Source: http://www.google.co.uk/patents/US9271782
Timestamp: 2018-01-17 05:19:01
Document Index: 283773905

Matched Legal Cases: ['application No. 60', 'Application No. 06839102', 'Application No. 06839102', 'Application No. 06840133', 'Application No. 06848530', 'Application No. 06848530', 'Application No. 10775417', 'Application No. 11842330']

Patent US9271782 - Assessment of electrode coupling of tissue ablation - Google Patents
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...http://www.google.co.uk/patents/US9271782?utm_source=gb-gplus-sharePatent US9271782 - Assessment of electrode coupling of tissue ablation
Publication number US9271782 B2
Also published as CA2631940A1, CA2631940C, CA2631946A1, CA2631946C, CA2632604A1, CA2632604C, CN101534736A, CN101534736B, CN103251451A, CN103251451B, EP1962708A2, EP1962708A4, EP1962708B1, EP1962710A2, EP1962710A4, EP1962710B1, EP1962945A1, EP1962945A4, EP1962945B1, US8267926, US8369922, US8728077, US8755860, US9283025, US9283026, US20080275465, US20080281319, US20080288038, US20080300589, US20100228247, US20100241117, US20130138099, US20140364843, WO2007067628A1, WO2007067937A2, WO2007067937A3, WO2007067938A2, WO2007067938A3, WO2007067939A2, WO2007067939A3, WO2007067941A2, WO2007067941A3, WO2007067943A2, WO2007067943A3
Publication number 095688, 12095688, PCT/2006/61714, PCT/US/2006/061714, PCT/US/2006/61714, PCT/US/6/061714, PCT/US/6/61714, PCT/US2006/061714, PCT/US2006/61714, PCT/US2006061714, PCT/US200661714, PCT/US6/061714, PCT/US6/61714, PCT/US6061714, PCT/US661714, US 9271782 B2, US 9271782B2, US-B2-9271782, US9271782 B2, US9271782B2
Patent Citations (223), Non-Patent Citations (37), Referenced by (9), Classifications (21), Legal Events (2)
US 9271782 B2
an electrical power source at least interconnectable with a first ablation electrode and configured to apply electrical energy to said first ablation electrode;
a data structure having a plurality of empirically predetermined excessive electrical coupling benchmark values corresponding to empirical amounts of electrical energy passing between a testing electrode and a corresponding plurality of types of tissue during ablation that form excessively deep lesions in each of the corresponding plurality of types of tissue, wherein each empirically predetermined excessive electrical coupling benchmark value is related to electrical conductivity and tissue compliance of each of the corresponding plurality of types of tissue, the corresponding plurality of types of tissue including a target tissue;
a coupling assessment module configured to monitor an electrical coupling condition between said first ablation electrode and the target tissue during application of the electrical energy to the target tissue, wherein said coupling assessment module is configured, during application of the electrical energy to said first ablation electrode, to identify development of an elevated electrical coupling condition by comparing at least a portion of an impedance signal measured between said first ablation electrode and the target tissue with one of said plurality of empirically predetermined excessive electrical coupling benchmark values corresponding to the target tissue; and
a display device configured to, upon identification of said development of said elevated electrical coupling condition, generate an output indicative of said elevated electrical coupling condition.
2. The medical system of claim 1, wherein said coupling assessment module is configured to utilize a reactance component of said impedance signal to identify said development of said elevated electrical coupling condition.
3. The medical system of claim 1, wherein said coupling assessment module is configured to compare a phase angle to at least one phase angle benchmark value to identify said elevated coupling condition.
4. The medical system of claim 1, wherein said coupling assessment module is configured to compare a frequency, at which phase angle has a preset value, to at least one benchmark frequency value to identify said elevated coupling condition.
5. The medical system of claim 1, wherein said coupling assessment module is configured to compare a frequency, at which reactance has a preset value, to at least one benchmark frequency value to identify said elevated coupling condition.
6. The medical system of claim 1, further comprising a return electrode, wherein said first ablation electrode and said return electrode are associated with different catheters.
7. The medical system of claim 6, wherein each of said first ablation electrode and said return electrode are disposable in a common heart chamber.
8. The medical system of claim 6, wherein said return electrode has a larger surface area than said first ablation electrode.
This application is a U.S. National Stage of PCT/US2006/061714, filed 6 Dec. 2006, which claims the benefit of U.S. provisional application No. 60/748,234, filed on 6 Dec. 2005, which is incorporate herein by reference.
This application is also related to international application Nos. PCT/US2006/046565, PCT/US2006/061716 PCT/US2006/061712, PCT/US2006/061710, PCT/US2006/061711, PCT/US2006/061713 and PCT/US2006/046816, being filed concurrently herewith (“international applications”). The international applications are incorporated herein by reference.
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Cooperative Classification A61B2090/064, A61B2090/065, A61B2018/00303, A61B2018/0075, A61B2018/00577, A61B2018/00875, A61B2018/00357, A61B18/1492, A61B2018/00755, A61B2018/00642, A61B2018/00869, A61B2018/00666, A61B34/20, A61B18/1206, A61B2018/00702, A61B2019/464, A61B2019/465, A61B19/5244