Wearable cardioverter defibrillator (WCD) system with isolated patient parameter component
First Claim
1. A wearable cardioverter defibrillator (WCD) system, comprising:
- a support structure configured to be worn by a patient;
a patient parameter sense port;
Electrocardiogram (ECG) electrodes configured to be coupled to the patient parameter sense port and to sense an ECG signal of the patient;
a first circuit ground;
a second circuit ground electrically isolated from the first circuit ground;
a power source connected to the first circuit ground;
an energy storage module electrically connected to the first circuit ground and configured to be charged from the power source so as to store an electrical charge;
a discharge circuit electrically coupled to the energy storage module;
a measurement circuit configured to render ECG data from the ECG signal received at the patient parameter sense port as sensed by the ECG electrodes, the measurement circuit including an isolating circuit directly coupled to both the first circuit ground and to the second circuit ground, the isolating circuit configured to electrically isolate the patient parameter sense port from the first circuit ground; and
a processor electrically connected to the first circuit ground, operatively coupled to the measurement circuit, and configured to;
determine from the ECG data whether or not a shock criterion is met, andcontrol the discharge circuit to discharge the stored electrical charge through the patient while the support structure is worn by the patient responsive to the shock criterion being met.
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Accused Products
Abstract
Embodiments are directed to wearable cardioverter defibrillator (WCD) systems that include patient parameter electrodes, such as ECG electrodes, that are at least substantially electrically isolated from other circuits of the WCD system. In embodiments, the WCD system includes a power source, an energy storage module, and a processor each connected to a first circuit ground. A patient parameter sense port, such as an ECG port, is coupled to the patient. A measurement circuit may render a physiological input from the sensed patient parameter received at the patient parameter sense port, and the measurement circuit includes an isolating circuit that electrically isolates the patient parameter sense port from the first circuit ground. The sensing of physiological inputs of the patient can be improved, resulting in fewer erroneous readings and false alarms.
86 Citations
11 Claims
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1. A wearable cardioverter defibrillator (WCD) system, comprising:
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a support structure configured to be worn by a patient; a patient parameter sense port; Electrocardiogram (ECG) electrodes configured to be coupled to the patient parameter sense port and to sense an ECG signal of the patient; a first circuit ground; a second circuit ground electrically isolated from the first circuit ground; a power source connected to the first circuit ground; an energy storage module electrically connected to the first circuit ground and configured to be charged from the power source so as to store an electrical charge; a discharge circuit electrically coupled to the energy storage module; a measurement circuit configured to render ECG data from the ECG signal received at the patient parameter sense port as sensed by the ECG electrodes, the measurement circuit including an isolating circuit directly coupled to both the first circuit ground and to the second circuit ground, the isolating circuit configured to electrically isolate the patient parameter sense port from the first circuit ground; and a processor electrically connected to the first circuit ground, operatively coupled to the measurement circuit, and configured to; determine from the ECG data whether or not a shock criterion is met, and control the discharge circuit to discharge the stored electrical charge through the patient while the support structure is worn by the patient responsive to the shock criterion being met. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification