公开(公告)号：US20130023784A1

公开(公告)日：2013-01-24

申请号：US13584368

申请日：2012-08-13

申请人： Clint Schneider ,  Hong Cao ,  Saurav Paul

发明人： Clint Schneider ,  Hong Cao ,  Saurav Paul

IPC分类号： A61B5/053 ,  A61B18/14

CPC分类号： A61B5/053

摘要： A compensation circuit has a predetermined, known complex impedance and is located in a handle of a catheter or in a distal end of a cable that connects to the catheter. The compensation circuit is probed with a pilot signal produced by a compensation control that is external to the catheter, by way of an electrical connection through the connecting cable. The compensation control measures the complex impedance, which is the combination of the circuit's known impedance as well as that of the cable. The compensation control then determines the difference between the measured and the known complex impedances. The difference represents that which is attributable to the cable, and is used to compensate or cancel out such cable-related contributions to complex impedance in measurements made over other electrical connections in the same cable. In another aspect, an unknown tissue is identified as one of a plurality of possible tissue types such as regular myocardium, scar and fat based on the measured phase angle of the complex impedance of the unknown tissue.

公开(公告)号：US20090171235A1

公开(公告)日：2009-07-02

申请号：US11966320

申请日：2007-12-28

申请人： Clint Schneider ,  Hong Cao ,  Saurav Paul

发明人： Clint Schneider ,  Hong Cao ,  Saurav Paul

IPC分类号： A61B5/053

CPC分类号： A61B5/053

摘要： A compensation circuit has a predetermined, known complex impedance and is located in a handle of a catheter or in a distal end of a cable that connects to the catheter. The compensation circuit is probed with a pilot signal produced by a compensation control that is external to the catheter, by way of an electrical connection through the connecting cable. The compensation control measures the complex impedance, which is the combination of the circuit's known impedance as well as that of the cable. The compensation control then determines the difference between the measured and the known complex impedances. The difference represents that which is attributable to the cable, and is used to compensate or cancel out such cable-related contributions to complex impedance in measurements made over other electrical connections in the same cable. In another aspect, an unknown tissue is identified as one of a plurality of possible tissue types such as regular myocardium, scar and fat based on the measured phase angle of the complex impedance of the unknown tissue.

摘要翻译： 补偿电路具有预定的已知的复阻抗，并且位于导管的手柄或连接到导管的电缆的远端中。 通过通过连接电缆的电连接通过由导管外部的补偿控制产生的导频信号来探测补偿电路。 补偿控制测量复阻抗，这是电路已知阻抗以及电缆的阻抗的组合。 然后，补偿控制确定测量的和已知的复阻抗之间的差。 差异表示归因于电缆的差异，并且用于在与同一电缆中的其它电连接相关的测量中补偿或抵消与电缆相关的贡献。 在另一方面，基于所测量的未知组织的复阻抗的相位角，未知组织被鉴定为多种可能的组织类型之一，例如常规心肌，瘢痕和脂肪。

公开(公告)号：US20070225641A1

公开(公告)日：2007-09-27

申请号：US11646744

申请日：2006-12-27

申请人： Clint Schneider ,  Joshua Dudney ,  Richard Stehr ,  Troy Tegg ,  Michael Bednarek ,  Guy Vanney ,  James Jensen ,  Michael Stine

发明人： Clint Schneider ,  Joshua Dudney ,  Richard Stehr ,  Troy Tegg ,  Michael Bednarek ,  Guy Vanney ,  James Jensen ,  Michael Stine

IPC分类号： A61M25/00

CPC分类号： A61M25/0136 ,  A61M25/0147 ,  A61M2025/0186

摘要： The present invention is a catheter actuation handle 14 for deflecting a distal end 18 of a tubular catheter body 12, the handle including an auto-locking mechanism, 54. The handle comprises upper and lower grip portions 24a, 24b, an actuator 20, and an auto-locking mechanism, 54. The auto-locking mechanism 54 is adapted to hold a deflected distal end 18 of the catheter 10 in place without input from the operator. When the distal end 18 of the catheter 10 is deflected from its zero position, it typically will seek a return to its zero position, and as a result exerts a force on the actuator 20. The auto-locking mechanism 54 acts by providing a second force that resists this force from the distal end 18 and holds the distal end 18 in place. As a result, the operator does not need to maintain contact with the buttons 22a, 22b to maintain the distal end 18 in a set position once placed there by actuating the actuator 20.

摘要翻译： 本发明是用于偏转管状导管主体12的远端18的导管致动手柄14，手柄包括自动锁定机构54。 把手包括上和下把手部分24a，24b，致动器20和自动锁定机构54。 自动锁定机构54适于将导管10的偏转的远端18保持在适当位置，而没有来自操作者的输入。 当导管10的远端18从其零位置偏转时，通常将寻求返回其零位置，并因此对致动器20施加力。 自动锁定机构54通过提供抵抗来自远端18的该力并将远端18保持在适当位置的第二力来起作用。 结果，操作者不需要保持与按钮22a，22b的接触，以通过致动致动器20将远端18保持在设置位置。

公开(公告)号：US08777929B2

公开(公告)日：2014-07-15

申请号：US11646744

申请日：2006-12-27

申请人： Clint Schneider ,  Joshua L. Dudney ,  Richard E. Stehr ,  Troy Tegg ,  Michael C. Bednarek ,  Guy P. Vanney ,  James Jensen ,  Michael Stine

发明人： Clint Schneider ,  Joshua L. Dudney ,  Richard E. Stehr ,  Troy Tegg ,  Michael C. Bednarek ,  Guy P. Vanney ,  James Jensen ,  Michael Stine

IPC分类号： A61M25/00

CPC分类号： A61M25/0136 ,  A61M25/0147 ,  A61M2025/0186

摘要： The present invention is a catheter actuation handle for deflecting a distal end of a tubular catheter body, the handle including an auto-locking mechanism. The handle comprises upper and lower grip portions, an actuator, and an auto-locking mechanism. The auto-locking mechanism is adapted to hold a deflected distal end of the catheter in place without input from the operator. When the distal end of the catheter is deflected from its zero position, it typically will seek a return to its zero position, and as a result exerts a force on the actuator. The auto-locking mechanism acts by providing a second force that resists this force from the distal end and holds the distal end in place. As a result, the operator does not need to maintain contact with the buttons to maintain the distal end in a set position once placed there by actuating the actuator.

摘要翻译： 本发明是用于偏转管状导管体的远端的导管致动手柄，手柄包括自动锁定机构。 把手包括上下把手部分，致动器和自动锁定机构。 自动锁定机构适于将导管的偏转的远端保持在适当的位置，而无需操作者的输入。 当导管的远端从其零位偏转时，通常将寻求返回到其零位置，并且因此对致动器施加力。 自动锁定机构通过提供抵抗来自远端的该力并将远端保持在适当位置的第二力来起作用。 结果，操作者不需要保持与按钮的接触，以便通过致动致动器将远端保持在设置位置。

公开(公告)号：US20090306651A1

公开(公告)日：2009-12-10

申请号：US12135685

申请日：2008-06-09

申请人： Clint Schneider

发明人： Clint Schneider

IPC分类号： A61B18/14 ,  A61M25/00 ,  A61B5/042

CPC分类号： A61B5/0422 ,  A61B18/14 ,  A61B18/1492 ,  A61B2017/003 ,  A61B2018/00178 ,  A61B2018/00821 ,  A61B2218/002 ,  A61M25/0068 ,  A61M25/0069 ,  A61M25/0074 ,  A61M25/0082

摘要： The invention is directed to a catheter suitable for medical procedures such as cardiac ablation. The catheter includes a front-loaded catheter tip with an electrically active element. In an embodiment, a catheter includes an elongate catheter shaft assembly having an inner shaft member with a distal end and a proximal end, and an outer shaft member with a distal end, a proximal end, and a lumen between the distal end and the proximal end. The inner shaft member may be inserted into the lumen of the outer shaft member along a longitudinal direction. The inner shaft member may include, at the distal end, a catheter tip member having a lateral dimension that is larger than a lateral dimension of the lumen of the outer shaft member. The catheter tip member may include at least one electrically active element.

摘要翻译： 本发明涉及一种适用于诸如心脏消融的医疗程序的导管。 导管包括具有电活动元件的前装导管末端。 在一个实施例中，导管包括细长的导管轴组件，其具有具有远端和近端的内轴构件，以及外轴构件，其具有远端和近端之间的远端，近端和内腔 结束。 内轴构件可以沿着纵向方向插入到外轴构件的内腔中。 内轴构件可以在远端处包括具有大于外轴构件的内腔的横向尺寸的横向尺寸的导管末端构件。 导管末端构件可以包括至少一个电活性元件。