WO2002036197A3 - Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart - Google Patents
Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart Download PDFInfo
- Publication number
- WO2002036197A3 WO2002036197A3 PCT/US2001/047663 US0147663W WO0236197A3 WO 2002036197 A3 WO2002036197 A3 WO 2002036197A3 US 0147663 W US0147663 W US 0147663W WO 0236197 A3 WO0236197 A3 WO 0236197A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- source impedance
- signal
- cardiac electrical
- measuring
- electrical signal
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/362—Heart stimulators
- A61N1/37—Monitoring; Protecting
- A61N1/3702—Physiological parameters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/362—Heart stimulators
- A61N1/365—Heart stimulators controlled by a physiological parameter, e.g. heart potential
- A61N1/36514—Heart stimulators controlled by a physiological parameter, e.g. heart potential controlled by a physiological quantity other than heart potential, e.g. blood pressure
- A61N1/36521—Heart stimulators controlled by a physiological parameter, e.g. heart potential controlled by a physiological quantity other than heart potential, e.g. blood pressure the parameter being derived from measurement of an electrical impedance
Abstract
A method of measuring a source impedance of at least one cardiac electrical signal in a mammalian heart is provided. A first amplifier system is operated. A first signal from a chamber of the heart is received. The first signal is passed through a first amplifier. A second amplifier system is then operated. A second signal from the chamber of the heart is received. The second signal is passed through a second amplifier. Finally, the source impedance of at least one cardiac electrical signal is calculated. The source impedance is based on the amplified first signal and the amplified second signal.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01990966A EP1331968B1 (en) | 2000-11-06 | 2001-11-06 | Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart |
DE60130132T DE60130132T2 (en) | 2000-11-06 | 2001-11-06 | METHOD AND SYSTEM FOR MEASURING A SOURCE IMPEDANCE OF AT LEAST ONE ELECTRONIC HEART SIGNAL OF ANIMALS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/705,806 | 2000-11-06 | ||
US09/705,806 US6629931B1 (en) | 2000-11-06 | 2000-11-06 | Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002036197A2 WO2002036197A2 (en) | 2002-05-10 |
WO2002036197A3 true WO2002036197A3 (en) | 2003-01-23 |
Family
ID=24835024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2001/047663 WO2002036197A2 (en) | 2000-11-06 | 2001-11-06 | Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart |
Country Status (4)
Country | Link |
---|---|
US (1) | US6629931B1 (en) |
EP (1) | EP1331968B1 (en) |
DE (1) | DE60130132T2 (en) |
WO (1) | WO2002036197A2 (en) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10214459A1 (en) * | 2001-04-05 | 2003-04-30 | Univ Ilmenau Tech | Arrangement and method for the detection of signals of biological origin |
AU2007203300B8 (en) * | 2001-04-05 | 2011-08-18 | Neuroconn Gmbh | Arrangement and Method for Recording Signals of Biological Origin |
US7289851B2 (en) * | 2003-12-04 | 2007-10-30 | Medtronic, Inc. | Method and apparatus for identifying lead-related conditions using impedance trends and oversensing criteria |
US7532928B2 (en) * | 2006-02-15 | 2009-05-12 | Biotronik Crm Patent Ag | Atrial defibrillator |
WO2009148429A1 (en) | 2008-06-02 | 2009-12-10 | Medtronic, Inc. | Electrogram storage for suspected non-physiological episodes |
EP2320999A1 (en) * | 2008-06-02 | 2011-05-18 | Medtronic, Inc. | Sensing integrity determination based on cardiovascular pressure |
WO2009148425A1 (en) * | 2008-06-02 | 2009-12-10 | Medtronic, Inc. | Impedance variability analysis to identify lead-related conditions |
US20090299421A1 (en) * | 2008-06-02 | 2009-12-03 | Medtronic, Inc. | Evaluation of implantable medical device sensing integrity based on evoked signals |
US9037240B2 (en) * | 2008-06-02 | 2015-05-19 | Medtronic, Inc. | Electrode lead integrity reports |
US7974690B2 (en) * | 2008-06-30 | 2011-07-05 | Medtronic, Inc. | Lead integrity testing during suspected tachyarrhythmias |
US9522277B2 (en) * | 2008-07-28 | 2016-12-20 | Medtronic, Inc. | Lead integrity testing triggered by sensed signal saturation |
US7953488B2 (en) * | 2008-07-31 | 2011-05-31 | Medtronic, Inc. | Pre-qualification of an alternate sensing configuration |
US8078277B2 (en) | 2008-10-29 | 2011-12-13 | Medtronic, Inc. | Identification and remediation of oversensed cardiac events using far-field electrograms |
US10118042B2 (en) | 2008-10-31 | 2018-11-06 | Medtronic, Inc. | Lead integrity testing triggered by sensed asystole |
US8396543B2 (en) * | 2010-01-28 | 2013-03-12 | Medtronic, Inc. | Storage of data for evaluation of lead integrity |
US9132275B2 (en) | 2010-11-18 | 2015-09-15 | Cardiac Pacemakers, Inc. | Automatic determination of chronotropic incompetence using atrial pacing at rest |
US8774909B2 (en) | 2011-09-26 | 2014-07-08 | Medtronic, Inc. | Episode classifier algorithm |
US8437840B2 (en) | 2011-09-26 | 2013-05-07 | Medtronic, Inc. | Episode classifier algorithm |
US8744560B2 (en) | 2011-09-30 | 2014-06-03 | Medtronic, Inc. | Electrogram summary |
US9668668B2 (en) | 2011-09-30 | 2017-06-06 | Medtronic, Inc. | Electrogram summary |
US8521281B2 (en) | 2011-10-14 | 2013-08-27 | Medtronic, Inc. | Electrogram classification algorithm |
US8886296B2 (en) | 2011-10-14 | 2014-11-11 | Medtronic, Inc. | T-wave oversensing |
US9214196B2 (en) * | 2012-02-16 | 2015-12-15 | Vital Connect, Inc. | System and method for powering a wireless sensor device |
US9446247B2 (en) * | 2013-05-21 | 2016-09-20 | Mr3 Medical, Llc | System and method for stimulating the heart using sub-threshold biphasic stimulation |
Citations (7)
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---|---|---|---|---|
US4023046A (en) * | 1975-08-28 | 1977-05-10 | Vitatron Medical B.V. | Low current drain amplifier incorporating means for minimizing sensitivity drift |
US4275737A (en) * | 1978-11-06 | 1981-06-30 | Medtronic, Inc. | Demand cardiac pacemaker having reduced polarity disparity |
US4694830A (en) * | 1985-10-04 | 1987-09-22 | Siemens Aktiengesellschaft | Heart pacemaker with respiratory signal generation capability |
WO1992002274A1 (en) * | 1990-08-10 | 1992-02-20 | Medtronic, Inc. | Field density sensor for detecting cardiac depolarizations |
US5480441A (en) * | 1994-03-30 | 1996-01-02 | Medtronic, Inc. | Rate-responsive heart pacemaker |
US5507785A (en) * | 1994-12-21 | 1996-04-16 | Intermedics, Inc. | Rate responsive cardiac pacemaker with biphasic impedance sensing and method |
US5603725A (en) * | 1992-09-17 | 1997-02-18 | Biotronik Mess- Und Therapiegeraete Gmbh Ingenieurbuero Berlin | Circuit for measuring impredance in the heart |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3989958A (en) | 1975-08-28 | 1976-11-02 | Vitatron Medical B.V. | Low current drain amplifier with sensitivity adjustment means |
US4043347A (en) | 1975-08-28 | 1977-08-23 | Vitatron Medical B.V. | Multiple-function demand pacer with low current drain |
US3989959A (en) | 1975-08-28 | 1976-11-02 | Vitatron Medical B.V. | Low current drain amplifier incorporating feedback means for establishing sensitivity |
US4226245A (en) * | 1978-11-06 | 1980-10-07 | Medtronic, Inc. | System for detecting heart pacemaker pulses |
US4702253A (en) | 1985-10-15 | 1987-10-27 | Telectronics N.V. | Metabolic-demand pacemaker and method of using the same to determine minute volume |
DE3732640C1 (en) | 1987-09-28 | 1989-05-18 | Alt Eckhard | Medical device for determining physiological functional parameters |
US5411529A (en) * | 1990-08-10 | 1995-05-02 | Medtronic, Inc. | Waveform discriminator for cardiac stimulation devices |
US5282840A (en) | 1992-03-26 | 1994-02-01 | Medtronic, Inc. | Multiple frequency impedance measurement system |
US5431687A (en) | 1993-04-09 | 1995-07-11 | Angeion Corporation | Impedance timed defibrillation system |
US5577509A (en) | 1994-01-28 | 1996-11-26 | Ep Technologies, Inc. | Systems and methods for examining the electrical characteristics and timing of electrical events in cardiac tissue |
US5562711A (en) | 1994-11-30 | 1996-10-08 | Medtronic, Inc. | Method and apparatus for rate-responsive cardiac pacing |
US6044294A (en) * | 1995-12-15 | 2000-03-28 | Pacesetter, Inc. | Methods and apparatus for measuring impedance in the body |
US5713935A (en) | 1996-08-23 | 1998-02-03 | Sulzer Intermedics Inc. | Method and apparatus for monitored biphasic cardiac impedance sensing |
US6269264B1 (en) * | 1996-12-13 | 2001-07-31 | Pacesetter, Inc. | Method for measuring impedance in the body |
US6141585A (en) * | 1998-05-08 | 2000-10-31 | Intermedics Inc. | Implantable cardiac stimulator with electrode-tissue interface characterization |
-
2000
- 2000-11-06 US US09/705,806 patent/US6629931B1/en not_active Expired - Lifetime
-
2001
- 2001-11-06 EP EP01990966A patent/EP1331968B1/en not_active Expired - Lifetime
- 2001-11-06 WO PCT/US2001/047663 patent/WO2002036197A2/en active IP Right Grant
- 2001-11-06 DE DE60130132T patent/DE60130132T2/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4023046A (en) * | 1975-08-28 | 1977-05-10 | Vitatron Medical B.V. | Low current drain amplifier incorporating means for minimizing sensitivity drift |
US4275737A (en) * | 1978-11-06 | 1981-06-30 | Medtronic, Inc. | Demand cardiac pacemaker having reduced polarity disparity |
US4694830A (en) * | 1985-10-04 | 1987-09-22 | Siemens Aktiengesellschaft | Heart pacemaker with respiratory signal generation capability |
WO1992002274A1 (en) * | 1990-08-10 | 1992-02-20 | Medtronic, Inc. | Field density sensor for detecting cardiac depolarizations |
US5603725A (en) * | 1992-09-17 | 1997-02-18 | Biotronik Mess- Und Therapiegeraete Gmbh Ingenieurbuero Berlin | Circuit for measuring impredance in the heart |
US5480441A (en) * | 1994-03-30 | 1996-01-02 | Medtronic, Inc. | Rate-responsive heart pacemaker |
US5507785A (en) * | 1994-12-21 | 1996-04-16 | Intermedics, Inc. | Rate responsive cardiac pacemaker with biphasic impedance sensing and method |
Also Published As
Publication number | Publication date |
---|---|
EP1331968B1 (en) | 2007-08-22 |
EP1331968A2 (en) | 2003-08-06 |
WO2002036197A2 (en) | 2002-05-10 |
DE60130132T2 (en) | 2007-12-13 |
DE60130132D1 (en) | 2007-10-04 |
US6629931B1 (en) | 2003-10-07 |
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