Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2005-07-29
2010-10-26
Layno, Carl H (Department: 3766)
Surgery
Diagnostic testing
Cardiovascular
C600S527000, C600S534000
Reexamination Certificate
active
07822471
ABSTRACT:
Medical apparatus for detecting the presence of artifact signals generated in the electrocardiogram of a patient by CPR and/or other patient motion. The presence of artifact signals is determined by analyzing variations in a measured electrical signal that represents the patient's transthoracic impedance. Such detection is important because the presence of CPR and/or motion artifacts can disrupt a patient's electrocardiogram (ECG) signal. The patient's impedance signal data is stored in the apparatus and analyzed to determine if the characteristics are indicative of the presence of CPR and/or motion artifacts. This analysis is performed independently of ECG data and may be used as an indicator of the underlying ECG rhythm classification. In essence, if the impedance exceeds some threshold amount, so as to indicate the presence of CPR or patient motion which can render the ECG data unreliable, the normal interpretation of the ECG data is interrupted. Applications of the invention include, but are not limited to, advising or not advising, defibrillation therapy, CPR or intravenous medicinal therapy.
REFERENCES:
patent: 5247939 (1993-09-01), Sjoquist et al.
patent: 5704365 (1998-01-01), Albrecht et al.
patent: 5957856 (1999-09-01), Weil et al.
patent: 6125299 (2000-09-01), Groenke et al.
patent: 6287328 (2001-09-01), Snyder et al.
patent: 6304773 (2001-10-01), Taylor et al.
patent: 6351671 (2002-02-01), Myklebust et al.
patent: 6847737 (2005-01-01), Kouri et al.
patent: 6961612 (2005-11-01), Elghazzawi et al.
patent: 2003/0060723 (2003-03-01), Joo et al.
Fitzgibbon et al., Determination of the Noise Source in the Electrocardiogram During Cardiopulmonary Resuscitation, Critical Care Medicine, 2002, vol. 30, No. 4.
Husoy et al., Removal of Cardiopulmonary Resuscitation Artifacts From Human ECG Using an Efficient Matching Pursuit-Like Algorithm, IEEE Transactions on Biomedical Engineering, Nov. 2002, vol. 49, No. 11.
Van Alem et al., Interruption Of Cardiopulmonary Resuscitation With the Use of the Automated External Defibrillator in Out-Of-Hospital Cardiac Arrest, Annals of Emergency Medicine, Jul. 2003.
Yu et al., Adverse Outcomes of Interrupted Precordial Compression During Automated Defibrillation, American Heart Association Circulation, Jul. 16, 2002.
Access CardioSystems, Inc.
Layno Carl H
Pandiscio & Pandiscio
Patel Natasha N
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