WO2007070361A3 - Assessment of electrode coupling for tissue ablation - Google Patents

Assessment of electrode coupling for tissue ablation Download PDF

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Publication number
WO2007070361A3
WO2007070361A3 PCT/US2006/046816 US2006046816W WO2007070361A3 WO 2007070361 A3 WO2007070361 A3 WO 2007070361A3 US 2006046816 W US2006046816 W US 2006046816W WO 2007070361 A3 WO2007070361 A3 WO 2007070361A3
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
contact
assessment
impedance
tissue ablation
Prior art date
Application number
PCT/US2006/046816
Other languages
French (fr)
Other versions
WO2007070361A2 (en
Inventor
Saurav Paul
Hong Cao
Chou Thao
Original Assignee
St Jude Medical Atrial Fibrill
Saurav Paul
Hong Cao
Chou Thao
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by St Jude Medical Atrial Fibrill, Saurav Paul, Hong Cao, Chou Thao filed Critical St Jude Medical Atrial Fibrill
Priority to US12/095,685 priority Critical patent/US8998890B2/en
Publication of WO2007070361A2 publication Critical patent/WO2007070361A2/en
Publication of WO2007070361A3 publication Critical patent/WO2007070361A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/40—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345—Vascular system
    • A61B2018/00351—Heart
    • A61B2018/00357—Endocardium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00875—Resistance or impedance

Abstract

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.
PCT/US2006/046816 2005-12-06 2006-12-06 Assessment of electrode coupling for tissue ablation WO2007070361A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/095,685 US8998890B2 (en) 2005-12-06 2006-12-06 Assessment of electrode coupling for tissue ablation

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US74823405P 2005-12-06 2005-12-06
US60/748,234 2005-12-06
US82929806P 2006-10-12 2006-10-12
US60/829,298 2006-10-12

Publications (2)

Publication Number Publication Date
WO2007070361A2 WO2007070361A2 (en) 2007-06-21
WO2007070361A3 true WO2007070361A3 (en) 2008-12-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/046816 WO2007070361A2 (en) 2005-12-06 2006-12-06 Assessment of electrode coupling for tissue ablation

Country Status (2)

Country Link
US (1) US8998890B2 (en)
WO (1) WO2007070361A2 (en)

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6994706B2 (en) 2001-08-13 2006-02-07 Minnesota Medical Physics, Llc Apparatus and method for treatment of benign prostatic hyperplasia
US7041096B2 (en) * 2002-10-24 2006-05-09 Synergetics Usa, Inc. Electrosurgical generator apparatus
US8641704B2 (en) * 2007-05-11 2014-02-04 Medtronic Ablation Frontiers Llc Ablation therapy system and method for treating continuous atrial fibrillation
US9198733B2 (en) 2008-04-29 2015-12-01 Virginia Tech Intellectual Properties, Inc. Treatment planning for electroporation-based therapies
US10272178B2 (en) 2008-04-29 2019-04-30 Virginia Tech Intellectual Properties Inc. Methods for blood-brain barrier disruption using electrical energy
US10117707B2 (en) 2008-04-29 2018-11-06 Virginia Tech Intellectual Properties, Inc. System and method for estimating tissue heating of a target ablation zone for electrical-energy based therapies
US10702326B2 (en) 2011-07-15 2020-07-07 Virginia Tech Intellectual Properties, Inc. Device and method for electroporation based treatment of stenosis of a tubular body part
US10238447B2 (en) 2008-04-29 2019-03-26 Virginia Tech Intellectual Properties, Inc. System and method for ablating a tissue site by electroporation with real-time monitoring of treatment progress
US9283051B2 (en) 2008-04-29 2016-03-15 Virginia Tech Intellectual Properties, Inc. System and method for estimating a treatment volume for administering electrical-energy based therapies
US11254926B2 (en) 2008-04-29 2022-02-22 Virginia Tech Intellectual Properties, Inc. Devices and methods for high frequency electroporation
US11272979B2 (en) 2008-04-29 2022-03-15 Virginia Tech Intellectual Properties, Inc. System and method for estimating tissue heating of a target ablation zone for electrical-energy based therapies
US10245098B2 (en) 2008-04-29 2019-04-02 Virginia Tech Intellectual Properties, Inc. Acute blood-brain barrier disruption using electrical energy based therapy
AU2009243079A1 (en) 2008-04-29 2009-11-05 Virginia Tech Intellectual Properties, Inc. Irreversible electroporation to create tissue scaffolds
US10448989B2 (en) 2009-04-09 2019-10-22 Virginia Tech Intellectual Properties, Inc. High-frequency electroporation for cancer therapy
US8992517B2 (en) 2008-04-29 2015-03-31 Virginia Tech Intellectual Properties Inc. Irreversible electroporation to treat aberrant cell masses
US9867652B2 (en) 2008-04-29 2018-01-16 Virginia Tech Intellectual Properties, Inc. Irreversible electroporation using tissue vasculature to treat aberrant cell masses or create tissue scaffolds
JP5693471B2 (en) 2009-02-11 2015-04-01 ボストン サイエンティフィック サイムド，インコーポレイテッドＢｏｓｔｏｎ Ｓｃｉｅｎｔｉｆｉｃ Ｓｃｉｍｅｄ，Ｉｎｃ． Insulated ablation catheter device and use thereof
US11638603B2 (en) 2009-04-09 2023-05-02 Virginia Tech Intellectual Properties, Inc. Selective modulation of intracellular effects of cells using pulsed electric fields
US11382681B2 (en) 2009-04-09 2022-07-12 Virginia Tech Intellectual Properties, Inc. Device and methods for delivery of high frequency electrical pulses for non-thermal ablation
US8903488B2 (en) 2009-05-28 2014-12-02 Angiodynamics, Inc. System and method for synchronizing energy delivery to the cardiac rhythm
US9895189B2 (en) 2009-06-19 2018-02-20 Angiodynamics, Inc. Methods of sterilization and treating infection using irreversible electroporation
US9358072B2 (en) * 2010-01-15 2016-06-07 Immersion Corporation Systems and methods for minimally invasive surgical tools with haptic feedback
US9700368B2 (en) 2010-10-13 2017-07-11 Angiodynamics, Inc. System and method for electrically ablating tissue of a patient
US9603659B2 (en) 2011-09-14 2017-03-28 Boston Scientific Scimed Inc. Ablation device with ionically conductive balloon
JP5926806B2 (en) 2011-09-22 2016-05-25 ザ・ジョージ・ワシントン・ユニバーシティＴｈｅ Ｇｅｏｒｇｅ Ｗａｓｈｉｎｇｔｏｎｕｎｉｖｅｒｓｉｔｙ System and method for visualizing ablated tissue
ES2727868T3 (en) 2011-09-22 2019-10-21 Univ George Washington Systems for visualizing ablated tissue
US9078665B2 (en) 2011-09-28 2015-07-14 Angiodynamics, Inc. Multiple treatment zone ablation probe
AU2013207994B2 (en) 2012-01-10 2015-05-07 Boston Scientific Scimed, Inc. Electrophysiology system
WO2013162884A1 (en) * 2012-04-26 2013-10-31 Medtronic Ablation Frontiers Llc System for detecting tissue contact during ablation
US9427167B2 (en) 2012-12-20 2016-08-30 Boston Scientific Scimed, Inc. Real-time feedback for electrode contact during mapping
US9113805B2 (en) 2013-03-04 2015-08-25 Mortara Instrument, Inc. Impedance measurement system
US20150141847A1 (en) 2013-11-20 2015-05-21 The George Washington University Systems and methods for hyperspectral analysis of cardiac tissue
US10471254B2 (en) 2014-05-12 2019-11-12 Virginia Tech Intellectual Properties, Inc. Selective modulation of intracellular effects of cells using pulsed electric fields
US10524684B2 (en) 2014-10-13 2020-01-07 Boston Scientific Scimed Inc Tissue diagnosis and treatment using mini-electrodes
US10603105B2 (en) 2014-10-24 2020-03-31 Boston Scientific Scimed Inc Medical devices with a flexible electrode assembly coupled to an ablation tip
KR102612185B1 (en) 2014-11-03 2023-12-08 460메디컬, 인크. Systems and methods for assessment of contact quality
JP2017537681A (en) 2014-11-03 2017-12-21 ザ・ジョージ・ワシントン・ユニバーシティＴｈｅ Ｇｅｏｒｇｅ Ｗａｓｈｉｎｇｔｏｎｕｎｉｖｅｒｓｉｔｙ Damage evaluation system and method
SG11201703943VA (en) 2014-11-19 2017-06-29 Advanced Cardiac Therapeutics Inc Ablation devices, systems and methods of using a high-resolution electrode assembly
EP3220844B1 (en) 2014-11-19 2020-11-11 EPiX Therapeutics, Inc. Systems for high-resolution mapping of tissue
JP6673598B2 (en) 2014-11-19 2020-03-25 エピックス セラピューティクス，インコーポレイテッド High resolution mapping of tissue with pacing
WO2016100325A1 (en) 2014-12-15 2016-06-23 Virginia Tech Intellectual Properties, Inc. Devices, systems, and methods for real-time monitoring of electrophysical effects during tissue treatment
US9743854B2 (en) 2014-12-18 2017-08-29 Boston Scientific Scimed, Inc. Real-time morphology analysis for lesion assessment
EP3273855A4 (en) * 2015-03-25 2018-12-05 Advanced Cardiac Therapeutics, Inc. Contact sensing systems and methods
US9636164B2 (en) 2015-03-25 2017-05-02 Advanced Cardiac Therapeutics, Inc. Contact sensing systems and methods
US10182742B2 (en) 2015-04-02 2019-01-22 Medtronic Ablation Frontiers Llc Tissue contact sensing with a multi electrode ablation catheter
US10143399B2 (en) 2015-04-02 2018-12-04 Medtronic Ablation Frontiers Llc Tissue contact sensing with a multi electrode ablation catheter
US10779904B2 (en) 2015-07-19 2020-09-22 460Medical, Inc. Systems and methods for lesion formation and assessment
US10350423B2 (en) 2016-02-04 2019-07-16 Cardiac Pacemakers, Inc. Delivery system with force sensor for leadless cardiac device
CA3017269A1 (en) 2016-03-15 2017-09-21 Epix Therapeutics, Inc. Improved devices, systems and methods for irrigated ablation
US10905492B2 (en) 2016-11-17 2021-02-02 Angiodynamics, Inc. Techniques for irreversible electroporation using a single-pole tine-style internal device communicating with an external surface electrode
CN110809448B (en) 2017-04-27 2022-11-25 Epix疗法公司 Determining properties of contact between catheter tip and tissue
US11607537B2 (en) 2017-12-05 2023-03-21 Virginia Tech Intellectual Properties, Inc. Method for treating neurological disorders, including tumors, with electroporation
US11311329B2 (en) 2018-03-13 2022-04-26 Virginia Tech Intellectual Properties, Inc. Treatment planning for immunotherapy based treatments using non-thermal ablation techniques
US11925405B2 (en) 2018-03-13 2024-03-12 Virginia Tech Intellectual Properties, Inc. Treatment planning system for immunotherapy enhancement via non-thermal ablation
US10686715B2 (en) 2018-05-09 2020-06-16 Biosig Technologies, Inc. Apparatus and methods for removing a large-signal voltage offset from a biomedical signal
US11950835B2 (en) 2019-06-28 2024-04-09 Virginia Tech Intellectual Properties, Inc. Cycled pulsing to mitigate thermal damage for multi-electrode irreversible electroporation therapy
US20210068916A1 (en) * 2019-09-07 2021-03-11 Perceptive Ablation, Inc. Methods and systems for force detection in ablation devices
KR20230165840A (en) 2021-04-07 2023-12-05 비티엘 메디컬 디벨롭먼트 에이.에스. Pulsed field ablation device and method
IL309432A (en) 2021-07-06 2024-02-01 Btl Medical Dev A S Pulsed field ablation device and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673704A (en) * 1994-01-28 1997-10-07 Marchlinski; Francis E. Method of using endocardial impedance for determining electrode-tissue contact
US20020068931A1 (en) * 1999-06-04 2002-06-06 Engineering & Research Associates, Inc. Apparatus and method for real time determination of materials' electrical properties

Family Cites Families (154)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4641649A (en) 1985-10-30 1987-02-10 Rca Corporation Method and apparatus for high frequency catheter ablation
US5588432A (en) * 1988-03-21 1996-12-31 Boston Scientific Corporation Catheters for imaging, sensing electrical potentials, and ablating tissue
US5257635A (en) * 1988-11-25 1993-11-02 Sensor Electronics, Inc. Electrical heating catheter
US5230349A (en) * 1988-11-25 1993-07-27 Sensor Electronics, Inc. Electrical heating catheter
AU3128593A (en) 1991-11-08 1993-06-07 Ep Technologies Inc Radiofrequency ablation with phase sensitive power detection
US6179824B1 (en) 1993-05-10 2001-01-30 Arthrocare Corporation System and methods for electrosurgical restenosis of body lumens
US5341807A (en) * 1992-06-30 1994-08-30 American Cardiac Ablation Co., Inc. Ablation catheter positioning system
US5297549A (en) 1992-09-23 1994-03-29 Endocardial Therapeutics, Inc. Endocardial mapping system
US5311866A (en) 1992-09-23 1994-05-17 Endocardial Therapeutics, Inc. Heart mapping catheter
US5433198A (en) 1993-03-11 1995-07-18 Desai; Jawahar M. Apparatus and method for cardiac ablation
US5657755A (en) 1993-03-11 1997-08-19 Desai; Jawahar M. Apparatus and method for cardiac ablation
US5582609A (en) * 1993-10-14 1996-12-10 Ep Technologies, Inc. Systems and methods for forming large lesions in body tissue using curvilinear electrode elements
US6001093A (en) * 1993-10-15 1999-12-14 Ep Technologies, Inc. Systems and methods for creating long, thin lesions in body tissue
ZA948393B (en) 1993-11-01 1995-06-26 Polartechnics Ltd Method and apparatus for tissue type recognition
US5730127A (en) * 1993-12-03 1998-03-24 Avitall; Boaz Mapping and ablation catheter system
WO1995020344A1 (en) 1994-01-28 1995-08-03 Ep Technologies, Inc. System for examining cardiac tissue electrical characteristics
US5429131A (en) 1994-02-25 1995-07-04 The Regents Of The University Of California Magnetized electrode tip catheter
JP3483929B2 (en) 1994-04-05 2004-01-06 株式会社日立製作所 3D image generation method
ES2216016T3 (en) 1994-06-27 2004-10-16 Boston Scientific Limited NON-LINEAR CONTROL SYSTEMS ON HEATING OF BODY FABRIC AND ABLATION PROCEDURES.
US5722402A (en) 1994-10-11 1998-03-03 Ep Technologies, Inc. Systems and methods for guiding movable electrode elements within multiple-electrode structures
US5876336A (en) 1994-10-11 1999-03-02 Ep Technologies, Inc. Systems and methods for guiding movable electrode elements within multiple-electrode structure
US5810742A (en) 1994-10-24 1998-09-22 Transcan Research & Development Co., Ltd. Tissue characterization based on impedance images and on impedance measurements
US6690963B2 (en) 1995-01-24 2004-02-10 Biosense, Inc. System for determining the location and orientation of an invasive medical instrument
US5688267A (en) 1995-05-01 1997-11-18 Ep Technologies, Inc. Systems and methods for sensing multiple temperature conditions during tissue ablation
US6575969B1 (en) 1995-05-04 2003-06-10 Sherwood Services Ag Cool-tip radiofrequency thermosurgery electrode system for tumor ablation
US5718241A (en) 1995-06-07 1998-02-17 Biosense, Inc. Apparatus and method for treating cardiac arrhythmias with no discrete target
US5954665A (en) 1995-06-07 1999-09-21 Biosense, Inc. Cardiac ablation catheter using correlation measure
US6322558B1 (en) 1995-06-09 2001-11-27 Engineering & Research Associates, Inc. Apparatus and method for predicting ablation depth
US5659624A (en) 1995-09-01 1997-08-19 Fazzari; Rodney J. High speed mass flow food sorting appartus for optically inspecting and sorting bulk food products
US5697377A (en) 1995-11-22 1997-12-16 Medtronic, Inc. Catheter mapping system and method
US5837001A (en) 1995-12-08 1998-11-17 C. R. Bard Radio frequency energy delivery system for multipolar electrode catheters
US5925038A (en) * 1996-01-19 1999-07-20 Ep Technologies, Inc. Expandable-collapsible electrode structures for capacitive coupling to tissue
US5836943A (en) 1996-08-23 1998-11-17 Team Medical, L.L.C. Electrosurgical generator
US5814043A (en) 1996-09-06 1998-09-29 Mentor Ophthalmics, Inc. Bipolar electrosurgical device
US5759159A (en) * 1996-09-25 1998-06-02 Ormco Corporation Method and apparatus for apical detection with complex impedance measurement
US6221070B1 (en) 1996-10-18 2001-04-24 Irvine Biomedical, Inc. Steerable ablation catheter system having disposable shaft
US6035341A (en) 1996-10-31 2000-03-07 Sensormatic Electronics Corporation Multimedia data analysis in intelligent video information management system
US6063078A (en) 1997-03-12 2000-05-16 Medtronic, Inc. Method and apparatus for tissue ablation
US6026323A (en) 1997-03-20 2000-02-15 Polartechnics Limited Tissue diagnostic system
AU6880598A (en) 1997-04-04 1998-10-30 Minnesota Mining And Manufacturing Company Method and apparatus for controlling contact of biomedical electrodes with patient skin
EP1006905A1 (en) 1997-04-11 2000-06-14 Taccor, Inc. Steerable catheter with rotatable tip electrode and method of use
US5944022A (en) 1997-04-28 1999-08-31 American Cardiac Ablation Co. Inc. Catheter positioning system
US6217576B1 (en) 1997-05-19 2001-04-17 Irvine Biomedical Inc. Catheter probe for treating focal atrial fibrillation in pulmonary veins
US5782900A (en) 1997-06-23 1998-07-21 Irvine Biomedical, Inc. Catheter system having safety means
US6490474B1 (en) * 1997-08-01 2002-12-03 Cardiac Pathways Corporation System and method for electrode localization using ultrasound
US5836990A (en) * 1997-09-19 1998-11-17 Medtronic, Inc. Method and apparatus for determining electrode/tissue contact
US6212419B1 (en) 1997-11-12 2001-04-03 Walter M. Blume Method and apparatus using shaped field of repositionable magnet to guide implant
ES2270502T3 (en) 1998-01-22 2007-04-01 Biosense Webster, Inc. INTRACORPORAL MEASUREMENT.
US6402744B2 (en) 1998-02-19 2002-06-11 Curon Medical, Inc. Systems and methods for forming composite lesions to treat dysfunction in sphincters and adjoining tissue regions
US8906010B2 (en) 1998-02-19 2014-12-09 Mederi Therapeutics, Inc. Graphical user interface for association with an electrode structure deployed in contact with a tissue region
US6810281B2 (en) 2000-12-21 2004-10-26 Endovia Medical, Inc. Medical mapping system
SE9801238D0 (en) 1998-04-08 1998-04-08 Siemens Elema Ab Apparatus and method for locating electrically active sites within an animal
US6337994B1 (en) * 1998-04-30 2002-01-08 Johns Hopkins University Surgical needle probe for electrical impedance measurements
US6592581B2 (en) 1998-05-05 2003-07-15 Cardiac Pacemakers, Inc. Preformed steerable catheter with movable outer sleeve and method for use
US6129669A (en) * 1998-05-22 2000-10-10 Scimed Life Systems, Inc. Systems and methods for assessing stability of an ablation electrode in contact with heart tissue
US7263397B2 (en) 1998-06-30 2007-08-28 St. Jude Medical, Atrial Fibrillation Division, Inc. Method and apparatus for catheter navigation and location and mapping in the heart
US6226542B1 (en) 1998-07-24 2001-05-01 Biosense, Inc. Three-dimensional reconstruction of intrabody organs
US6950689B1 (en) 1998-08-03 2005-09-27 Boston Scientific Scimed, Inc. Dynamically alterable three-dimensional graphical model of a body region
US6246896B1 (en) 1998-11-24 2001-06-12 General Electric Company MRI guided ablation system
US6210406B1 (en) * 1998-12-03 2001-04-03 Cordis Webster, Inc. Split tip electrode catheter and signal processing RF ablation system
US6423057B1 (en) * 1999-01-25 2002-07-23 The Arizona Board Of Regents On Behalf Of The University Of Arizona Method and apparatus for monitoring and controlling tissue temperature and lesion formation in radio-frequency ablation procedures
US20020022836A1 (en) 1999-03-05 2002-02-21 Gyrus Medical Limited Electrosurgery system
US7226467B2 (en) 1999-04-09 2007-06-05 Evalve, Inc. Fixation device delivery catheter, systems and methods of use
US6292678B1 (en) 1999-05-13 2001-09-18 Stereotaxis, Inc. Method of magnetically navigating medical devices with magnetic fields and gradients, and medical devices adapted therefor
US6233476B1 (en) 1999-05-18 2001-05-15 Mediguide Ltd. Medical positioning system
US7386339B2 (en) 1999-05-18 2008-06-10 Mediguide Ltd. Medical imaging and navigation system
US6391024B1 (en) * 1999-06-17 2002-05-21 Cardiac Pacemakers, Inc. RF ablation apparatus and method having electrode/tissue contact assessment scheme and electrocardiogram filtering
US6471693B1 (en) 1999-09-10 2002-10-29 Cryocath Technologies Inc. Catheter and system for monitoring tissue contact
US6443894B1 (en) 1999-09-29 2002-09-03 Acuson Corporation Medical diagnostic ultrasound system and method for mapping surface data for three dimensional imaging
US7499745B2 (en) 2000-02-28 2009-03-03 Barbara Ann Karmanos Cancer Institute Multidimensional bioelectrical tissue analyzer
WO2001070117A2 (en) * 2000-03-23 2001-09-27 Microheart, Inc. Pressure sensor for therapeutic delivery device and method
WO2001072201A2 (en) 2000-03-29 2001-10-04 Arizona Board Of Regents Device for creating a neural interface and method for making same
WO2001087172A1 (en) 2000-05-12 2001-11-22 Cardima, Inc. Multi-channel rf energy delivery with coagulum reduction
WO2001087154A1 (en) 2000-05-18 2001-11-22 Nuvasive, Inc. Tissue discrimination and applications in medical procedures
US6445952B1 (en) 2000-05-18 2002-09-03 Medtronic, Inc. Apparatus and method for detecting micro-dislodgment of a pacing lead
US6511478B1 (en) 2000-06-30 2003-01-28 Scimed Life Systems, Inc. Medical probe with reduced number of temperature sensor wires
JP4458630B2 (en) 2000-07-03 2010-04-28 オリンパス株式会社 Heat treatment device
US6569160B1 (en) 2000-07-07 2003-05-27 Biosense, Inc. System and method for detecting electrode-tissue contact
US6546270B1 (en) 2000-07-07 2003-04-08 Biosense, Inc. Multi-electrode catheter, system and method
EP1707116B1 (en) 2000-07-19 2012-06-06 Innovamédica S.A. de C.V. Impedance spectroscopy system for ischemic mucosal damage monitoring in hollow viscous organs
US6962587B2 (en) 2000-07-25 2005-11-08 Rita Medical Systems, Inc. Method for detecting and treating tumors using localized impedance measurement
US6926669B1 (en) 2000-10-10 2005-08-09 Medtronic, Inc. Heart wall ablation/mapping catheter and method
US6475215B1 (en) 2000-10-12 2002-11-05 Naim Erturk Tanrisever Quantum energy surgical device and method
US6666862B2 (en) 2001-03-01 2003-12-23 Cardiac Pacemakers, Inc. Radio frequency ablation system and method linking energy delivery with fluid flow
US6743225B2 (en) 2001-03-27 2004-06-01 Uab Research Foundation Electrophysiologic measure of endpoints for ablation lesions created in fibrillating substrates
US20020177847A1 (en) 2001-03-30 2002-11-28 Long Gary L. Endoscopic ablation system with flexible coupling
AUPR571801A0 (en) 2001-06-15 2001-07-12 Polartechnics Limited Apparatus for tissue type recognition using multiple measurement techniques
US20050010263A1 (en) 2001-07-27 2005-01-13 Patrick Schauerte Neurostimulation unit for immobilizing the heart during cardiosurgical operations
US6907297B2 (en) * 2001-09-28 2005-06-14 Ethicon, Inc. Expandable intracardiac return electrode and method of use
AU2002327779B2 (en) 2001-09-28 2008-06-26 Angiodynamics, Inc. Impedance controlled tissue ablation apparatus and method
US6652518B2 (en) 2001-09-28 2003-11-25 Ethicon, Inc. Transmural ablation tool and method
US6993384B2 (en) 2001-12-04 2006-01-31 Advanced Bionics Corporation Apparatus and method for determining the relative position and orientation of neurostimulation leads
US6813515B2 (en) 2002-01-04 2004-11-02 Dune Medical Devices Ltd. Method and system for examining tissue according to the dielectric properties thereof
DE60315596T2 (en) 2002-01-31 2008-05-15 Loughborough University Enterprises Ltd., Loughborough VENOUS PULSE OXIMETRY
WO2003068055A2 (en) 2002-02-11 2003-08-21 Arthrocare Corporation Electrosurgical apparatus and methods for laparoscopy
US7192427B2 (en) 2002-02-19 2007-03-20 Afx, Inc. Apparatus and method for assessing transmurality of a tissue ablation
US6780182B2 (en) * 2002-05-23 2004-08-24 Adiana, Inc. Catheter placement detection system and operator interface
US7671871B2 (en) 2002-06-21 2010-03-02 Avid Technology, Inc. Graphical user interface for color correction using curves
SE0202288D0 (en) 2002-07-22 2002-07-22 St Jude Medical A heart stimulator
US7106043B1 (en) 2002-09-17 2006-09-12 Bioluminate, Inc. Low capacitance measurement probe
US6755790B2 (en) * 2002-10-14 2004-06-29 Medtronic, Inc. Transseptal access tissue thickness sensing dilator devices and methods for fabricating and using same
US7306593B2 (en) 2002-10-21 2007-12-11 Biosense, Inc. Prediction and assessment of ablation of cardiac tissue
US7001383B2 (en) 2002-10-21 2006-02-21 Biosense, Inc. Real-time monitoring and mapping of ablation lesion formation in the heart
US7041096B2 (en) 2002-10-24 2006-05-09 Synergetics Usa, Inc. Electrosurgical generator apparatus
US7599730B2 (en) 2002-11-19 2009-10-06 Medtronic Navigation, Inc. Navigation system for cardiac therapies
CA2450971A1 (en) * 2002-11-27 2004-05-27 Z-Tech (Canada) Inc. Apparatus and method for determining adequacy of electrode-to-skin contact and electrode quality for bioelectrical measurements
US7048733B2 (en) 2003-09-19 2006-05-23 Baylis Medical Company Inc. Surgical perforation device with curve
US6683280B1 (en) 2003-03-12 2004-01-27 Jeffrey S. Wofford Apparatus and method for prosthesis securement
US20070055142A1 (en) 2003-03-14 2007-03-08 Webler William E Method and apparatus for image guided position tracking during percutaneous procedures
US20040220471A1 (en) 2003-04-29 2004-11-04 Yitzhack Schwartz Method and device for transseptal facilitation using location system
US7137979B2 (en) 2003-05-31 2006-11-21 Tyrell, Inc. Methods and devices for the treatment of skin lesions
US7074218B2 (en) 2003-06-30 2006-07-11 Ethicon, Inc. Multi-modality ablation device
JP2005080720A (en) * 2003-09-05 2005-03-31 Tanita Corp Bioelectric impedance measuring apparatus
US7904174B2 (en) 2003-10-31 2011-03-08 Cardiac Pacemakers, Inc. Implantable leads permitting functional status monitoring
US7819870B2 (en) 2005-10-13 2010-10-26 St. Jude Medical, Atrial Fibrillation Division, Inc. Tissue contact and thermal assessment for brush electrodes
EP1720480A1 (en) 2004-03-05 2006-11-15 Hansen Medical, Inc. Robotic catheter system
US7633502B2 (en) 2004-05-19 2009-12-15 Boston Scientific Scimed, Inc. System and method for graphically representing anatomical orifices and vessels
US7974674B2 (en) 2004-05-28 2011-07-05 St. Jude Medical, Atrial Fibrillation Division, Inc. Robotic surgical system and method for surface modeling
US7197354B2 (en) 2004-06-21 2007-03-27 Mediguide Ltd. System for determining the position and orientation of a catheter
US7245961B2 (en) 2004-07-19 2007-07-17 Hewlett-Packard Development Company, L.P. ECG electrode characterization and compensation
US7742795B2 (en) 2005-03-28 2010-06-22 Minnow Medical, Inc. Tuned RF energy for selective treatment of atheroma and other target tissues and/or structures
US7865236B2 (en) 2004-10-20 2011-01-04 Nervonix, Inc. Active electrode, bio-impedance based, tissue discrimination system and methods of use
US7869865B2 (en) 2005-01-07 2011-01-11 Biosense Webster, Inc. Current-based position sensing
US20080091193A1 (en) 2005-05-16 2008-04-17 James Kauphusman Irrigated ablation catheter having magnetic tip for magnetic field control and guidance
US8027714B2 (en) 2005-05-27 2011-09-27 Magnetecs, Inc. Apparatus and method for shaped magnetic field control for catheter, guidance, control, and imaging
US7776034B2 (en) 2005-06-15 2010-08-17 St. Jude Medical, Atrial Fibrillation Division, Inc. Ablation catheter with adjustable virtual electrode
US7536218B2 (en) 2005-07-15 2009-05-19 Biosense Webster, Inc. Hybrid magnetic-based and impedance-based position sensing
US7610078B2 (en) 2005-08-26 2009-10-27 Boston Scientific Scimed, Inc. System and method of graphically generating anatomical structures using ultrasound echo information
US8355801B2 (en) 2005-09-26 2013-01-15 Biosense Webster, Inc. System and method for measuring esophagus proximity
AU2006305967B2 (en) 2005-10-27 2013-02-07 St. Jude Medical, Atrial Fibrillation Division, Inc. Systems and methods for electrode contact assessment
US7842031B2 (en) * 2005-11-18 2010-11-30 Medtronic Cryocath Lp Bioimpedance measurement system and method
US7565613B2 (en) 2005-12-01 2009-07-21 Microsoft Corporation User interface incorporating data ecosystem awareness
US8406866B2 (en) 2005-12-06 2013-03-26 St. Jude Medical, Atrial Fibrillation Division, Inc. System and method for assessing coupling between an electrode and tissue
WO2007067940A2 (en) 2005-12-06 2007-06-14 St. Jude Medical, Atrial Fibrillation Division, Inc. Assessment of electrode coupling for tissue ablation
US8603084B2 (en) 2005-12-06 2013-12-10 St. Jude Medical, Atrial Fibrillation Division, Inc. System and method for assessing the formation of a lesion in tissue
US10362959B2 (en) 2005-12-06 2019-07-30 St. Jude Medical, Atrial Fibrillation Division, Inc. System and method for assessing the proximity of an electrode to tissue in a body
US8403925B2 (en) 2006-12-06 2013-03-26 St. Jude Medical, Atrial Fibrillation Division, Inc. System and method for assessing lesions in tissue
AU2006321918B2 (en) 2005-12-06 2011-08-25 St. Jude Medical, Atrial Fibrillation Division Inc. Assessment of electrode coupling for tissue ablation
US8449535B2 (en) 2005-12-06 2013-05-28 St. Jude Medical, Atrial Fibrillation Division, Inc. System and method for assessing coupling between an electrode and tissue
US20090177111A1 (en) 2006-12-06 2009-07-09 Miller Stephan P System and method for displaying contact between a catheter and tissue
WO2007075091A2 (en) 2005-12-29 2007-07-05 Rikshospitalet - Radiumhospitalet Hf Method and apparatus for determining local tissue impedance for positioning of a needle
US7996059B2 (en) 2006-03-08 2011-08-09 Biosense Webster, Inc. Esophagus imaging enhancement device
US8147484B2 (en) 2006-10-23 2012-04-03 Biosense Webster, Inc. Apparatus and method for monitoring early formation of steam pop during ablation
IL188262A (en) 2007-01-10 2011-10-31 Mediguide Ltd System and method for superimposing a representation of the tip of a catheter on an image acquired by a moving imager
US10220187B2 (en) * 2010-06-16 2019-03-05 St. Jude Medical, Llc Ablation catheter having flexible tip with multiple flexible electrode segments
US8160690B2 (en) * 2007-06-14 2012-04-17 Hansen Medical, Inc. System and method for determining electrode-tissue contact based on amplitude modulation of sensed signal
WO2009065140A1 (en) 2007-11-16 2009-05-22 St. Jude Medical, Atrial Fibrillation Division, Inc. Device and method for real-time lesion estimation during ablation
US10660690B2 (en) 2007-12-28 2020-05-26 St. Jude Medical, Atrial Fibrillation Division, Inc. System and method for measurement of an impedance using a catheter such as an ablation catheter
US8290578B2 (en) 2007-12-28 2012-10-16 St. Jude Medical, Atrial Fibrillation Division, Inc. Method and apparatus for complex impedance compensation
US8343096B2 (en) 2008-03-27 2013-01-01 St. Jude Medical, Atrial Fibrillation Division, Inc. Robotic catheter system
US7953495B2 (en) 2008-04-30 2011-05-31 Medtronic, Inc. Lead-implant coupling device
US8206385B2 (en) 2008-06-09 2012-06-26 St. Jude Medical, Atrial Fibrillation Division, Inc. Catheter assembly with front-loaded tip and multi-contact connector
US9307931B2 (en) 2008-12-31 2016-04-12 St. Jude Medical, Atrial Fibrillation Division, Inc. Multiple shell construction to emulate chamber contraction with a mapping system
US20120158011A1 (en) 2010-12-16 2012-06-21 Sandhu Kulbir S Proximity sensor interface in a robotic catheter system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673704A (en) * 1994-01-28 1997-10-07 Marchlinski; Francis E. Method of using endocardial impedance for determining electrode-tissue contact
US20020068931A1 (en) * 1999-06-04 2002-06-06 Engineering & Research Associates, Inc. Apparatus and method for real time determination of materials' electrical properties

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