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    RF ablation and ultrasound catheter for crossing chronic total occlusions
    2.
    发明授权
    RF ablation and ultrasound catheter for crossing chronic total occlusions 有权
    射频消融和超声导管横穿慢性全闭塞

    公开(公告)号：US06394956B1

    公开(公告)日：2002-05-28

    申请号：US09514970

    申请日：2000-02-29

    申请人： Chandru V. Chandrasekaran ,  Zihong Guo ,  Anthony J. Pantages ,  Donald Masters ,  Ryan Kaveckis

    发明人： Chandru V. Chandrasekaran ,  Zihong Guo ,  Anthony J. Pantages ,  Donald Masters ,  Ryan Kaveckis

    IPC分类号： A61B800

    CPC分类号： A61B8/4461 ,  A61B8/12 ,  A61B8/445 ,  A61B18/1492 ,  A61B2017/003 ,  A61B2018/00208 ,  A61B2018/00351 ,  A61B2018/0041 ,  A61B2018/00541 ,  A61B2018/144 ,  A61B2018/1861 ,  A61B2090/3782 ,  A61F9/0079

    摘要： A combination catheter includes an ultrasound transducer and RF ablation electrode. The ultrasound transducer transmits ultrasound signals into and receives echo signals from a vessel. The echo signals are processed and used to produce an image of the tissue surrounding the catheter. A driveshaft rotates the ultrasound transducer to obtain a 360° view of the vessel wall. At the distal end of the driveshaft is an electrode. An RF generator is electrically coupled to the driveshaft to deliver RF energy to the electrode at the distal end of the driveshaft to ablate occluding material in the vessel. The electrode may have a variety of tip shapes including concave, roughened, or expandable configurations, depending on the size of the vessel and composition of the occluding material to be ablated. Alternatively, the RF ablation energy may be delivered to a guidewire that is used to route the ultrasound catheter through a patient's vasculature. Finally, a steerable catheter can be used to further position the ultrasound catheter and ablation electrode in the vessel.

    摘要翻译： 组合导管包括超声换能器和RF消融电极。 超声波传感器将超声波信号发送到容器中并从容器接收回波信号。 回波信号被处理并用于产生围绕导管的组织的图像。 驱动轴旋转超声换能器以获得血管壁的360°视图。 在驱动轴的远端是电极。 RF发生器电耦合到驱动轴以将RF能量传递到驱动轴的远端处的电极以消除容器中的封闭材料。 取决于容器的尺寸和待烧蚀的封闭材料的组成，电极可以具有各种尖端形状，包括凹形，粗糙化或可膨胀构型。 或者，RF消融能量可以被递送到用于将超声导管穿过患者脉管系统的引导线。 最后，可以使用可导向的导管将超声波导管和消融电极进一步放置在容器中。

    Rotary transformer
    3.
    发明授权
    Rotary transformer 有权
    旋转变压器

    公开(公告)号：US08378771B2

    公开(公告)日：2013-02-19

    申请号：US11961912

    申请日：2007-12-20

    申请人： Donald Masters ,  Stuart L. Carp ,  Peter Thornton

    发明人： Donald Masters ,  Stuart L. Carp ,  Peter Thornton

    IPC分类号： H01F21/00

    CPC分类号： H01F21/06 ,  A61B8/12 ,  A61B8/4461 ,  A61B2562/227 ,  H01F27/02 ,  H01F38/18

    摘要： Described herein are rotary transformers for coupling signals between components that rotate relative to one another. In an exemplary embodiment, a rotary transformer comprises a rotary shaft, a first magnetic core on the rotary shaft, and a first winding wound around the first magnetic core. The rotary transformer further comprises a hollow second magnetic core, and a second winding wound along the inner wall of the second magnetic core. During operation, the first winding on the rotary shaft rotates within the second winding with the magnetic cores magnetically coupling signals between the two windings. Also, the first and second windings are closely spaced to provide capacitive coupling between the windings that extends the frequency response of the transformer. In one embodiment, the windings comprises substantially flat conductors wound in the shape of the windings. In another embodiment, each of the windings comprises circular loops connected by jogs.

    摘要翻译： 这里描述的是用于在相对于彼此旋转的部件之间耦合信号的旋转变压器。 在示例性实施例中，旋转变压器包括旋转轴，旋转轴上的第一磁芯和围绕第一磁芯缠绕的第一绕组。 旋转变压器还包括中空的第二磁芯和沿着第二磁芯的内壁缠绕的第二绕组。 在操作期间，旋转轴上的第一绕组在第二绕组内旋转，磁芯在两个绕组之间磁耦合信号。 此外，第一和第二绕组紧密间隔以提供绕组之间的电容耦合，其延伸变压器的频率响应。 在一个实施例中，绕组包括缠绕成绕组形状的基本平坦的导体。 在另一个实施例中，每个绕组包括通过点动连接的圆形回路。

    Systems And Methods For Locking And Detecting The Presence Of A Catheter
    4.
    发明申请
    Systems And Methods For Locking And Detecting The Presence Of A Catheter 有权
    用于锁定和检测导管存在的系统和方法

    公开(公告)号：US20070179473A1

    公开(公告)日：2007-08-02

    申请号：US11559104

    申请日：2006-11-13

    申请人： Donald Masters ,  Scott Harshman

    发明人： Donald Masters ,  Scott Harshman

    IPC分类号： A61M39/10 ,  A61M39/00 ,  A61M25/16 ,  A61M25/18

    CPC分类号： A61M25/0097 ,  A61M39/1011 ,  A61M2039/1005

    摘要： The present invention provides systems and methods for locking and detecting the presence of a catheter. In an embodiment, a catheter system comprises a catheter and a magnet attached to a proximal end of the catheter. The catheter system further comprises a lock receptacle configured to receive and lock the proximal end of the catheter therein, and a Hall-effect sensor configured to detect the presence of the magnet, and hence the catheter, when the catheter is locked in the lock receptacle.

    摘要翻译： 本发明提供用于锁定和检测导管的存在的系统和方法。 在一个实施例中，导管系统包括导管和附接到导管近端的磁体。 导管系统还包括被配置为接收和锁定其中的导管的近端的锁定插座，以及霍尔效应传感器，其构造成当导管锁定在锁定容器中时检测磁体的存在，并因此检测导管 。

    ELECTRICAL CONNECTOR
    5.
    发明申请
    ELECTRICAL CONNECTOR 有权
    电气连接器

    公开(公告)号：US20090221918A1

    公开(公告)日：2009-09-03

    申请号：US12464280

    申请日：2009-05-12

    申请人： E. Scott Harshman ,  Donald Masters ,  Peter Thornton

    发明人： E. Scott Harshman ,  Donald Masters ,  Peter Thornton

    IPC分类号： A61B8/14

    CPC分类号： H01R13/5224 ,  A61B8/445 ,  H01R39/00

    摘要： An electrical connector is described. In one implementation, the connector includes a female portion including one or more electrical contacts and a male portion including one or more electrical contacts. The female portion and the male portion each have a self-orientating geometry that allows the male portion to be mated with the female portion in any rotational position along 360 degrees of rotation. When mated, the electrical contacts of the female portion mate with corresponding one or more electrical contacts of the male portion to form one or more electrical connections between two electronic components.

    摘要翻译： 描述电连接器。 在一个实施方式中，连接器包括阴部分，其包括一个或多个电触点和包括一个或多个电触点的阳部分。 阴部分和阳部分各自具有自对准几何形状，其允许阳部分与360度旋转的任何旋转位置中的阴部配合。 当配合时，阴部分的电触点与阳部分的对应的一个或多个电触点配合，以在两个电子部件之间形成一个或多个电连接。

    Catheter with multiple transducers
    6.
    发明授权
    Catheter with multiple transducers 失效
    导管与多个传感器

    公开(公告)号：US06585656B2

    公开(公告)日：2003-07-01

    申请号：US10072186

    申请日：2002-02-05

    申请人： Donald Masters

    发明人： Donald Masters

    IPC分类号： A61B814

    CPC分类号： A61B8/12 ,  A61B8/445 ,  A61B8/4461

    摘要： A diagnostic and/or therapeutic catheter having a plurality of ultrasound transducers. In a first embodiment, the center frequencies of the second and third transducers may be substantially equal to a fundamental harmonic and a second harmonic, respectively, of ultrasound waves created by the first transducer. In second embodiment, the second transducer transmits waves with a center frequency substantially equal to the center frequency of the first transducer. In third embodiment, the second transducer has a center frequency that differs from the center frequency of the first transducer and the center frequency of the third transducer may be substantially equal to a difference between the fundamental harmonic of the ultrasound waves transmitted by the first transducer and a fundamental harmonic of ultrasound waves produced by the second transducer.

    摘要翻译： 一种具有多个超声换能器的诊断和/或治疗导管。 在第一实施例中，第二和第三换能器的中心频率可以分别基本上等于由第一换能器产生的超声波的基本谐波和二次谐波。 在第二实施例中，第二传感器发射具有基本上等于第一换能器的中心频率的中心频率的波。 在第三实施例中，第二换能器具有与第一换能器的中心频率不同的中心频率，并且第三换能器的中心频率可以基本上等于由第一换能器发射的超声波的基本谐波与 由第二传感器产生的超声波的基本谐波。

    Shielding for intravascular ultrasound imaging systems and methods of making and using
    7.
    发明授权
    Shielding for intravascular ultrasound imaging systems and methods of making and using 有权
    血管内超声成像系统的屏蔽及其制作和使用方法

    公开(公告)号：US08206308B2

    公开(公告)日：2012-06-26

    申请号：US12435258

    申请日：2009-05-04

    申请人： John D. Marshall ,  Donald Masters

    发明人： John D. Marshall ,  Donald Masters

    IPC分类号： A61B8/14

    CPC分类号： A61B8/4461 ,  A61B8/12 ,  A61B8/445 ,  A61B2562/222

    摘要： A catheter assembly for an intravascular ultrasound system includes a catheter, an imaging core, and a shield-coupling capacitor. The catheter defines a lumen extending along a longitudinal length of the catheter. The imaging core is configured and arranged for inserting into the lumen. The imaging core includes a rotatable driveshaft, one or more transducers, one or more conductors, and a conductive shield. The one or more transducers are mounted to the rotatable driveshaft. The one or more conductors are coupled to the one or more transducers and extend along the driveshaft. The conductive shield is disposed around the one or more conductors. The shield-coupling capacitor is electrically coupled to the conductive shield and includes one or more rotating capacitors. The one or more rotating capacitors include one or more rotating plates and one or more stationary plates. The shield-coupling capacitor is configured and arranged for coupling to a system ground.

    摘要翻译： 用于血管内超声系统的导管组件包括导管，成像芯和屏蔽耦合电容器。 导管限定沿着导管的纵向长度延伸的内腔。 成像芯被配置和布置成插入管腔。 成像芯包括可旋转驱动轴，一个或多个换能器，一个或多个导体和导电屏蔽。 一个或多个换能器安装到可旋转的驱动轴上。 一个或多个导体耦合到一个或多个换能器并沿着驱动轴延伸。 导电屏蔽设置在一个或多个导体周围。 屏蔽耦合电容器电耦合到导电屏蔽并且包括一个或多个旋转电容器。 一个或多个旋转电容器包括一个或多个旋转板和一个或多个固定板。 屏蔽耦合电容器被配置和布置成耦合到系统地。

    Systems and methods for reducing noise in an imaging catheter system
    8.
    发明授权
    Systems and methods for reducing noise in an imaging catheter system 有权
    用于降低成像导管系统中噪声的系统和方法

    公开(公告)号：US07887488B2

    公开(公告)日：2011-02-15

    申请号：US11559019

    申请日：2006-11-13

    申请人： Donald Masters

    发明人： Donald Masters

    IPC分类号： A61B8/14

    CPC分类号： A61B8/12 ,  A61B5/06 ,  A61B5/062 ,  A61B2562/222

    摘要： The present invention provides systems and methods for reducing noise in an imaging catheter system. In an embodiment, a catheter comprises an imaging transducer and a transmission line within the catheter to transmit signals to and from the transducer. To reduce noise caused by exposure of the transmission line to external interference, a choke balun is coupled to the transmission line. In another embodiment, the signal from a rotating imaging transducer of the catheter is coupled to a motor drive unit by a slip ring assembly. The transducer signal is passed through first and second transformers placed on opposite sides of the slip ring assembly to reduce noise from the slip ring assembly. In another embodiment, the catheter includes a position sensor to track the position of the catheter. The position sensor is coupled to a second choke balun to further reduce noise.

    摘要翻译： 本发明提供用于降低成像导管系统中的噪声的系统和方法。 在一个实施例中，导管包括成像换能器和导管内的传输线，以将信号传送到换能器和从换能器传送信号。 为了减少由于传输线暴露于外部干扰而引起的噪声，扼流圈平衡 - 不平衡变换器耦合到传输线。 在另一个实施例中，来自导管的旋转成像换能器的信号通过滑环组件联接到马达驱动单元。 换能器信号通过放置在滑环组件的相对侧上的第一和第二变压器，以减小滑环组件的噪音。 在另一个实施例中，导管包括用于跟踪导管位置的位置传感器。 位置传感器耦合到第二扼流平衡不平衡变换器以进一步降低噪声。

    Electrical connector
    9.
    发明授权
    Electrical connector 有权
    电连接器

    公开(公告)号：US07530953B2

    公开(公告)日：2009-05-12

    申请号：US11669752

    申请日：2007-01-31

    申请人： E. Scott Harshman ,  Donald Masters ,  Peter Thornton

    发明人： E. Scott Harshman ,  Donald Masters ,  Peter Thornton

    IPC分类号： A61B5/02 ,  A61B5/04

    CPC分类号： H01R13/5224 ,  A61B8/445 ,  H01R39/00

    摘要： An electrical connector is described. In one implementation, the connector includes a female portion including one or more electrical contacts and a male portion including one or more electrical contacts. The female portion and the male portion each have a self-orientating geometry that allows the male portion to be mated with the female portion in any rotational position along 360 degrees of rotation. When mated, the electrical contacts of the female portion mate with corresponding one or more electrical contacts of the male portion to form one or more electrical connections between two electronic components.

    摘要翻译： 描述电连接器。 在一个实施方式中，连接器包括阴部分，其包括一个或多个电触点和包括一个或多个电触点的阳部分。 阴部分和阳部分各自具有自对准几何形状，其允许阳部分与360度旋转的任何旋转位置中的阴部配合。 当配合时，阴部分的电触点与阳部分的对应的一个或多个电触点配合，以在两个电子部件之间形成一个或多个电连接。