Ambulatory electrocardiography monitor optimized for capturing low amplitude cardiac action potential propagation
First Claim
1. An ambulatory electrocardiography monitor optimized for capturing low amplitude cardiac action potential propagation, comprising:
- a disposable extended wear electrode patch, comprising;
a flexible backing comprising two adhesive contact surfaces;
a pair of electrocardiographic electrodes, each comprised on one of the adhesive contact surfaces, each electrocardiographic electrode conductively exposed for dermal adhesion;
a receptacle affixed to a non-contacting surface of the flexible backing and comprising an electro-mechanical docking interface, the docking interface comprising a first set of electrical contact mating pads and a second set of electrical contact mating pads;
a battery within a compartment on a bottom surface of the receptacle and electrically interfaced to the first set of the electrical contact mating pads of the docking interface; and
a circuit comprising a pair of flexible circuit traces affixed at each end of the flexible backing with each circuit trace connecting one of the electrocardiographic electrodes to one of the electrical contact mating pads of the second set of the electrical contact mating pads of the docking interface; and
an ambulatory electrocardiography monitor recorder comprising;
a wearable housing adapted to securely fit into the receptacle;
an external connector comprising a set of electrical contacts protruding from a surface of the wearable housing that fits within the receptacle, the set of electrical contacts electrically and mechanically contacting the first set of the electrical contact mating pads of the docking interface and the second set of the electrical contact mating pads of the docking interface, wherein the electrical contacts are arranged in alignment with the first set of electrical contact mating pads and the second set of electrical contact mating pads when the wearable housing is securely fitted within the receptacle; and
electronic circuitry provided within the wearable housing and removably connected via the external connector to the electrocardiographic electrodes via the second set of the electrical contact mating pads of the docking interface and to the battery via the first set of the electrical contact mating pads of the docking interface, the electronic circuitry further comprising;
a low power micro-controller operable to execute over an extended period under modular micro program control as specified in firmware and to draw power from the battery via the external connector;
an electrocardiographic front end circuit under the control of the micro-controller adapted to sense cardiac electrical potential differentials through the electrocardiographic electrodes, which are provided to the micro-controller as electrocardiographic signals representative of amplitudes of the action potential propagation; and
a non-volatile memory electrically interfaced with the micro-controller and operable to continuously store samples of the electrocardiographic signals throughout the extended period.
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Accused Products
Abstract
Physiological monitoring can be provided through a lightweight wearable monitor that includes two components, a flexible extended wear electrode patch and a reusable monitor recorder that removably snaps into a receptacle on the electrode patch. The wearable monitor sits centrally on the patient'"'"'s chest along the sternum oriented top-to-bottom. The placement of the wearable monitor in a location at the sternal midline, with its unique narrow “hourglass”-like shape, significantly improves the ability of the wearable monitor to cutaneously sense cardiac electrical potential signals, particularly the P-wave and the QRS interval signals indicating ventricular activity in the ECG waveforms. In particular, the ECG electrodes on the electrode patch are tailored to be positioned axially along the midline of the sternum for capturing action potential propagation in an orientation that corresponds to the aVF lead used in a conventional 12-lead ECG that is used to sense positive or upright P-waves.
464 Citations
19 Claims
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1. An ambulatory electrocardiography monitor optimized for capturing low amplitude cardiac action potential propagation, comprising:
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a disposable extended wear electrode patch, comprising; a flexible backing comprising two adhesive contact surfaces; a pair of electrocardiographic electrodes, each comprised on one of the adhesive contact surfaces, each electrocardiographic electrode conductively exposed for dermal adhesion; a receptacle affixed to a non-contacting surface of the flexible backing and comprising an electro-mechanical docking interface, the docking interface comprising a first set of electrical contact mating pads and a second set of electrical contact mating pads; a battery within a compartment on a bottom surface of the receptacle and electrically interfaced to the first set of the electrical contact mating pads of the docking interface; and a circuit comprising a pair of flexible circuit traces affixed at each end of the flexible backing with each circuit trace connecting one of the electrocardiographic electrodes to one of the electrical contact mating pads of the second set of the electrical contact mating pads of the docking interface; and an ambulatory electrocardiography monitor recorder comprising; a wearable housing adapted to securely fit into the receptacle; an external connector comprising a set of electrical contacts protruding from a surface of the wearable housing that fits within the receptacle, the set of electrical contacts electrically and mechanically contacting the first set of the electrical contact mating pads of the docking interface and the second set of the electrical contact mating pads of the docking interface, wherein the electrical contacts are arranged in alignment with the first set of electrical contact mating pads and the second set of electrical contact mating pads when the wearable housing is securely fitted within the receptacle; and electronic circuitry provided within the wearable housing and removably connected via the external connector to the electrocardiographic electrodes via the second set of the electrical contact mating pads of the docking interface and to the battery via the first set of the electrical contact mating pads of the docking interface, the electronic circuitry further comprising; a low power micro-controller operable to execute over an extended period under modular micro program control as specified in firmware and to draw power from the battery via the external connector; an electrocardiographic front end circuit under the control of the micro-controller adapted to sense cardiac electrical potential differentials through the electrocardiographic electrodes, which are provided to the micro-controller as electrocardiographic signals representative of amplitudes of the action potential propagation; and a non-volatile memory electrically interfaced with the micro-controller and operable to continuously store samples of the electrocardiographic signals throughout the extended period. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for ambulatory electrocardiography monitoring and capturing low amplitude cardiac action potential propagation, comprising:
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an ambulatory electrocardiography monitor, comprising; a disposable extended wear electrode patch, comprising; a flexible backing comprising two adhesive contact surfaces; a pair of electrocardiographic electrodes, each comprised on one of the adhesive contact surfaces, each electrocardiographic electrode conductively exposed for dermal adhesion; a receptacle affixed to a non-contacting surface of the flexible backing and comprising an electro-mechanical docking interface, the docking interface comprising a first set of electrical contact mating pads and a second set of electrical contact mating pads; a battery within a compartment on a bottom surface of the receptacle and electrically interfaced to the first set of the electrical contact mating pads of the docking interface; and a circuit comprising a pair of flexible circuit traces affixed at each end of the flexible backing with each circuit trace connecting one of the electrocardiographic electrodes to one of the electrical contact mating pads of the second set of the electrical contact mating pads of the docking interface; an ambulatory electrocardiography monitor recorder comprising; a wearable housing adapted to securely fit into the receptacle; an external connector comprising a set of electrical contacts protruding from a surface of the wearable housing that fits within the receptacle, the set of electrical contacts electrically and mechanically contacting the first set of the electrical contact mating pads of the docking interface and the second set of the electrical contact mating pads of the docking interface; and electronic circuitry provided within the wearable housing and removably connected via the external connector to the electrocardiographic electrodes via the second set of the electrical contact mating pads of the docking interface and to the battery via the first set of the electrical contact mating pads of the docking interface, the electronic circuitry further comprising; a low power micro-controller operable to execute over an extended period under modular micro program control as specified in firmware and to draw power from the battery via the external connector; an electrocardiographic front end circuit under the control of the micro-controller adapted to sense cardiac electrical potential differentials through the electrocardiographic electrodes, which are provided to the micro-controller as electrocardiographic signals representative of amplitudes of the action potential propagation; and a non-volatile memory electrically interfaced with the micro-controller and operable to continuously store samples of the electrocardiographic signals throughout the extended period; and a download station configured to retrieve the stored samples of the electrocardiographic signals from the non-volatile memory. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification