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    ULTRASOUND ABLATION APPARATUS WITH DISCRETE STAGGERED ABLATION ZONES
    31.
    发明申请
    ULTRASOUND ABLATION APPARATUS WITH DISCRETE STAGGERED ABLATION ZONES 有权
    超声波吸收装置与分离的分离区

    公开(公告)号：US20110137298A1

    公开(公告)日：2011-06-09

    申请号：US13019563

    申请日：2011-02-02

    Applicant: Tho Hoang NGUYEN ,  Cary HATA ,  Alan DE LA RAMA ,  Vivian TRAN ,  Peter C. CHEN

    Inventor： Tho Hoang NGUYEN ,  Cary HATA ,  Alan DE LA RAMA ,  Vivian TRAN ,  Peter C. CHEN

    IPC: A61B17/00

    CPC classification number: A61B17/2202 ,  A61B5/01 ,  A61B5/0402 ,  A61B5/6852 ,  A61B2017/00243 ,  A61B2017/00247 ,  A61B2017/22021 ,  A61B2017/320084 ,  A61B2018/00392 ,  A61N7/022 ,  A61N2007/003 ,  A61N2007/0078

    Abstract: An ablation apparatus comprises an ultrasonic transducer which includes a piezoelectric element having a cylindrical shape; a plurality of external electrodes disposed on the outer surface of the piezoelectric element; and at least one internal electrode disposed on the inner surface of the piezoelectric element. The at least one internal electrode provides corresponding internal electrode portions that are disposed opposite the external electrodes with respect to the piezoelectric element, the external electrodes and the at least one internal electrode to be energized to apply an electric field across the piezoelectric element. The ultrasonic ablation zones of the external electrodes are distributed in a staggered configuration so as to span one or more open arc segments around the longitudinal axis, and the ultrasound ablation zones of all external electrodes projected longitudinally onto any lateral plane which is perpendicular to the longitudinal axis span a substantially closed loop around the longitudinal axis.

    Abstract translation: 消融装置包括：超声波换能器，其包括具有圆筒形状的压电元件; 设置在所述压电元件的外表面上的多个外部电极; 以及设置在压电元件的内表面上的至少一个内部电极。 所述至少一个内部电极相对于所述压电元件，所述外部电极和所述至少一个内部电极与所述外部电极相对设置相应的内部电极部分，以在所述压电元件上施加电场。 外部电极的超声波消融区域以交错的构型分布，以跨越纵向轴线的一个或多个开放弧段，并且所有外部电极的超声消融区域纵向地突出到垂直于纵向的任何横向平面 轴线围绕纵向轴线跨越基本上闭合的环路。

    Basket catheter having multiple electrodes
    32.
    发明申请
    Basket catheter having multiple electrodes 有权
    篮子导管有多个电极

    公开(公告)号：US20100076426A1

    公开(公告)日：2010-03-25

    申请号：US12599035

    申请日：2008-05-09

    Applicant: Alan de la Rama ,  Cary K. Hata

    Inventor： Alan de la Rama ,  Cary K. Hata

    IPC: A61B18/14

    CPC classification number: A61B5/6858 ,  A61B5/0422 ,  A61B5/4836 ,  A61B18/1492 ,  A61B18/18 ,  A61B2017/003 ,  A61B2018/0016 ,  A61B2018/00214 ,  A61B2018/00839

    Abstract: Embodiments of the present invention provide a catheter that comprises an elongated catheter body (16) and an electrode assembly (10) at the distal end of the catheter body. The electrode assembly comprises a plurality of spines (11), each of the spines having a proximal end connected to the distal end of the catheter and a distal end, the distal ends of the spines being connected at a spine tip junction (13). Each spine includes an elbow (20) having at least one discontinuity in stiffness at an intermediate position between the distal end and the proximal end thereof. The spines include a plurality of electrodes (12). The electrode assembly is collapsible to a collapsed arrangement to fit within a lumen of the elongated catheter body and expandable to an expanded arrangement with the elbows of the spines bending outwardly relative to the proximal and distal ends of the spines.

    Abstract translation: 本发明的实施例提供了一种导管，其包括细长导管主体（16）和在导管主体的远端处的电极组件（10）。 电极组件包括多个脊（11），每个脊具有连接到导管的远端的近端和远端，脊柱的远端在脊尖端连接处连接（13）。 每个脊柱包括在远端和其近端之间的中间位置处具有至少一个刚度不连续性的肘部（20）。 脊柱包括多个电极（12）。 电极组件可折叠到折叠的布置以装配在细长导管主体的内腔中并且可扩展到扩张布置，其中棘部的肘部相对于脊柱的近端和远端向外弯曲。

    High torque catheter and methods thereof
    33.
    发明授权
    High torque catheter and methods thereof 有权
    高扭矩导管及其方法

    公开(公告)号：US06246914B1

    公开(公告)日：2001-06-12

    申请号：US09372484

    申请日：1999-08-12

    Applicant: Alan de la Rama ,  Hosheng Tu ,  Cary Hata

    Inventor： Alan de la Rama ,  Hosheng Tu ,  Cary Hata

    IPC: A61N106

    CPC classification number: A61N1/06

    Abstract: A flexible catheter shaft suitable for inserting into a body of a patient comprising a high torque transmission assembly of a slit tubular element that has either a plurality of slits or at least one continuously spiraling slit on said slit tubular element and has sufficient torque properties ensuring that a substantial fraction of the rotational and displacement forces provided along said flexible catheter shaft are translated to rotational and displacement forces at a distal end of said flexible catheter shaft.

    Abstract translation: 适于插入患者体内的柔性导管轴，包括狭缝管状元件的高扭矩传递组件，狭缝管状元件在所述狭缝管状元件上具有多个狭缝或至少一个连续螺旋形狭缝，并具有足够的扭矩特性，确保 沿着所述柔性导管轴提供的旋转和移位力的很大一部分被转换为在所述柔性导管轴的远端处的旋转和移位力。

    Anchorable guidewire
    36.
    发明授权
    Anchorable guidewire 失效
    安全指导

    公开(公告)号：US5167239A

    公开(公告)日：1992-12-01

    申请号：US708251

    申请日：1991-05-30

    Applicant: Donald M. Cohen ,  Alfredo Soria ,  Edmund E. Spaeth ,  Alan de la Rama

    Inventor： Donald M. Cohen ,  Alfredo Soria ,  Edmund E. Spaeth ,  Alan de la Rama

    IPC: A61B17/00 ,  A61B17/22 ,  A61F2/958 ,  A61M25/09

    CPC classification number: A61B17/22032 ,  A61M25/09 ,  A61B2017/00783 ,  A61M2025/09008 ,  A61M2025/09091 ,  A61M2025/09175 ,  A61M25/10

    Abstract: An anchorable guidewire for use in various medical applications, said guidewire comprising an elongate guidewire body with at least one inflatable anchoring member or balloon positioned thereon and a deactuatable check valve operative to maintain inflation of the inflatable anchoring member or balloon until such time as the check valve is volitionally deactuated by a human operator. The inflatable anchoring member or balloon is preferably sized, constructed and configured such that, when fully deflated, the anchoring member or balloon will fully collapse against the outer surface of the guidewire without substantial protrusion or extension therebeyond.

    Abstract translation: 一种用于各种医疗应用的可固定导丝，所述导丝包括细长导丝主体，其具有至少一个位于其上的可充气锚固构件或气囊，以及可操作的止回阀，其可操作地保持可充气锚定构件或气囊的充气，直到检查 阀门由人操作者静态地停用。 优选地，可充气锚固构件或气囊的尺寸，构造和构造使得当完全放气时，锚固构件或气囊将完全塌陷在导丝的外表面上，而不会在其上大量突出或延伸。

    Bendable catheter arms having varied flexibility
    38.
    发明授权
    Bendable catheter arms having varied flexibility 有权
    弯曲导管臂具有不同的灵活性

    公开(公告)号：US08588885B2

    公开(公告)日：2013-11-19

    申请号：US13072357

    申请日：2011-03-25

    Applicant: Sacha C. Hall ,  Dale E. Just ,  Alan de la Rama ,  Cary Hata

    Inventor： Sacha C. Hall ,  Dale E. Just ,  Alan de la Rama ,  Cary Hata

    IPC: A61B5/04 ,  A61B18/14

    CPC classification number: A61B18/1492 ,  A61B5/0422 ,  A61B5/4836 ,  A61B5/6858 ,  A61B2018/00267 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00839

    Abstract: In various embodiments, a catheter comprising an expandable electrode assembly or basket is provided. In specific embodiments, the basket is particularly useful for mapping electrical activity at one or more locations within the heart. The basket can comprise a plurality of bendable or deflectable arms. At least one of the arms may have varied flexibility over its length in the form of one or more discontinuities of stiffness or flexibility at an elbow region or other variances in flexibility over the arm's length. Such variance in flexibility may allow the arm to assume a different bent configuration or respond to external factors more positively than possible with an arm having a static or near static flexibility or stiffness over its length.

    Abstract translation: 在各种实施例中，提供了包括可扩张电极组件或篮子的导管。 在具体实施例中，篮子特别适用于在心脏内的一个或多个位置处映射电活动。 篮可以包括多个可弯曲或可偏转的臂。 至少一个臂可以在其长度上具有在肘部区域处的刚度或柔性的一个或多个不连续性的形式或其在臂长度上的其他柔性变化的形式的变化的柔性。 柔性的这种变化可允许臂具有不同的弯曲构型，或者通过在其长度上具有静态或接近静态的柔性或刚度的臂，可以更可靠地响应外部因素。

    Percutaneous lead with distal fixation
    39.
    发明授权
    Percutaneous lead with distal fixation 有权
    经皮导管远端固定

    公开(公告)号：US08521305B2

    公开(公告)日：2013-08-27

    申请号：US13099605

    申请日：2011-05-03

    Applicant: Alan De La Rama ,  Peter C. Chen

    Inventor： Alan De La Rama ,  Peter C. Chen

    IPC: A61N1/00

    CPC classification number: A61N1/0558

    Abstract: A lead includes an elongated body and an anchor segment disposed between the distal end of the body and electrodes on a distal portion of the body. The anchor segment has lobes which are separated by slits and movable between a collapsed position and an expanded position. A positioning mechanism is disposed inside the hollow interior of the body and at least partially within the anchor segment. The positioning mechanism has a distal positioning portion attached to the distal end of the body and a proximal positioning portion. A control member is connected with the proximal positioning portion to control the positioning mechanism to pull the distal end toward the proximal end so as to move the lobes from the collapsed position to the expanded position and to push the distal end away from the proximal end so as to move the lobes from the expanded to the collapsed position.

    Abstract translation: 引线包括细长主体和设置在主体的远端之间的主体部分和主体的远侧部分上的电极。 锚节段具有由狭缝分开并在折叠位置和展开位置之间移动的凸角。 定位机构设置在身体的中空内部内部，并且至少部分地在锚定段内。 定位机构具有附接到主体的远端的远侧定位部分和近端定位部分。 控制构件与近端定位部分连接以控制定位机构将远端朝向近端拉动，以便将凸起从折叠位置移动到扩张位置，并将远端远离近端推动，从而 以将波瓣从展开位置移动到折叠位置。

    Dual-deflecting electrophysiology catheter
    40.
    发明申请
    Dual-deflecting electrophysiology catheter 有权

    公开(公告)号：US20130144208A1

    公开(公告)日：2013-06-06

    申请号：US13757947

    申请日：2013-02-04

    Applicant: Alan de la Rama ,  Phuong-Oahn Phung ,  Pianka Roy

    Inventor： Alan de la Rama ,  Phuong-Oahn Phung ,  Pianka Roy

    IPC: A61M25/01

    CPC classification number: A61M25/0147 ,  A61B5/0422 ,  A61B5/6855 ,  A61B5/6856

    Abstract: An electrophysiology catheter includes a tubular body having a proximal region, a neck region, and a distal region predisposed into a loop and including electrodes. A first deflection wire extends through at least a portion of the proximal region of the catheter body and includes a first flattened section, while a second deflection wire extends through the neck region and at least a portion of the distal region and includes a second flattened section within the neck region. A first activation wire is joined to the flattened section of the first deflection wire, while a second activation wire is joined to the flattened section of the second deflection wire. Thus, forces acting on the first and second activation wires, such as forces imposed by a handle-based actuator, are respectively transmitted to the first and second deflection wires, thereby deflecting the proximal and neck regions, respectively.

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