Cardiac event categorization system
First Claim
1. A system for detecting a cardiac event in a human patient, the system including:
- at least two electrodes adapted for implantation in a patient for obtaining an electrical signal from the patient'"'"'s heart;
an implantable device including a radio transceiver, a memory and a processor configured to;
process the electrical signal to obtain R-R interval values and values of a heart signal parameter defining an ST deviation therefrom;
categorize detected cardiac events into a low severity level and a high severity level based upon a combined function of said R-R interval values and said ST deviation values for comparison with a predetermined threshold for a selected R-R interval value;
operative upon categorizing a cardiac event as a high severity level event, cause the transceiver to transmit a high severity event signal that includes both electrical signal waveform data associated with the high severity level event and an indication of the high severity level of the cardiac event;
operative upon categorizing a cardiac event as a low severity level event, perform at least one of the following actions;
(i) cause the transceiver to transmit a low severity event signal that includes both electrical signal waveform data associated with the low severity level event and an indication of the low severity level of the cardiac event;
(ii) store electrical signal waveform data associated with the low severity level event.
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Accused Products
Abstract
Disclosed are methods for detecting an acute myocardial infarction (i.e., a heart attack) at the earliest possible time and promptly warning the patient that he should immediately seek medical care. The present invention includes an implantable electronic system that can sense a change in the patient'"'"'s electrogram that is indicative of a heart attack. If a heart attack is sensed, the device would then cause an implantable and/or externally located alarm to be actuated to warn the patient of his condition and a medical practitioner at a remote diagnostic center would receive the patient'"'"'s electrogram for analysis. The patient or a caretaker would then be informed to self-inject medication through a subcutaneous, pass-through drug port that can be a separate device or integrated into the implanted device that is designed for the early detection of a heart attack. The methods of the present invention include determining if a human patient is likely to have a heart attack and, if he is, then implanting within that patient a device that can sense when a heart attack occurs and alarm the patient to take appropriate actions if a heart attack does occur.
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Citations
7 Claims
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1. A system for detecting a cardiac event in a human patient, the system including:
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at least two electrodes adapted for implantation in a patient for obtaining an electrical signal from the patient'"'"'s heart; an implantable device including a radio transceiver, a memory and a processor configured to; process the electrical signal to obtain R-R interval values and values of a heart signal parameter defining an ST deviation therefrom; categorize detected cardiac events into a low severity level and a high severity level based upon a combined function of said R-R interval values and said ST deviation values for comparison with a predetermined threshold for a selected R-R interval value; operative upon categorizing a cardiac event as a high severity level event, cause the transceiver to transmit a high severity event signal that includes both electrical signal waveform data associated with the high severity level event and an indication of the high severity level of the cardiac event; operative upon categorizing a cardiac event as a low severity level event, perform at least one of the following actions; (i) cause the transceiver to transmit a low severity event signal that includes both electrical signal waveform data associated with the low severity level event and an indication of the low severity level of the cardiac event; (ii) store electrical signal waveform data associated with the low severity level event. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification