公开(公告)号：US10932723B2

公开(公告)日：2021-03-02

申请号：US15974339

申请日：2018-05-08

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

Inventor： Braden J. Eliason ,  D. Curtis Deno ,  Eric J. Voth ,  Dale E. Just

IPC: A61B5/042 ,  A61B5/00 ,  A61B18/14 ,  A61B5/04 ,  A61B18/00

Abstract: An electrophysiology catheter is provided. In one embodiment, the catheter includes an elongate, deformable shaft having a proximal end and a distal end and a basket electrode assembly coupled to the distal end of the shaft. The basket electrode assembly has a proximal end and a distal end and is configured to assume a compressed state and an expanded state. The electrode assembly further includes one or more tubular splines having a plurality of electrodes disposed thereon and a plurality of conductors. Each of the plurality of conductors extends through the tubular spline from a corresponding one of the plurality of electrodes to the proximal end of the basket electrode assembly. The tubular splines are configured to assume a non-planar (e.g., a twisted or helical) shape in the expanded state.

公开(公告)号：US09808171B2

公开(公告)日：2017-11-07

申请号：US14782134

申请日：2014-05-07

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

Inventor： Ram K. Balachandran ,  D. Curtis Deno

IPC: A61B5/04 ,  A61B5/042 ,  A61B5/0452 ,  A61B5/06 ,  A61B18/14 ,  A61B5/00 ,  A61B17/00 ,  A61B18/00 ,  A61B34/20

CPC classification number: A61B5/0422 ,  A61B5/0452 ,  A61B5/061 ,  A61B5/062 ,  A61B5/7203 ,  A61B5/7239 ,  A61B18/1492 ,  A61B34/20 ,  A61B2017/00039 ,  A61B2017/00044 ,  A61B2017/00053 ,  A61B2018/00577 ,  A61B2018/00839 ,  A61B2034/2051 ,  A61B2034/2053 ,  A61B2218/002

Abstract: A system and method are provided for determining electrophysiological data. The system comprises an electronic control unit that is configured to receive electrical signals from a set of electrodes, receive position and orientation data for the set of electrodes from a mapping system, compensate for position and orientation artifacts of the set of electrodes, compose cliques of a subset of neighboring electrodes in the set of electrodes, determine catheter orientation independent information of a target tissue, and output the orientation independent information to a display. The method comprising receiving electrogram data for a set of electrodes (80), compensating for artifacts in sensor positions in the mapping system (81), resolving the bipolar signals into a 3D vector electrogram in the mapping system coordinates (82), manipulating observed unipolar voltage signals and the tangent component of the e-field to estimate the conduction velocity vector (83), and outputting the catheter orientation independent information (84).

公开(公告)号：US20170100075A1

公开(公告)日：2017-04-13

申请号：US15333798

申请日：2016-10-25

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

Inventor： Braden J. Eliason ,  D. Curtis Deno ,  Eric J. Voth ,  Dale E. Just

IPC: A61B5/00 ,  A61B18/14 ,  A61B5/04

CPC classification number: A61B5/6858 ,  A61B5/04 ,  A61B5/0422 ,  A61B18/1492 ,  A61B2018/00267 ,  A61B2018/00279 ,  A61B2018/00577 ,  A61B2018/1435

Abstract: An electrophysiology catheter is provided. In one embodiment, the catheter includes an elongate, deformable shaft having a proximal end and a distal end and a basket electrode assembly coupled to the distal end of the shaft. The basket electrode assembly has a proximal end and a distal end and is configured to assume a compressed state and an expanded state. The electrode assembly further includes one or more tubular splines having a plurality of electrodes disposed thereon and a plurality of conductors. Each of the plurality of conductors extends through the tubular spline from a corresponding one of the plurality of electrodes to the proximal end of the basket electrode assembly. The tubular splines are configured to assume a non-planar (e.g., a twisted or helical) shape in the expanded state.

公开(公告)号：US20140278129A1

公开(公告)日：2014-09-18

申请号：US13839074

申请日：2013-03-15

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

Inventor： Eric Jon Voth ,  D. Curtis Deno ,  Lev Abramovich Koyrakh ,  Braden Eliason

IPC: G06F19/00

CPC classification number: G16H50/50 ,  A61B5/0402 ,  A61B5/0422

Abstract: An embodiment of a method for solving the inverse problem of electrophysiology and determining a voltage distribution on a surface of a tissue may comprise receiving a plurality of voltages collected by a plurality of electrodes adjacent to the surface, discretizing the problem using a Finite Element Method (FEM) or a Boundary Element Method (BEM), introducing one or more regularization terms to an error minimization formulation, and solving, by a processor, the voltage distribution according to the plurality of voltages and according to the regularization terms. The regularization terms may comprise one or more of a Laplacian smoothness operator, a Tikhonov regularization matrix, a confidence matrix, and a linear operator that interpolates the plurality of electrode voltages to the tissue voltage distribution.

Abstract translation: 用于解决电生理学的逆问题并确定组织表面上的电压分布的方法的实施例可以包括接收由邻近表面的多个电极收集的多个电压，使用有限元方法（ FEM）或边界元素方法（BEM），将一个或多个正则化项引入到误差最小化公式中，以及根据所述正则化项由处理器求解根据所述多个电压的电压分布。 正则化项可以包括拉普拉斯平滑度算子，Tikhonov正则化矩阵，置信矩阵和将多个电极电压内插到组织电压分布的线性算子中的一个或多个。