通过导引器部署的导管中时，导管曲线形状支柱的至少一些构型可以使得导管能够围绕其纵向轴线旋转，即使当远端可偏转部分处于弯曲构造并且导引器内部时 。

    MEDICAL DEVICE GUIDEWIRE WITH HELICAL CUTOUT AND COATING
    254.
    发明申请
    MEDICAL DEVICE GUIDEWIRE WITH HELICAL CUTOUT AND COATING 审中-公开
    医疗设备指南与螺旋切割和涂层

    公开(公告)号：US20160310079A1

    公开(公告)日：2016-10-27

    申请号：US15158503

    申请日：2016-05-18

    Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

    Inventor： Guy P. Vanney ,  Pär Gustafsson

    IPC: A61B5/00 ,  A61B34/20 ,  A61M25/09 ,  A61B5/0245 ,  A61B5/06

    CPC classification number: A61B5/6851 ,  A61B5/0245 ,  A61B5/062 ,  A61B5/066 ,  A61B34/20 ,  A61B2018/00178 ,  A61B2034/2051 ,  A61B2562/0223 ,  A61B2562/12 ,  A61M25/09 ,  A61M2025/0002 ,  A61M2025/09083 ,  A61M2025/09091 ,  A61M2025/09133 ,  A61M2025/0915 ,  A61M2025/09175 ,  A61M2025/09183

    Abstract: A guidewire for a medical device is disclosed. The guidewire includes an elongate body, a proximal connector assembly, a corewire, and a sensor assembly. The body has an annular wall that defines an interior lumen. The proximal connector assembly is coupled to the body and is configured for connection to a medical positioning system. The corewire extends through the lumen. The sensor assembly located on a distal end of the corewire is electrically connected to the proximal connector assembly. The sensor assembly is configured to generate an electrical signal indicative of a position of the sensor assembly in a reference coordinate system defined by the medical positioning system. The body includes a helical cutout extending over a predetermined length of the body. The helical cutout is configured to increase the flexibility of the body over the predetermined length of the body.

    Abstract translation: 公开了一种用于医疗装置的导丝。 导丝包括细长体，近端连接器组件，芯线和传感器组件。 主体具有限定内腔的环形壁。 近端连接器组件联接到主体并且被配置为连接到医疗定位系统。 芯线延伸通过管腔。 位于芯线的远端的传感器组件电连接到近端连接器组件。 传感器组件被配置为产生指示传感器组件在由医疗定位系统限定的参考坐标系中的位置的电信号。 主体包括在身体的预定长度上延伸的螺旋切口。 螺旋切口构造成增加身体在身体的预定长度上的柔性。

    ASSESSMENT OF ELECTRODE COUPLING FOR TISSUE ABLATION
    259.
    发明申请
    ASSESSMENT OF ELECTRODE COUPLING FOR TISSUE ABLATION 审中-公开
    电器联合电击组织评估

    公开(公告)号：US20160220298A1

    公开(公告)日：2016-08-04

    申请号：US15013065

    申请日：2016-02-02

    Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

    Inventor： Saurav Paul ,  Hong Cao ,  Kedar R. Belhe ,  Riki Thao

    IPC: A61B18/12

    CPC classification number: A61B18/1206 ,  A61B5/0538 ,  A61B18/1492 ,  A61B2018/00357 ,  A61B2018/00577 ,  A61B2018/00732 ,  A61B2018/00869 ,  A61B2018/00875 ,  A61B2018/124 ,  A61B2018/128

    Abstract: An electrode catheter and a method for assessing electrode-tissue contact and coupling are disclosed. An exemplary electrode catheter comprises an electrode adapted to apply electrical energy. A measurement circuit is adapted to measure impedance between the electrode and ground as the electrode approaches a target tissue. A processor determines a contact and coupling condition for the target tissue based at least in part on reactance of the impedance measured by the measurement circuit. In another exemplary embodiment, the electrode catheter determines the contact and coupling condition based at least in part on a phase angle of the impedance.

    Abstract translation: 公开了电极导管和用于评估电极组织接触和耦合的方法。 示例性电极导管包括适于施加电能的电极。 测量电路适于在电极接近目标组织时测量电极和地面之间的阻抗。 处理器至少部分地基于由测量电路测量的阻抗的电抗来确定目标组织的接触和耦合条件。 在另一示例性实施例中，电极导管至少部分地基于阻抗的相位角确定接触和耦合条件。

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