WO1994024932B1 - Systeme de mesure d'impedance a des fins diagnostiques - Google Patents

Systeme de mesure d'impedance a des fins diagnostiques

Info

Publication number
WO1994024932B1
WO1994024932B1 PCT/US1994/004035 US9404035W WO9424932B1 WO 1994024932 B1 WO1994024932 B1 WO 1994024932B1 US 9404035 W US9404035 W US 9404035W WO 9424932 B1 WO9424932 B1 WO 9424932B1
Authority
WO
WIPO (PCT)
Prior art keywords
impedance
reference electrodes
signals
electrodes
signal
Prior art date
Application number
PCT/US1994/004035
Other languages
English (en)
Other versions
WO1994024932A1 (fr
Filing date
Publication date
Priority claimed from US08/056,364 external-priority patent/US5335668A/en
Application filed filed Critical
Priority to AU66655/94A priority Critical patent/AU6665594A/en
Publication of WO1994024932A1 publication Critical patent/WO1994024932A1/fr
Publication of WO1994024932B1 publication Critical patent/WO1994024932B1/fr

Links

Abstract

Système de mesure d'impédance à des fins diagnostiques (10) doté d'une sonde allongée (12) pénétrant dans les tissus et présentant autour de sa partie distale une pluralité d'électrodes de référence axialement espacées (20A-C). Les électrodes de référence (20A-C) mesurent l'impédance des tissus biologiques adjacents à chaque électrode. Un comparateur (42) compare l'impédance mesurée d'au moins des première et deuxième électrodes de référence (20A-C), et génère un premier signal indiquant la différence d'impédance entre les deux électrodes. Ledit comparateur compare l'impédance mesurée entre la première ou la deuxième électrode et une électrode supplémentaire, et génère un deuxième signal indiquant la différence d'impédance entre les deux électrodes. Ledit comparateur compare les premier et deuxième signaux et génère un troisième signal indiquant la différence d'impédance entre les deux signaux. Le troisième signal communique avec un élément d'évaluation de signaux qui détermine la position relative de la sonde (12).
PCT/US1994/004035 1993-04-30 1994-04-13 Systeme de mesure d'impedance a des fins diagnostiques WO1994024932A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU66655/94A AU6665594A (en) 1993-04-30 1994-04-13 Diagnostic impedance measuring system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/056,364 1993-04-30
US08/056,364 US5335668A (en) 1993-04-30 1993-04-30 Diagnostic impedance measuring system for an insufflation needle

Publications (2)

Publication Number Publication Date
WO1994024932A1 WO1994024932A1 (fr) 1994-11-10
WO1994024932B1 true WO1994024932B1 (fr) 1994-12-22

Family

ID=22003907

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/004035 WO1994024932A1 (fr) 1993-04-30 1994-04-13 Systeme de mesure d'impedance a des fins diagnostiques

Country Status (3)

Country Link
US (1) US5335668A (fr)
AU (1) AU6665594A (fr)
WO (1) WO1994024932A1 (fr)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6102046A (en) * 1995-11-22 2000-08-15 Arthrocare Corporation Systems and methods for electrosurgical tissue revascularization
US5683366A (en) * 1992-01-07 1997-11-04 Arthrocare Corporation System and method for electrosurgical tissue canalization
US5697882A (en) 1992-01-07 1997-12-16 Arthrocare Corporation System and method for electrosurgical cutting and ablation
US5807393A (en) * 1992-12-22 1998-09-15 Ethicon Endo-Surgery, Inc. Surgical tissue treating device with locking mechanism
US5558671A (en) * 1993-07-22 1996-09-24 Yates; David C. Impedance feedback monitor for electrosurgical instrument
US5693051A (en) * 1993-07-22 1997-12-02 Ethicon Endo-Surgery, Inc. Electrosurgical hemostatic device with adaptive electrodes
US5997533A (en) * 1998-01-30 1999-12-07 Ethicon Endo-Surgery, Inc. RF pressure activated instrument
US6337994B1 (en) * 1998-04-30 2002-01-08 Johns Hopkins University Surgical needle probe for electrical impedance measurements
US7276063B2 (en) 1998-08-11 2007-10-02 Arthrocare Corporation Instrument for electrosurgical tissue treatment
ES2395310T3 (es) * 2000-07-19 2013-02-11 Critical Perfusion Inc. Catéter para supervisar daño de mucosa isquémica en órganos viscosos huecos
US6564079B1 (en) 2000-07-27 2003-05-13 Ckm Diagnostics, Inc. Electrode array and skin attachment system for noninvasive nerve location and imaging device
US6714806B2 (en) * 2000-09-20 2004-03-30 Medtronic, Inc. System and method for determining tissue contact of an implantable medical device within a body
US6709380B2 (en) * 2001-05-31 2004-03-23 Neoseed Technology Llc Brachytherapy needle with impedance measurement apparatus and methods of use
US6723040B2 (en) * 2001-08-20 2004-04-20 International Development Consultants Bowel probe & method for controlling bowel incontinence
US7429258B2 (en) * 2001-10-26 2008-09-30 Massachusetts Institute Of Technology Microneedle transport device
US6843766B1 (en) * 2002-12-21 2005-01-18 X-L Synergy Fecal incontinence management device
EP1651127B1 (fr) 2003-07-16 2012-10-31 Arthrocare Corporation Appareil rotatif d'electrochirurgie
US20050288566A1 (en) * 2004-04-30 2005-12-29 Levendusky Joseph A Apparatus with partially insulated needle for measuring tissue impedance
US20060079841A1 (en) * 2004-10-07 2006-04-13 University Technologies International Inc. Rapid insufflation drug compartment
US7885707B2 (en) * 2005-09-15 2011-02-08 St. Jude Medical, Atrial Fibrillation Division, Inc. Method of scaling navigation signals to account for impedance drift in tissue
WO2007075091A2 (fr) * 2005-12-29 2007-07-05 Rikshospitalet - Radiumhospitalet Hf Procede et appareil de determination d’impedance tissulaire locale pour positionner une aiguille
US9585586B2 (en) 2006-12-29 2017-03-07 St. Jude Medical, Atrial Fibrillation Division, Inc. Navigational reference dislodgement detection method and system
US9220439B2 (en) 2006-12-29 2015-12-29 St. Jude Medical, Atrial Fibrillation Division, Inc. Navigational reference dislodgement detection method and system
US7987001B2 (en) 2007-01-25 2011-07-26 Warsaw Orthopedic, Inc. Surgical navigational and neuromonitoring instrument
US8374673B2 (en) 2007-01-25 2013-02-12 Warsaw Orthopedic, Inc. Integrated surgical navigational and neuromonitoring system having automated surgical assistance and control
SE532140C2 (sv) * 2007-09-28 2009-11-03 Clinical Laserthermia Systems Anordning för positionering av implanterbara ledningar
FI20075978A0 (fi) * 2007-12-31 2007-12-31 Katja Paassilta Järjestely ja menetelmä
US8747400B2 (en) 2008-08-13 2014-06-10 Arthrocare Corporation Systems and methods for screen electrode securement
FR2939199B1 (fr) * 2008-12-02 2011-02-11 C2 Diagnostics Procede et dispositif de cytometrie en flux sans fluide de gainage
US8355799B2 (en) 2008-12-12 2013-01-15 Arthrocare Corporation Systems and methods for limiting joint temperature
US8317786B2 (en) 2009-09-25 2012-11-27 AthroCare Corporation System, method and apparatus for electrosurgical instrument with movable suction sheath
US8323279B2 (en) 2009-09-25 2012-12-04 Arthocare Corporation System, method and apparatus for electrosurgical instrument with movable fluid delivery sheath
US8845631B2 (en) 2010-04-28 2014-09-30 Medtronic Ablation Frontiers Llc Systems and methods of performing medical procedures
US8696659B2 (en) 2010-04-30 2014-04-15 Arthrocare Corporation Electrosurgical system and method having enhanced temperature measurement
US8700133B2 (en) 2012-06-18 2014-04-15 Smart Iv Llc Apparatus and method for monitoring catheter insertion
US9597482B2 (en) 2012-06-18 2017-03-21 Smart Iv Llc Apparatus and method for monitoring catheter insertion
US20150216442A1 (en) * 2012-07-24 2015-08-06 Lev Lavy Multilayer coaxial probe for impedance spatial contrast measurement
PL226423B1 (pl) * 2012-12-21 2017-07-31 Bumar Elektronika Spółka Akcyjna Układ pomiarowy sondy
US9526556B2 (en) 2014-02-28 2016-12-27 Arthrocare Corporation Systems and methods systems related to electrosurgical wands with screen electrodes
US9943682B2 (en) 2014-05-06 2018-04-17 Medtronic, Inc. Method and apparatus for determining suitability of a lead implant location
US9597142B2 (en) 2014-07-24 2017-03-21 Arthrocare Corporation Method and system related to electrosurgical procedures
US9649148B2 (en) 2014-07-24 2017-05-16 Arthrocare Corporation Electrosurgical system and method having enhanced arc prevention
US10293129B2 (en) 2016-03-07 2019-05-21 Hansa Medical Products, Inc. Apparatus and method for forming an opening in patient's tissue
US10143839B1 (en) 2017-07-05 2018-12-04 Medtronic, Inc. Lead navigation guidance
US11701494B2 (en) 2017-07-07 2023-07-18 University of Pittsburgh—of the Commonwealth System of Higher Education Catheter insertion systems
US10898720B2 (en) 2017-10-17 2021-01-26 Medtronic, Inc. Impedance sensing
US11547787B2 (en) * 2018-05-10 2023-01-10 University of Pittsburgh—of the Commonwealth System of Higher Education Sensing cannula systems
US11246637B2 (en) * 2020-05-11 2022-02-15 Alphatec Spine, Inc. Stimulating targeting needle

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480003A (en) * 1967-02-03 1969-11-25 Battelle Development Corp Apparatus for measuring esophageal motility
US3913583A (en) * 1974-06-03 1975-10-21 Sybron Corp Control circuit for electrosurgical units
DE2504280C3 (de) * 1975-02-01 1980-08-28 Hans Heinrich Prof. Dr. 8035 Gauting Meinke Vorrichtung zum Schneiden und/oder Koagulieren menschlichen Gewebes mit Hochfrequenzstrom
JPS5925363Y2 (ja) * 1976-03-05 1984-07-25 株式会社デントロニクス 歯科における根管長測定装置
US4126137A (en) * 1977-01-21 1978-11-21 Minnesota Mining And Manufacturing Company Electrosurgical unit
DE2801833C2 (de) * 1978-01-17 1979-11-29 Aesculap-Werke Ag Vormals Jetter & Scheerer, 7200 Tuttlingen Elektrochirurgische Schneidvorrichtung
DE3120102A1 (de) * 1981-05-20 1982-12-09 F.L. Fischer GmbH & Co, 7800 Freiburg Anordnung zur hochfrequenzkoagulation von eiweiss fuer chirurgische zwecke
US4535773A (en) * 1982-03-26 1985-08-20 Inbae Yoon Safety puncturing instrument and method
US4498481A (en) * 1982-09-28 1985-02-12 Lemke Judith K Estrus cycle monitoring system
EP0126814B1 (fr) * 1983-05-24 1988-12-21 Sien-Shih Chang Dispositif pour contrôler un appareil d'électrochirurgie
US4658819A (en) * 1983-09-13 1987-04-21 Valleylab, Inc. Electrosurgical generator
DE3413631A1 (de) * 1984-04-11 1985-10-24 Semm, Kurt, Prof. Dr.Med., 2300 Kiel Monofile vorrichtung zum insufflieren von gas
US4630615A (en) * 1984-05-21 1986-12-23 Cordis Corporation Apparatus for measuring impedance
US4729385A (en) * 1985-10-23 1988-03-08 American Mediscan, Inc. Probe and method of use for detecting abnormal tissues
US4712544A (en) * 1986-02-12 1987-12-15 Castle Company Electrosurgical generator
DE3611018C1 (de) * 1986-03-27 1987-06-19 Wiest Peter P Vorrichtung zum Insufflieren von Gas
EP0249823B1 (fr) * 1986-06-16 1991-12-18 Pacesetter AB Dispositif pour le contrôle d'un stimulateur cardiaque intracorporel utilisant la mesure de l'impedance de tissus corporels
DE3718717A1 (de) * 1987-06-04 1988-12-22 Wolf Gmbh Richard Geraet zum insufflieren von gas in eine koerperhoehle
US4934377A (en) * 1987-11-24 1990-06-19 The Cleveland Clinic Foundation Intraoperative neuroelectrophysiological monitoring system
US4869717A (en) * 1988-04-25 1989-09-26 Adair Edwin Lloyd Gas insufflation needle with instrument port
DE3836349A1 (de) * 1988-10-25 1990-05-03 Forschungsgesellschaft Fuer Bi Katheter zur messung von motilitaet und peristaltik in schlauchfoermigen, ihren inhalt transportierenden organen mittels simultaner multipler impedanzmessung
US4911174A (en) * 1989-02-13 1990-03-27 Cardiac Pacemakers, Inc. Method for matching the sense length of an impedance measuring catheter to a ventricular chamber
CA2065711A1 (fr) * 1991-04-10 1992-10-11 Walter S. Hennig Dispositif dissipateur d'energie
US5190517A (en) * 1991-06-06 1993-03-02 Valleylab Inc. Electrosurgical and ultrasonic surgical system

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