An arrhythmia monitoring device includes a plurality of pairs of ECG sensing electrodes disposed in a garment configured to be worn about a torso of a patient, and signal acquisition circuit configured to be electrically coupled to the plurality pairs of ECG sensing electrodes. The device includes a processor in communication with the signal acquisition circuit configured to execute a selection process comprising identifying a quality of each of a plurality of ECG signals, ranking the signals based on the identified quality, and selecting at least two ECG signals to monitor having highest quality. The processor is configured to re-execute the selection process following an event including at least one of the garment shifting on the torso, the garment being repositioned on the torso, and the garment being removed and returned to the torso of the patient, and monitor the selected at least two ECG signals for a cardiac arrhythmia.

A wearable sensor and method for providing a wearable sensor are disclosed. In a first aspect, the wearable sensor comprises a first module, wherein the first module comprises a top layer, a printed circuit board (PCB) layer, and a bottom layer. The bottom layer comprises a double adhesive layer that adheres to both the PCB layer and the user. The bottom layer includes at least two openings to house at least two electrodes for monitoring of a user. The wearable sensor further comprises a second module coupled to the first module, wherein the first module is disposable and the second module is reusable. In a second aspect, the method comprises providing the aforementioned wearable sensor.

An electrocardiography patch is provided. A pair of electrodes are exposed on a contact surface of a flexible backing. A circuit includes a pair of circuit traces and each circuit trace is electrically coupled to one of the electrodes in the pair. A plurality of electrical pads are positioned between the electrodes and above at least a portion of the circuit traces. A pair of the electrical pads interface with the electrodes. A pair of battery leads electrically interface a battery to another pair of the electrical pads.

An electrocardiography patch is provided. A pair of electrodes are exposed on a contact surface of a flexible backing. A circuit includes a pair of circuit traces and each circuit trace is electrically coupled to one of the electrodes in the pair. A plurality of electrical pads are positioned between the electrodes and above at least a portion of the circuit traces. A pair of the electrical pads interface with the electrodes. A pair of battery leads electrically interface a battery to another pair of the electrical pads.

An extended wear electrocardiography patch is provided. An integrated flexible circuit includes a single piece of material and has an upper end and a lower end opposite the upper end. A mirror image of the upper end extends from at least a portion of one side of the upper end and folds over the upper end. One circuit trace is positioned on the upper end and one circuit trace is positioned on the lower end. Electrical pads are located on a contact surface of the upper end and on an outward facing surface of the mirror image of the upper end. An electrocardiographic electrode is positioned on the contact surface of the upper end and another electrocardiographic electrode is positioned on a contact surface of the lower end. A battery is directly adhered to the outward facing surface of the mirror image of the upper end.

An extended wear electrocardiography patch is provided. An integrated flexible circuit includes a single piece of material and has an upper end and a lower end opposite the upper end. A mirror image of the upper end extends from at least a portion of one side of the upper end and folds over the upper end. One circuit trace is positioned on the upper end and one circuit trace is positioned on the lower end. Electrical pads are located on a contact surface of the upper end and on an outward facing surface of the mirror image of the upper end. An electrocardiographic electrode is positioned on the contact surface of the upper end and another electrocardiographic electrode is positioned on a contact surface of the lower end. A battery is directly adhered to the outward facing surface of the mirror image of the upper end.

An ambulatory electrocardiography monitor is provided. The monitor includes a housing adapted to couple to a monitoring patch that includes electrocardiographic electrodes; and electronic circuitry provided within the housing. The electronic circuitry includes an electrocardiographic front end circuit; the microcontroller configured to: execute a power up sequence upon the housing coupling to the patch; after the execution of the power-up sequence, retrieve from the monitoring patch an identifier associated with the patch and a password for accessing results of a physiological monitoring conducted using the patch; read samples of the electrocardiographic signals, buffer the samples of the electrocardiographic signals, compress the buffered samples of the electrocardiographic signals, buffer the compressed samples of the electrocardiographic signals, and write-the buffered samples into a memory in association with the password and the identifier; and the memory electrically interfaced with the microcontroller.

An ambulatory electrocardiography monitor is provided. The monitor includes a housing adapted to couple to a monitoring patch that includes electrocardiographic electrodes; and electronic circuitry provided within the housing. The electronic circuitry includes an electrocardiographic front end circuit; the microcontroller configured to: execute a power up sequence upon the housing coupling to the patch; after the execution of the power-up sequence, retrieve from the monitoring patch an identifier associated with the patch and a password for accessing results of a physiological monitoring conducted using the patch; read samples of the electrocardiographic signals, buffer the samples of the electrocardiographic signals, compress the buffered samples of the electrocardiographic signals, buffer the compressed samples of the electrocardiographic signals, and write-the buffered samples into a memory in association with the password and the identifier; and the memory electrically interfaced with the microcontroller.

An electrocardiograph (ECG) patch including: a first electrode; a second electrode; a high pass filter configured to receive a bias voltage and provide the bias voltage to the first electrode and the second electrode; and a signal processing unit configured to generate the bias voltage and provide the bias voltage to the high pass filter.

An electrocardiograph (ECG) patch including: a first electrode; a second electrode; a high pass filter configured to receive a bias voltage and provide the bias voltage to the first electrode and the second electrode; and a signal processing unit configured to generate the bias voltage and provide the bias voltage to the high pass filter.