Surgery – Diagnostic testing – Measuring electrical impedance or conductance of body portion
Reexamination Certificate
2005-02-15
2008-11-04
Schaetzle, Kennedy J (Department: 3766)
Surgery
Diagnostic testing
Measuring electrical impedance or conductance of body portion
C600S301000
Reexamination Certificate
active
07447543
ABSTRACT:
A method and apparatus for measuring impedance for pathology assessment in a living being using convergent bioelectric lead fields is disclosed, including injecting a current between first and second electrodes implanted in a body of a living being, where the first and second electrodes define a first electric lead field oriented between the first and second electrodes. A potential difference is measured between third and fourth electrodes implanted in the body, where the potential difference results from the current injected between the first and second electrodes. The third and fourth electrodes define a second electric lead field oriented between the third and fourth electrodes. The first and second electric lead fields converge near an assessment site within the body, but are substantially separated otherwise. An impedance value is calculated based on the potential difference and the current injection, and is used to assess a pathology near the assessment site.
REFERENCES:
patent: 3340867 (1967-09-01), Kubicek et al.
patent: 4540002 (1985-09-01), Atlas
patent: 4905705 (1990-03-01), Kizakevich et al.
patent: 4932408 (1990-06-01), Schaldach
patent: 5154170 (1992-10-01), Bennett et al.
patent: 5199428 (1993-04-01), Obel et al.
patent: 5246008 (1993-09-01), Mueller
patent: 5282840 (1994-02-01), Hudrlik
patent: 5358519 (1994-10-01), Grandjean
patent: 5365426 (1994-11-01), Siegel et al.
patent: 5438987 (1995-08-01), Thacker et al.
patent: 5454377 (1995-10-01), Dzwonczyk et al.
patent: 5501702 (1996-03-01), Plicchi et al.
patent: 5556421 (1996-09-01), Prutchi et al.
patent: 5807272 (1998-09-01), Kun et al.
patent: 5814076 (1998-09-01), Brownlee
patent: 5824029 (1998-10-01), Weijand et al.
patent: 5876353 (1999-03-01), Riff
patent: 5931858 (1999-08-01), Kadhiresan et al.
patent: 5957861 (1999-09-01), Combs et al.
patent: 5974340 (1999-10-01), Kadhiresan
patent: 6021350 (2000-02-01), Mathson
patent: 6038469 (2000-03-01), Karlsson et al.
patent: 6070100 (2000-05-01), Bakels et al.
patent: 6128526 (2000-10-01), Stadler et al.
patent: 6161042 (2000-12-01), Hartley et al.
patent: 6223079 (2001-04-01), Bakels et al.
patent: 6233486 (2001-05-01), Ekwall et al.
patent: 6256538 (2001-07-01), Ekwall
patent: 6264606 (2001-07-01), Ekwall et al.
patent: 6269264 (2001-07-01), Weyant et al.
patent: 6277078 (2001-08-01), Porat et al.
patent: 6278894 (2001-08-01), Salo et al.
patent: 6360123 (2002-03-01), Kimchi et al.
patent: 6381493 (2002-04-01), Stadler et al.
patent: 6424860 (2002-07-01), Karlsson et al.
patent: 6434408 (2002-08-01), Mulligan et al.
patent: 6454719 (2002-09-01), Greenhut
patent: 6473640 (2002-10-01), Erlebacher
patent: 6512949 (2003-01-01), Combs et al.
patent: 6539261 (2003-03-01), Dal Molin
patent: 6564099 (2003-05-01), Prutchi et al.
patent: 6595927 (2003-07-01), Pitts-Crick et al.
patent: 6604000 (2003-08-01), Lu
patent: 6788972 (2004-09-01), Prutchi et al.
patent: 2001/0020138 (2001-09-01), Ishigooka et al.
patent: 2002/0002389 (2002-01-01), Bradley et al.
patent: 2002/0072686 (2002-06-01), Hoey et al.
patent: 2002/0115939 (2002-08-01), Mulligan et al.
patent: 2002/0123674 (2002-09-01), Plicchi et al.
patent: 2002/0143368 (2002-10-01), Bakels et al.
patent: 2002/0161310 (2002-10-01), Daum
patent: 2003/0023184 (2003-01-01), Pitts-Crick et al.
patent: 2003/0028221 (2003-02-01), Zhu et al.
patent: 2003/0045805 (2003-03-01), Sheldon et al.
patent: 2003/0078619 (2003-04-01), Bonnet et al.
patent: 2003/0093125 (2003-05-01), Zhu et al.
patent: 2003/0149368 (2003-08-01), Hennemann et al.
patent: 2003/0204209 (2003-10-01), Burnes et al.
patent: 2004/0087870 (2004-05-01), Jarverud
patent: 2004/0215097 (2004-10-01), Wang
Bocchiardo et al., “Biventricular Pacing Optimization Using Impedance Feasibility Study,”Europace Supplements, 2002, 3:A39, Abstract No. 54/3.
Bronzino (ed.), “Chapter 73—Bioelectric Impedance Measurements,”The Biomedical Engineering Handbook, Second Edition, 2000, 1:73-1-73-8.
Cole et al., “Correlation of Impedance Minute Ventilation with Measured Minute Ventilation in a Rate Responsive Pacemaker,”PACE, 2001, 24:989-993.
Duru et al., “Rate Responsive Pacing Using Transthoracic Impedance Minute Ventilation Sensors: A Multicenter Study on Calibration Stability,”PACE, 2002, 25(12):1679-1684.
Gersing et al., “Measurement of Electrical Impedance in Organs—Fundamentals and Methodology,”Biomed. Technik, 1991, 36(4):70-77.
Hauck, “A Minute Ventilation Sensor Derived from Intra-Thoracic Electric Impedance as a Cardiac Pacemaker Rate Modulator,” A Thesis Submitted to the Faculty of the Graduate School of the University of Minnesota, Department of Electrical Engineering, Jun. 1993, 148 pgs.
Malmivuo and Plonsey,Bioelectromagnetism: Principles and Applications of Bioelectric and Biomagnetic Fields, 1995, sections 11.6.2 and 25.2.1, beginning at pp. 202 and 405, respectively.
Nappholtz et al., “Electrode Configurations for a Respiratory Impedance Measurement Suitable for Rate Responsive Pacing,”PACE, 1986, Part II, vol. 9, pp. 960-964.
Patterson, “Possible technique to measure ventricular volume using electrical impedance measurements with an oesophageal electrode,”Med. &Biol. Eng. &Comput., 1987, 25:677-679.
Plicchi et al., “Monitoring Intrapulmonary Bioelectric Impedance During Active Volume Overloading,”Europace Supplements, 2002, 3:A39, Abstract No. 54/6.
Salazar et al., “Transmural Versus NontransmuralIn SituElectrical Impedance Spectrum for Healthy, Ischemic, and Healed Myocardium,”IEEE Transactions on Biomedical Engineering, 2004, 51(8):1421-1427.
Schwartzman et al., “Electrical Impedance Properties of Normal and Chronically Infarcted Left Ventricular Myocardium,”Journal of Interventional Cardiac Electrophysiology, 1999, 3:213-224.
Van De Water et al., “Monitoring the Chest with Impedance,”Chest, 1973, 64(5):597-603.
Wang et al., “Feasibility of Predicting CHF Hospitalization Using Pacemaker-Based Impedance Sensor in CHF Patients,”J. Cardiac Failure, 2002, 8(4 Suppl.):S81, Abstract No. 297.
Wang et al., “Feasibility of Monitoring Thoracic Congestion with Impedance Measured from an ICD Lead System in a Chronic Heart Failure Dog Model,”PACE, NASPE Abstracts, 2000, Part II, vol. 23, No. 4, p. 612, Abstract No. 237.
Yu et al., “Early Warning of CHF Hospitalization by Intra-Thoracic Impedance Measurement in CHF Patients with Pacemakers,”PACE, NASPE Abstracts, 2002, Part II, vol. 25, No. 4, p. 527, Abstract No. 19.
“Single-chamber cardiac pacing with two forms of respiration-controlled rate-responsive pacemaker” by Lau et al.,Chest, Official publication of the American College of Chest Physicians, pp. 352-358, 1989.
Belalcazar Andres
Patterson Robert
Fish & Richardson P.C.
Regents of the University of Minnesota
Schaetzle Kennedy J
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