Means and method for the detection of cardiac events

US20070249944A1Inactive Publication Date: 2007-10-25ANGEL MEDICAL SYST
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Patent Information

Authority / Receiving Office
US Β· United States
Current Assignee / Owner
ANGEL MEDICAL SYST
Publication Date
2007-10-25
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

Disclosed is a system for the detection of cardiac events that includes an implanted device called a cardiosaver, a physician's programmer and an external alarm system. The system is designed to provide early detection of cardiac events such as acute myocardial infarction or exercise induced myocardial ischemia caused by an increased heart rate or exertion. The system can also alert the patient with a less urgent alarm if a heart arrhythmia is detected. Using different algorithms, the cardiosaver can detect a change in the patient's electrogram that is indicative of a cardiac event within five minutes after it occurs and then automatically warn the patient that the event is occurring. To provide this warning, the system includes an internal alarm sub-system (internal alarm means) within the cardiosaver and / or an external alarm system (external alarm means) which are activated after the ST segment of the electrogram exceeds a preset threshold.
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Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application is a Divisional of U.S. patent application Ser. No. 10 / 853,058, filed on 26 May 2004.FIELD OF USE

[0002] This invention is in the field of systems, including devices implanted within a human patient, for the purpose of automatically detecting the onset of a cardiac event. BACKGROUND OF THE INVENTION

[0003] Heart disease is the leading cause of death in the United States. A heart attack (also known as an Acute Myocardial Infarction (AMI)) typically results from a thrombus that obstructs blood flow in one or more coronary arteries. AMI is a common and life-threatening complication of coronary heart disease. The sooner that perfusion of the myocardium is restored (e.g., with injection of a thrombolytic medication such as tissue plasminogen activator (tPA)), the better the prognosis and survival of the patient from the heart attack. The extent of damage to the myocardium is strongly dependent upon the length of time prior t...

Claims

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