Heart monitoring systems, apparatus and methods adapted to detect myocardial ischemia
First Claim
1. A heart monitoring apparatus adapted to detect myocardial ischemia, the apparatus comprising:
- at least one first-tier sensor/analyzer adapted to sense a first input related to cardiac function, and to produce a first-tier trigger signal when the first input indicates myocardial ischemia; and
at least one second-tier sensor/analyzer adapted to sense a second input related to cardiac function, and to produce a second-tier trigger signal when the second input indicates myocardial ischemia;
a control element adapted to adjust at least one threshold for at least one second-tier sensor/analyzer when the first-tier trigger signal is produced; and
a triggering element adapted to produce a response-invoking signal in response to the first-tier trigger signal and the second-tier trigger signal.
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Accused Products
Abstract
Embodiments include heart monitoring systems, apparatus, and methods adapted to detect myocardial ischemia. An apparatus includes at least one first-tier sensor/analyzer adapted to sense a first input related to cardiac function, and to produce a first-tier trigger signal when the first input indicates myocardial ischemia. In an embodiment, a first-tier sensor/analyzer includes an ECG sensor/analyzer. In another embodiment, a first-tier sensor/analyzer includes a patient activator. An apparatus further includes at least one second-tier sensor/analyzer adapted to sense a second input related to cardiac function, and to produce a second-tier trigger signal when the second input indicates myocardial ischemia. In an embodiment, a second-tier sensor-analyzer includes a heart sound sensor/analyzer. A triggering element is adapted to produce a response-invoking signal in response to the first-tier trigger signal and the second-tier trigger signal. The response-invoking signal may invoke a patient alert, a message to an external system, and/or a cardiac stimulus.
12 Citations
23 Claims
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1. A heart monitoring apparatus adapted to detect myocardial ischemia, the apparatus comprising:
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at least one first-tier sensor/analyzer adapted to sense a first input related to cardiac function, and to produce a first-tier trigger signal when the first input indicates myocardial ischemia; and at least one second-tier sensor/analyzer adapted to sense a second input related to cardiac function, and to produce a second-tier trigger signal when the second input indicates myocardial ischemia; a control element adapted to adjust at least one threshold for at least one second-tier sensor/analyzer when the first-tier trigger signal is produced; and a triggering element adapted to produce a response-invoking signal in response to the first-tier trigger signal and the second-tier trigger signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A heart monitoring apparatus adapted to detect myocardial ischemia, the apparatus comprising:
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an electrocardiogram (ECG) sensor/analyzer adapted to sense bioelectrical activity, to produce a current ECG waveform, and to produce an ECG trigger signal when at least a portion of the current ECG waveform indicates myocardial ischemia; a heart sound sensor/analyzer adapted to sense heart sounds, to produce a current heart sound waveform, and to produce a heart sound trigger signal when at least a portion of the current heart sound waveform indicates myocardial ischemia; an initiation control element adapted to activate the heart sound sensor/analyzer in response to the ECG trigger signal; and a triggering element adapted to produce a response-invoking signal in response to the ECG trigger signal and the heart sound trigger signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification