Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2007-05-29
2007-05-29
Evanisko, George R. (Department: 3762)
Surgery
Diagnostic testing
Cardiovascular
C600S516000
Reexamination Certificate
active
10603398
ABSTRACT:
A technique is provided for detecting episodes of cardiac ischemia based on an examination of the total energy of T-waves. Since cardiac ischemia is often a precursor to acute myocardial infarction (AMI) or ventricular fibrillation (VF), the technique thereby provides a method for predicting the possible onset of AMI or VF. Briefly, the technique integrates internal electrical cardiac signals occurring during T-waves and then compares the result against a running average. If the result exceeds the average by some predetermined amount, ischemia is thereby detected and a warning signal is provided to the patient. The maximum slope of the T-wave is also exploited. Techniques are also set forth herein for reliably detecting T-waves, which help prevent P-waves from being misinterpreted as T-waves on unipolar sensing channels. The T-wave detection technique may be used in conjunction with ischemia detection or for other purposes.
REFERENCES:
patent: 3828768 (1974-08-01), Douglas
patent: 4674509 (1987-06-01), DeCote, Jr.
patent: 4679144 (1987-07-01), Cox et al.
patent: 4799486 (1989-01-01), DuFault
patent: 4974162 (1990-11-01), Siegel et al.
patent: 5113869 (1992-05-01), Nappholz et al.
patent: 5135004 (1992-08-01), Adams et al.
patent: 5148812 (1992-09-01), Verrier et al.
patent: 5159932 (1992-11-01), Zanetti et al.
patent: 5199428 (1993-04-01), Obel et al.
patent: 5203326 (1993-04-01), Collins
patent: 5213106 (1993-05-01), Lerner
patent: 5313953 (1994-05-01), Yomtov et al.
patent: 5365426 (1994-11-01), Siegel et al.
patent: 5531768 (1996-07-01), Alferness
patent: 5560368 (1996-10-01), Berger
patent: 5560370 (1996-10-01), Verrier et al.
patent: 5643327 (1997-07-01), Dawson et al.
patent: 5792065 (1998-08-01), Xue et al.
patent: 5978710 (1999-11-01), Prutchi et al.
patent: 6016443 (2000-01-01), Ekwall et al.
patent: 6021350 (2000-02-01), Mathson
patent: 6081747 (2000-06-01), Levine et al.
patent: 6108577 (2000-08-01), Benser
patent: 6112116 (2000-08-01), Fischell et al.
patent: 6115628 (2000-09-01), Stadler et al.
patent: 6128526 (2000-10-01), Stadler et al.
patent: 6155267 (2000-12-01), Nelson
patent: 6233486 (2001-05-01), Ekwall et al.
patent: 6256538 (2001-07-01), Ekwall
patent: 6264606 (2001-07-01), Ekwall et al.
patent: 6272379 (2001-08-01), Fischell et al.
patent: 6361503 (2002-03-01), Starobin et al.
patent: 6381493 (2002-04-01), Stadler et al.
patent: 6501983 (2002-12-01), Natarajan et al.
patent: 6539259 (2003-03-01), Weinberg et al.
patent: 6604000 (2003-08-01), Lu
patent: 6609023 (2003-08-01), Fischell et al.
patent: 6615075 (2003-09-01), Mlynash et al.
patent: 6823213 (2004-11-01), Norris et al.
patent: 2002/0151807 (2002-10-01), Goldin
patent: 2003/0013974 (2003-01-01), Natarajan et al.
patent: 2003/0045805 (2003-03-01), Sheldon et al.
patent: 2003/0060724 (2003-03-01), Thiagarajan et al.
patent: 2003/0060854 (2003-03-01), Zhu
patent: 2003/0073914 (2003-04-01), Taha et al.
patent: 2003/0144700 (2003-07-01), Brown et al.
patent: 2003/0153956 (2003-08-01), Park et al.
patent: 2003/0208129 (2003-11-01), Beker et al.
patent: 2004/0077941 (2004-04-01), Reddy et al.
patent: 2004/0249420 (2004-12-01), Olson et al.
Bornzin Gene A.
Chitre Yougandh
Kil Jong
Min Xiaoyi
Snell Jeffery D.
Evanisko George R.
Kahelin Michael
Pacesetter Inc.
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