Wearable cardioverter defibrillator (WCD) system informing patient that it is validating just-detected cardiac arrhythmia
First Claim
Patent Images
1. A wearable cardioverter defibrillator (“
- WCD”
) system, comprising;
a support structure configured to be worn by a patient;
a power source;
an energy storage module configured to receive an electrical charge from the power source, and to store the received electrical charge;
a discharge circuit coupled to the energy storage module, the discharge circuit controllable to discharge the stored electrical charge so as to cause a shock to be delivered to the patient while the support structure is worn by the patient;
a measurement circuit configured to render a physiological input from a patient physiological signal;
a user interface configured to output one or more human-perceptible indications; and
a processor configured to;
detect a cardiac arrhythmia of the patient from the physiological input;
determine whether or not the detected cardiac arrhythmia is validated according to whether or not the detected cardiac arrhythmia meets a validation criterion, the validation criterion including that the detected cardiac arrhythmia is maintained for a threshold validation time;
cause an opening human-perceptible indication to be output responsive to detecting the cardiac arrhythmia, prior to completing the determination of whether or not the detected cardiac arrhythmia has been thus validated according to the validation criterion; and
if the detected cardiac arrhythmia does not become thus validated according to the validation criterion, then control the discharge circuit to not deliver a shock for at least 25 min from when the opening human-perceptible indication was caused to be output;
elseif the detected cardiac arrhythmia does become thus validated according to the validation criterion, then cause a warning human-perceptible indication to be output, the warning human-perceptible indication configured to communicate that a shock will be delivered imminently, the warning human-perceptible indication distinct from the opening human-perceptible indication, and then control the discharge circuit to instead deliver a shock within 3 min from when the warning human-perceptible indication was caused to be output.
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Abstract
In some embodiments, a wearable cardioverter defibrillator (“WCD”) system may output an opening human-perceptible indication, after detecting a shockable cardiac arrhythmia but before validating it. This may succeed in informing the patient that the WCD system is working, and in particular analyzing a just-detected cardiac arrhythmia. The information may give comfort and confidence to the patient who may be conscious, and be experiencing only ventricular tachycardia but not ventricular fibrillation.
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Citations
15 Claims
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1. A wearable cardioverter defibrillator (“
- WCD”
) system, comprising;a support structure configured to be worn by a patient; a power source; an energy storage module configured to receive an electrical charge from the power source, and to store the received electrical charge; a discharge circuit coupled to the energy storage module, the discharge circuit controllable to discharge the stored electrical charge so as to cause a shock to be delivered to the patient while the support structure is worn by the patient; a measurement circuit configured to render a physiological input from a patient physiological signal; a user interface configured to output one or more human-perceptible indications; and a processor configured to; detect a cardiac arrhythmia of the patient from the physiological input; determine whether or not the detected cardiac arrhythmia is validated according to whether or not the detected cardiac arrhythmia meets a validation criterion, the validation criterion including that the detected cardiac arrhythmia is maintained for a threshold validation time; cause an opening human-perceptible indication to be output responsive to detecting the cardiac arrhythmia, prior to completing the determination of whether or not the detected cardiac arrhythmia has been thus validated according to the validation criterion; and if the detected cardiac arrhythmia does not become thus validated according to the validation criterion, then control the discharge circuit to not deliver a shock for at least 25 min from when the opening human-perceptible indication was caused to be output;
elseif the detected cardiac arrhythmia does become thus validated according to the validation criterion, then cause a warning human-perceptible indication to be output, the warning human-perceptible indication configured to communicate that a shock will be delivered imminently, the warning human-perceptible indication distinct from the opening human-perceptible indication, and then control the discharge circuit to instead deliver a shock within 3 min from when the warning human-perceptible indication was caused to be output. - View Dependent Claims (2, 3, 4, 5)
- WCD”
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6. A non-transitory computer-readable storage medium storing one or more programs which, when executed by at least one processor of a wearable cardioverter defibrillator (“
- WCD”
) system, the WCD comprising a support structure configured to be worn by a patient, a power source, an energy storage module configured to receive an electrical charge from the power source, and to store the received electrical charge, a discharge circuit coupled to the energy storage module, the discharge circuit controllable to discharge the stored electrical charge so as to cause a shock to be delivered to the patient, a measurement circuit configured to render a physiological input from a patient physiological signal, a user interface and a processor, these one or more programs result in operations comprising;detecting a cardiac arrhythmia of the patient from the physiological input; determining whether or not the detected cardiac arrhythmia is validated according to whether or not the detected cardiac arrhythmia meets a validation criterion, the validation criterion including that the detected cardiac arrhythmia is maintained for a threshold validation time; causing an opening human-perceptible indication to be output responsive to detecting the cardiac arrhythmia, prior to completing the determination of whether or not the detected cardiac arrhythmia has been thus validated according to the validation criterion; and if the detected cardiac arrhythmia does not become thus validated according to the validation criterion, then controlling the discharge circuit to not deliver a shock for at least 25 min from when the opening human-perceptible indication was caused to be output;
elseif the detected cardiac arrhythmia does become thus validated according to the validation criterion, then causing a warning human-perceptible indication to be output, the warning human-perceptible indication configured to communicate that a shock will be delivered imminently, the warning human-perceptible indication distinct from the opening human-perceptible indication, and then controlling the discharge circuit to instead deliver a shock within 3 min from when the warning human-perceptible indication was caused to be output. - View Dependent Claims (7, 8, 9, 10)
- WCD”
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11. A method for a wearable cardioverter defibrillator (“
- WCD”
) system, the WCD comprising a support structure configured to be worn by a patient, a power source, an energy storage module configured to receive an electrical charge from the power source, and to store the received electrical charge, a discharge circuit coupled to the energy storage module, the discharge circuit controllable to discharge the stored electrical charge so as to cause a shock to be delivered to the patient, a measurement circuit configured to render a physiological input from a patient physiological signal, a user interface and a processor, the method comprising;detecting a cardiac arrhythmia of the patient from the physiological input; determining whether or not the detected cardiac arrhythmia is validated according to whether or not the detected cardiac arrhythmia meets a validation criterion, the validation criterion including that the detected cardiac arrhythmia is maintained for a threshold validation time; causing an opening human-perceptible indication to be output responsive to detecting the cardiac arrhythmia, prior to completing the determination of whether or not the detected cardiac arrhythmia has been thus validated according to the validation criterion; and if the detected cardiac arrhythmia does not become thus validated according to the validation criterion, then controlling the discharge circuit to not deliver a shock for at least 25 min from when the opening human-perceptible indication was caused to be output;
elseif the detected cardiac arrhythmia does become thus validated according to the validation criterion, then causing a warning human-perceptible indication to be output, the warning human-perceptible indication configured to communicate that a shock will be delivered imminently, the warning human-perceptible indication distinct from the opening human-perceptible indication, and then controlling the discharge circuit to instead deliver a shock within 3 min from when the warning human-perceptible indication was caused to be output. - View Dependent Claims (12, 13, 14, 15)
- WCD”
Specification