System and method for detecting cardiac ischemia based on...

Surgery – Diagnostic testing – Cardiovascular

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C600S517000

Reexamination Certificate

active

10606299

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: 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: 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: 6823213 (2004-11-01), Norris et al.
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.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

System and method for detecting cardiac ischemia based on... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for detecting cardiac ischemia based on..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for detecting cardiac ischemia based on... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3773440

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.