公开(公告)号：US09934617B2

公开(公告)日：2018-04-03

申请号：US14780611

申请日：2014-04-17

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

Inventor： Lev A. Koyrakh ,  Eric J. Voth

IPC: G06T17/00 ,  G06T19/20 ,  A61B5/042 ,  G06T19/00 ,  A61B5/0408 ,  G06T11/00 ,  G06T17/20

CPC classification number: G06T19/20 ,  A61B5/0408 ,  A61B5/0422 ,  G06T11/00 ,  G06T17/205 ,  G06T19/00 ,  G06T2210/41 ,  G06T2219/008 ,  G06T2219/2004 ,  G06T2219/2008

Abstract: A method for projecting a 3D surface geometry onto a planar projection comprises: obtaining a 3D geometry of a chamber surface using an algorithm that generates angles and distances between points on the chamber surface that represent mapping information; applying a cutting curve to at least two points on the chamber surface; and at least partially unfolding at least a portion of the chamber surface along the cutting curve to form a planar projection that optimally preserves the angles and distances between points on the chamber surface.

公开(公告)号：US20150366512A1

公开(公告)日：2015-12-24

申请号：US14800910

申请日：2015-07-16

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

Inventor： Lev A. Koyrakh ,  Eric J. Voth ,  John A. Hauck ,  Jeffrey A. Schweitzer

IPC: A61B5/00 ,  A61B5/06

Abstract: A system for determining a location of an electrode of a medical device (e.g., a catheter) in a body of a patient includes a localization block for producing an uncompensated electrode location, a motion compensation block for producing a compensation signal (i.e., for respiration, cardiac, etc.), and a mechanism for subtracting the compensation signal from the uncompensated electrode location. The result is a corrected electrode location substantially free of respiration and cardiac artifacts. The motion compensation block includes a dynamic adaptation feature which accounts for changes in a patient's respiration patterns as well as intentional movements of the medical device to different locations within the patient's body. The system further includes an automatic compensation gain control which suppresses compensation when certain conditions, such as noise or sudden patch impedance changes, are detected.

公开(公告)号：US20150005624A1

公开(公告)日：2015-01-01

申请号：US14471730

申请日：2014-08-28

Applicant: St. Jude Medical, Atrial Fibrillation Division Inc

Inventor： John A. Hauck ,  Jeffery A. Schweitzer ,  Lev A. Koyrakh

IPC: A61B5/06 ,  A61B5/00

CPC classification number: A61B5/063 ,  A61B5/053 ,  A61B5/6801 ,  A61B5/742

Abstract: A system and method are provided for determining characteristics of a device electrode disposed on a medical device within a body. A plurality of measurement electrodes are coupled to an external surface of the body and establish transmission paths for current through the body. An electronic control unit (ECU) is configured to cause transmission of current between a pair of active electrodes selected from the measurement electrodes and thereby generate a voltage on the device electrode. The ECU receives impedance signals from a plurality of passive electrodes among the measurement electrodes other than the active electrodes. The ECU establishes a virtual reference electrode at a reference position within the body responsive to the impedance signals and computes a position of the device responsive to the voltage on the device electrode and the reference position of the reference electrode. The ECU may also compute impedances at the device and measurement electrodes.

Abstract translation: 提供了一种用于确定设置在身体内的医疗装置上的装置电极的特性的系统和方法。 多个测量电极耦合到身体的外表面并建立用于通过身体的电流的传输路径。 电子控制单元（ECU）被配置为在从测量电极中选择的一对有源电极之间引起电流的传输，从而在器件电极上产生电压。 ECU从除了有源电极之外的测量电极中的多个无源电极接收阻抗信号。 ECU根据阻抗信号在主体内的参考位置建立虚拟参考电极，并根据器件电极上的电压和参考电极的参考位置计算器件的位置。 ECU还可以计算设备和测量电极处的阻抗。

公开(公告)号：US10945632B2

公开(公告)日：2021-03-16

申请号：US15412097

申请日：2017-01-23

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

Inventor： Lev A. Koyrakh ,  Jeffrey A. Schweitzer ,  Daniel R. Starks ,  Carlos Carbonera

IPC: A61B5/06 ,  A61B5/042 ,  A61B34/20 ,  A61B5/00 ,  A61B5/05

Abstract: A method of detecting dislodgement of a navigational reference for a localization system includes securing a reference catheter, including at least one reference localization element, at an initial reference location within a localization field. The positions of one or more of the reference localization elements are monitored for a perceived displacement that suggests that the reference catheter has become dislodged from the initial reference location (e.g., a displacement above a certain threshold, such as about 4 mm). The direction of this perceived displacement may then be further analyzed (e.g., compared to a predicted or most likely direction of displacement) to determine whether there has been an actual dislodgement of the reference catheter, and, if so, an appropriate signal (e.g., an audible or visual warning) may be generated. Upon dislodgement, guidance may be provided to aid the practitioner in restoring the reference catheter to its initial location.

公开(公告)号：US10657715B2

公开(公告)日：2020-05-19

申请号：US16234005

申请日：2018-12-27

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

Inventor： Lev A. Koyrakh ,  Eric J. Voth

IPC: G06T19/00 ,  A61B5/042 ,  A61B5/0408 ,  G06T11/00

Abstract: A method for projecting a 3D surface geometry onto a planar projection comprises: obtaining a 3D geometry of a chamber surface using an algorithm that generates angles and distances between points on the chamber surface that represent mapping information; applying a cutting curve to at least two points on the chamber surface; and at least partially unfolding at least a portion of the chamber surface along the cutting curve to form a planar projection that optimally preserves the angles and distances between points on the chamber surface.

公开(公告)号：US20190206143A1

公开(公告)日：2019-07-04

申请号：US16234005

申请日：2018-12-27

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

Inventor： Lev A. Koyrakh ,  Eric J. Voth

IPC: G06T19/20 ,  A61B5/0408 ,  A61B5/042 ,  G06T19/00 ,  G06T11/00 ,  G06T17/20

CPC classification number: G06T19/00 ,  A61B5/0408 ,  A61B5/0422 ,  G06T11/00 ,  G06T17/205 ,  G06T2210/41 ,  G06T2219/008

Abstract: A method for projecting a 3D surface geometry onto a planar projection comprises: obtaining a 3D geometry of a chamber surface using an algorithm that generates angles and distances between points on the chamber surface that represent mapping information; applying a cutting curve to at least two points on the chamber surface; and at least partially unfolding at least a portion of the chamber surface along the cutting curve to form a planar projection that optimally preserves the angles and distances between points on the chamber surface.

公开(公告)号：US20150057507A1

公开(公告)日：2015-02-26

申请号：US14462128

申请日：2014-08-18

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

Inventor： Lev A. Koyrakh ,  Mark Hagfors ,  Simon T. Pranaitis ,  Nathan A. Mullins

IPC: A61B5/04 ,  A61B5/00 ,  A61B5/0488 ,  A61B5/06 ,  A61B5/0402

CPC classification number: A61B5/04011 ,  A61B5/0402 ,  A61B5/042 ,  A61B5/044 ,  A61B5/0488 ,  A61B5/06 ,  A61B5/066 ,  A61B5/7246 ,  A61B5/742 ,  A61B2034/2051

Abstract: An electrophysiology map can be generated from a plurality of electrophysiology data points added automatically in response to defined inclusion criteria. Inclusion criteria can generally be grouped into two categories: location-based (e.g., velocity, distance moved, dwell time, and proximity) and rhythm-based (e.g., cycle length and EKG matching). As each electrophysiology data point is collected, it can be tested against one or more defined inclusion criteria, and added to the electrophysiology map when it satisfies all such criteria. Inclusion criteria can also be employed to generate the geometric model underlying the electrophysiology map.

Abstract translation: 可以从响应于所定义的包含标准自动添加的多个电生理学数据点产生电生理学图谱。 包含标准通常可以分为两类：基于位置的（例如，速度，距离移动，停留时间和接近度）和基于节律的（例如，周期长度和EKG匹配）。 随着每个电生理学数据点被收集，它可以针对一个或多个定义的包含标准进行测试，并且当其满足所有这些标准时被添加到电生理学图谱中。 纳入标准也可用于产生电生理学图下的几何模型。