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21. 发明专利

CA2631946C ASSESSMENT OF ELECTRODE COUPLING FOR TISSUE ABLATION 未知
公开(公告)号：CA2631946C
公开(公告)日：2016-04-26
申请号：CA2631946
申请日：2006-12-06
申请人： ST JUDE MEDICAL ATRIAL FIBRILL
发明人： PAUL SAURAV , BELHE KEDAR RAVINDRA , CAO HONG , THAO CHOU
IPC分类号： A61B18/18 , A61B5/296
摘要： An electrode catheter and a method for assessing electrode-tissue contact and coupling are disclosed. An exemplary electrode catheter comprises an electrode adapted to apply electrical energy. A measurement circuit is adapted to measure impedance between the electrode and ground as the electrode approaches a target tissue. A processor determines a contact and coupling condition for the target tissue based at least in part on reactance of the impedance measured by the measurement circuit. In another exemplary embodiment, the electrode catheter determines the contact and coupling condition based at least in part on a phase angle of the impedance.

22. 发明专利

AU2006292665A1 System and method for three-dimensional mapping of electrophysiology information 未知
公开(公告)号：AU2006292665A1
公开(公告)日：2007-03-29
申请号：AU2006292665
申请日：2006-09-12
申请人： ST JUDE MEDICAL ATRIAL FIBRILL
发明人： BELHE KEDAR RAVINDRA , AFONSO VALTINO X , SCHWEITZER JEFFREY A
IPC分类号： A61B5/04
摘要： An electrophysiology apparatus (8) is used to measure electrical activity occurring in a heart (10) of a patient (11) and to visualize the electrical activity and/or information related to the electrical activity. A three-dimensional map of the electrical activity and/or the information related to the electrical activity is created. Colors, shades of colors, and/or grayscales are assigned to values of the parameters and colors corresponding to the parameters for the electrograms sampled by the electrodes (e.g., 12, 14, 16, 17, 18, 19, 22) are updated on the three-dimensional model (62). Quantifications of complex fractionated electrogram (CFE) information may be mapped to the model. The mean interval between discrete activations within a predetermined time period, or the variance in time between discrete activations may be used to quantify the degree of fractionation.

23. 发明专利

BRPI0615484A2 未知
公开(公告)号：BRPI0615484A2
公开(公告)日：2011-05-17
申请号：BRPI0615484
申请日：2006-08-21
申请人： ST JUDE MEDICAL ATRIAL FIBRILL
发明人： PAUL SAURAV , BELHE KEDAR RAVINDRA
IPC分类号： A61B18/18 , A61B17/20
摘要： Multipolar, multi-lumen, virtual-electrode catheters having at least one surface electrode, and methods for treatment (e.g., treatment of cardiac arrhythmias) with such catheters are disclosed. The catheters have at least two internal lumens, and at least one internal, flexible electrode rides in each internal lumen. The flexible electrodes carry treatment energy (e.g., radiofrequency energy). The energy exits the catheters via at least one exit feature (e.g., slots, portholes, or micro-pores). The methods for treatment include operating the catheters in different modes depending upon location and type of treatment to be performed. The treatment energy delivered by one of the internal, flexible electrodes may be directed to the other internal, flexible electrode; or the energy delivered by one or both of the internal, flexible electrodes may be directed to one or more surface electrodes. The delivered energy establishes at least one electric field, and possibly one or more lesions, in the tissue.

24. 发明专利

CA2631940A1 ASSESSMENT OF ELECTRODE COUPLING FOR TISSUE ABLATION 未知
公开(公告)号：CA2631940A1
公开(公告)日：2007-06-14
申请号：CA2631940
申请日：2006-12-06
申请人： ST JUDE MEDICAL ATRIAL FIBRILL
发明人： BELHE KEDAR RAVINDRA , PAUL SAURAV , CAO HONG
IPC分类号： A61N1/00 , A61B5/296
摘要： An electrode catheter (14) and a method for assessing electrode-tissue contact and coupling are disclosed. An exemplary electrode catheter (14) comprises an electrode (20) adapted to apply electrical energy. A measurement circuit (42) is adapted to measure impedance between the electrode (20) and ground as the electrode approaches a target tissue (24). A processor (50) determines a contact and coupling condition for the target tissue (24) based at least in part on reactance of the impedance measured by the measurement circuit (42). In another exemplary embodiment, the electrode catheter (14) determines the contact and coupling condition based at least in part on a phase angle of the impedance.

25. 发明专利

CA2622638A1 SYSTEM AND METHOD FOR THREE-DIMENSIONAL MAPPING OF ELECTROPHYSIOLOGY INFORMATION 未知
公开(公告)号：CA2622638A1
公开(公告)日：2007-03-29
申请号：CA2622638
申请日：2006-09-12
申请人： ST JUDE MEDICAL ATRIAL FIBRILL
发明人： SCHWEITZER JEFFREY A , BELHE KEDAR RAVINDRA , AFONSO VALTINO X
IPC分类号： A61B5/04
摘要： An electrophysiology apparatus (8) is used to measure electrical activity occurring in a heart (10) of a patient (11) and to visualize the electrical activity and/or information related to the electrical activity. A three dimensional map of the electrical activity and/or the information related to the electrical activity is created. Colors, shades of colors, and/or grayscales are assigned to values of the parameters and colors corresponding to the parameters for the electrograms sampled by the electrodes (e.g., 12, 14, 16, 17, 18, 19, 22) are updated on the three dimensional model (62).

26. 发明专利

CA2616342A1 MULTIPOLAR, VIRTUAL-ELECTRODE CATHETER WITH AT LEAST ONE SURFACE ELECTRODE AND METHOD FOR ABLATION 未知
公开(公告)号：CA2616342A1
公开(公告)日：2007-02-08
申请号：CA2616342
申请日：2006-07-26
申请人： ST JUDE MEDICAL ATRIAL FIBRILL
发明人： PAUL SAURAV , BELHE KEDAR RAVINDRA
IPC分类号： A61B18/00
摘要： Virtual-electrode catheters (10, 12) and methods for using such virtual- electrode catheters (10, 12) are disclosed. For example, bipolar (10) and multipolar (12), virtual electrode catheters having at least one internal electrode (16) and at least one surface electrode (20), and methods of using these catheters for treatment of cardiac arrhythmias are disclosed. The catheters may comprise a catheter body (14) with an internal lumen (18) extending within it and adapted to flowingly receive a conductive fluid (34) . An exit feature defining a flow path from the internal lumen (18) to the catheter's outer surface may exist through a sidewall (30) of the catheter body. A conductor (16) is mounted within the internal lumen (18) adjacent to the exit feature and is adapted to deliver treatment energy to the tissue vi a the conductive fluid (34). At least one surface electrode (20) is mounted on the outer surface of the catheter body adjacent to the exit feature.

27. 发明专利

CA2616342C MULTIPOLAR, VIRTUAL-ELECTRODE CATHETER WITH AT LEAST ONE SURFACE ELECTRODE AND METHOD FOR ABLATION 未知
公开(公告)号：CA2616342C
公开(公告)日：2013-01-15
申请号：CA2616342
申请日：2006-07-26
申请人： ST JUDE MEDICAL ATRIAL FIBRILL
发明人： PAUL SAURAV , BELHE KEDAR RAVINDRA
IPC分类号： A61B18/00
摘要： Virtual-electrode catheters (10, 12) and methods for using such virtual-electrode catheters (10, 12) are disclosed. For example, bipolar (10) and multipolar (12), virtual electrode catheters having at least one internal electrode (16) and at least one surface electrode (20), and methods of using these catheters for treatment of cardiac arrhythmias are disclosed. The catheters may comprise a catheter body (14) with an internal lumen (18) extending within it and adapted to flowingly receive a conductive fluid (34). An exit feature defining a flow path from the internal lumen (18) to the catheter's outer surface may exist through a sidewall (30) of the catheter body. A conductor (16) is mounted within the internal lumen (18) adjacent to the exit feature and is adapted to deliver treatment energy to the tissue via the conductive fluid (34). At least one surface electrode (20) is mounted on the outer surface of the catheter body adjacent to the exit feature.

28. 发明专利

BRPI0614643A2 未知
公开(公告)号：BRPI0614643A2
公开(公告)日：2011-04-12
申请号：BRPI0614643
申请日：2006-07-26
申请人： ST JUDE MEDICAL ATRIAL FIBRILL
发明人： PAUL SAURAV , BELHE KEDAR RAVINDRA
IPC分类号： A61B18/14

29. 发明专利

CA2618538C MULTIPOLAR, MULTI-LUMEN, VIRTUAL-ELECTRODE CATHETER WITH AT LEAST ONE SURFACE ELECTRODE AND METHOD FOR ABLATION 未知
公开(公告)号：CA2618538C
公开(公告)日：2011-02-22
申请号：CA2618538
申请日：2006-08-21
申请人： ST JUDE MEDICAL ATRIAL FIBRILL
发明人： PAUL SAURAV , BELHE KEDAR RAVINDRA
IPC分类号： A61B18/18 , A61B17/20
摘要： Multipolar, multi lumen, virtual-electrode catheters (10I) and methods for treatment (e.g., treatment of cardiac arrhythmias) with such catheters (10I) are disclosed. The catheters (10I) have at least two internal lumens (14, 16), and at least one internal, flexible electrode (18) rides in each internal lumen. The flexible electrodes (18) carry treatment energy (e.g., radiofrequency energy). The energy exits the catheters (10I) via at least one exit feature (e.g., slots, portholes (26), or micro pores). The methods for treatment include operating the catheters (10I) in different modes depending upon location and type of treatment to be performed. The treatment energy delivered by one of the internal, flexible electrodes (18) may be directed to the other internal, flexible electrode (20); or the energy delivered by one or both of the internal, flexible electrodes (18, 20) may be directed to one or more surface electrodes (22).

30. 发明专利

CA2631946A1 ASSESSMENT OF ELECTRODE COUPLING FOR TISSUE ABLATION 未知
公开(公告)号：CA2631946A1
公开(公告)日：2007-06-14
申请号：CA2631946
申请日：2006-12-06
申请人： ST JUDE MEDICAL ATRIAL FIBRILL
发明人： BELHE KEDAR RAVINDRA , PAUL SAURAV , CAO HONG , THAO CHOU
IPC分类号： A61B18/18 , A61B5/296
摘要： An electrode catheter and a method for assessing electrode-tissue contact and coupling are disclosed. An exemplary electrode catheter comprises an electrode adapted to apply electrical energy. A measurement circuit is adapted to measure impedance between the electrode and ground as the electrode approaches a target tissue. A processor determines a contact and coupling condition for the target tissue based at least in part on reactance of the impedance measured by the measurement circuit. In another exemplary embodiment, the electrode catheter determines the contact and coupling condition based at least in part on a phase angle of the impedance.

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