利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

90 条记录 (耗时 0.049 秒)

    Method and system for using ultrasound in cardiac diagnosis and therapy
    1.
    发明授权
    Method and system for using ultrasound in cardiac diagnosis and therapy 有权
    在心脏诊断和治疗中使用超声的方法和系统

    公开(公告)号：US07211045B2

    公开(公告)日：2007-05-01

    申请号：US10620517

    申请日：2003-07-16

    申请人： Praveen Dala-Krishna ,  Charles Bryan Byrd ,  David Jenkins ,  Charles Lee Byrd

    发明人： Praveen Dala-Krishna ,  Charles Bryan Byrd ,  David Jenkins ,  Charles Lee Byrd

    IPC分类号： A61B8/06

    CPC分类号： A61B8/0883 ,  A61B8/065 ,  A61B8/12 ,  A61B8/543

    摘要： A method and system for estimating the volume of blood ejected from the left ventricle of the heart to a succeeding chamber/conduit, or vice-versa, while imaging the intersection of such structures is described. The process utilizes either the M-mode to estimate volume differences in a view of the ventricle over time or Doppler processing techniques to obtain flow profiles across intersections (e.g., valves), or blood vessels, which are then utilized to calculate output. This process can be combined with ECG guidance/triggering to measure/track changes in output from beat to beat, or during the course of an evaluation or therapeutic procedure. This process can be specifically used for the placement of permanent pacemaker electrodes.

    摘要翻译： 描述了在对这种结构的交叉进行成像时估计从心脏左心室向后续腔室/导管喷射的血液的体积或反之亦然的方法和系统。 该过程利用M模式来估计随时间的心室视图中的体积差异或多普勒处理技术以获得跨越交叉点（例如，阀）或血管的流量分布，然后将其用于计算输出。 该过程可以与ECG指导/触发相结合，以测量/跟踪从节拍到节拍的输出变化，或在评估或治疗过程中。 该过程可以专门用于放置恒定起搏器电极。

    Safety systems and methods for ensuring safe use of intra-cardiac ultrasound catheters
    3.
    发明申请
    Safety systems and methods for ensuring safe use of intra-cardiac ultrasound catheters 有权
    用于确保安全使用心脏内超声导管的安全系统和方法

    公开(公告)号：US20050124899A1

    公开(公告)日：2005-06-09

    申请号：US10998039

    申请日：2004-11-29

    申请人： Charles Byrd ,  Praveen Dala-Krishna ,  David Jenkins

    发明人： Charles Byrd ,  Praveen Dala-Krishna ,  David Jenkins

    IPC分类号： A61B8/12 ,  A61B8/14

    CPC分类号： A61B8/12 ,  A61B8/546

    摘要： A system and method for limiting a temperature induced in a body by an ultrasound imaging catheter are provided. The method includes receiving, at an isolation box, an imaging signal from an imaging catheter, receiving, at an isolation box, a signal indicative of a temperature of tissue adjacent to the imaging catheter, removing power to the imaging catheter at the isolation box if the signal indicates the temperature of tissue adjacent to the imaging catheter exceeds a known value, and sending the imaging signal from the catheter to a processor if the signal indicates the temperature of tissue adjacent to the imaging catheter is less than the limit.

    摘要翻译： 提供了一种用于通过超声成像导管限制身体引起的温度的系统和方法。 该方法包括在隔离箱处接收来自成像导管的成像信号，在隔离盒处接收指示与成像导管相邻的组织的温度的信号，在隔离盒处去除成像导管的电力，如果 信号表示与成像导管相邻的组织的温度超过已知值，并且如果信号指示与成像导管相邻的组织的温度低于极限，则将成像信号从导管发送到处理器。

    Method and system for enhancing spectral doppler presentation
    4.
    发明申请
    Method and system for enhancing spectral doppler presentation 审中-公开
    增强光谱多普勒显示的方法和系统

    公开(公告)号：US20070167793A1

    公开(公告)日：2007-07-19

    申请号：US11302391

    申请日：2005-12-14

    申请人： Praveen Dala-Krishna ,  David Jenkins ,  Charles Byrd

    发明人： Praveen Dala-Krishna ,  David Jenkins ,  Charles Byrd

    IPC分类号： A61B8/00

    CPC分类号： A61B8/08 ,  A61B8/06 ,  A61B8/12 ,  A61B8/461 ,  A61B8/466 ,  A61B8/488

    摘要： A method and system for enhancing Doppler spectrum displays is described. Two or more colors are utilized to represent the power scale in the spectral Doppler display. Doppler signals from stronger reflectors of ultrasound, such as cardiac muscle or vessel walls, can then be assigned a different color than Doppler signals from weaker reflectors, such as blood, allowing for better understanding and interpretation of the Doppler spectra.

    摘要翻译： 描述了一种用于增强多普勒频谱显示的方法和系统。 利用两种或更多种颜色来表示频谱多普勒显示中的功率尺度。 然后，来自较强的超声反射器（例如心肌或血管壁）的多普勒信号可以被分配与来自较弱反射器（例如血液）的多普勒信号不同的颜色，从而更好地理解和解释多普勒光谱。

    Method and apparatus for imaging distant anatomical structures in intra-cardiac ultrasound imaging
    5.
    发明申请
    Method and apparatus for imaging distant anatomical structures in intra-cardiac ultrasound imaging 审中-公开
    用于在心脏内超声成像中成像远处解剖结构的方法和装置

    公开(公告)号：US20050245822A1

    公开(公告)日：2005-11-03

    申请号：US11081498

    申请日：2005-03-17

    申请人： Praveen Dala-Krishna ,  Charles Byrd ,  David Jenkins

    发明人： Praveen Dala-Krishna ,  Charles Byrd ,  David Jenkins

    IPC分类号： A61B8/06 ,  A61B8/14

    CPC分类号： A61B8/065 ,  A61B8/0883 ,  A61B8/543

    摘要： An intra-cardiac imaging system that includes an ultrasound catheter that can image the left heart from within the right heart. The catheter has a proximal end, a distal end, and a lumen extending therebetween. The distal end includes an acoustic window longitudinally oriented and having a length of at least ten millimeters. A linear ultrasound transducer having an active surface is longitudinally mounted inside the lumen of the catheter at the distal end of the catheter adjacent the acoustic window. The active surface of the ultrasound transducer is directed toward the acoustic window, is approximately the same length as the acoustic window, and is capable of transmitting an ultrasound signal at a frequency of about 1.5 MHz to about 9 MHz.

    摘要翻译： 一种心脏内成像系统，其包括可从右心脏内形成左心脏的超声导管。 导管具有近端，远端和在其间延伸的内腔。 远端包括纵向定向并具有至少十毫米长度的声窗。 具有活性表面的线性超声换能器在邻近声窗的导管的远端纵向地安装在导管的内腔内。 超声波换能器的活动表面指向声窗，与声窗大致相同的长度，并且能够以大约1.5MHz至大约9MHz的频率发送超声波信号。

    Beam steering element with built-in detector and system for use thereof
    10.
    发明申请
    Beam steering element with built-in detector and system for use thereof 失效

    公开(公告)号：US20070292077A1

    公开(公告)日：2007-12-20

    申请号：US11796550

    申请日：2007-04-27

    申请人： Roger Holmstrom ,  Miriam Qunell ,  David Jenkins

    发明人： Roger Holmstrom ,  Miriam Qunell ,  David Jenkins

    IPC分类号： G02B26/08 ,  B05D5/06 ,  G02B6/26 ,  H01L21/84 ,  C23F1/00

    CPC分类号： G02B6/3588 ,  G02B6/26 ,  G02B6/3512 ,  G02B26/08 ,  G02B26/0841

    摘要： An all-optical cross-connect switching system provides optical switching that may reduce processing requirements by three orders of magnitude over conventional techniques by associating at least one optical detector with an optical beam steering element. In one embodiment, a first beam steering element, having a reflective surface in optical association with a first optical fiber array, and a second beam steering element, having a reflective surface in optical association with a second optical fiber array, are optically arranged to direct an optical beam from a first optical fiber in the first optical fiber array to a second optical fiber in the second optical fiber array. The optical detector provides information about a first position of the optical beam on the second beam steering element. Based on this information, the angle of the first beam steering element may be adjusted to cause the optical beam to change to a second position on the second beam steering element.