Ambulatory extended-wear electrocardiography and syncope sensor monitor
First Claim
1. An electrocardiography and syncope monitoring system, comprising:
- an ambulatory, extended-wear electrocardiography and syncope sensor monitor recorder, comprising;
a sealed housing adapted to be removably secured into a non-conductive receptacle on a disposable extended wear electrode patch; and
an electronic circuitry comprised within the sealed housing, comprising;
an externally-powered, low-power microcontroller that is operable to execute under microprogrammable control as specified in a firmware;
an electrocardiographic front end circuit electrically interfaced to the microcontroller and operable to sense electrocardiographic signals through electrocardiographic electrodes provided on the disposable extended wear electrode patch, each of the electrocardiographic electrodes adapted to be positioned axially along a midline of a sternum for capturing action potential propagation, the electrocardiographic front end circuit further operable to process the sensed electrocardiographic signals prior to storing samples of the processed signals, the processing comprising;
amplifying, via a unity gain amplifier comprised in the electrocardiographic front end circuit, current of the electrocardiographic signals; and
after the amplification of the current, amplifying voltage of the electrocardiographic signals while conditioning the electrocardiographic signals;
a reference generator comprising a pair of resistors configured to receive power supply noise and system noise and to inject a driven reference containing the power supply noise and the system noise into a patient;
a syncope sensor electrically interfaced with the microcontroller and operable to sense syncope events; and
an externally-powered flash memory electrically interfaced with the microcontroller and operable to store the samples of the processed electrocardiographic signals the syncope events.
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Accused Products
Abstract
Physiological monitoring can be provided through a syncope sensor imbedded into an electrocardiography monitor, which correlates syncope events and electrocardiographic data. 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 at the sternal midline and includes a unique narrow “hourglass”-like shape, significantly improving the ability of the monitor to cutaneously sense cardiac electrical potential signals, particularly the P-wave and QRS interval signals, which indicate ventricular activity in electrocardiographic waveforms. The electrocardiographic electrodes on the electrode patch are tailored for axial positioning along the midline of the sternum to capture action potential propagation in an orientation that corresponds to the aVF lead in a conventional 12-lead electrocardiogram, which senses positive P-waves.
387 Citations
20 Claims
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1. An electrocardiography and syncope monitoring system, comprising:
an ambulatory, extended-wear electrocardiography and syncope sensor monitor recorder, comprising; a sealed housing adapted to be removably secured into a non-conductive receptacle on a disposable extended wear electrode patch; and an electronic circuitry comprised within the sealed housing, comprising; an externally-powered, low-power microcontroller that is operable to execute under microprogrammable control as specified in a firmware; an electrocardiographic front end circuit electrically interfaced to the microcontroller and operable to sense electrocardiographic signals through electrocardiographic electrodes provided on the disposable extended wear electrode patch, each of the electrocardiographic electrodes adapted to be positioned axially along a midline of a sternum for capturing action potential propagation, the electrocardiographic front end circuit further operable to process the sensed electrocardiographic signals prior to storing samples of the processed signals, the processing comprising; amplifying, via a unity gain amplifier comprised in the electrocardiographic front end circuit, current of the electrocardiographic signals; and after the amplification of the current, amplifying voltage of the electrocardiographic signals while conditioning the electrocardiographic signals; a reference generator comprising a pair of resistors configured to receive power supply noise and system noise and to inject a driven reference containing the power supply noise and the system noise into a patient; a syncope sensor electrically interfaced with the microcontroller and operable to sense syncope events; and an externally-powered flash memory electrically interfaced with the microcontroller and operable to store the samples of the processed electrocardiographic signals the syncope events. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electrocardiography and syncope monitoring system optimized for capturing low amplitude cardiac action potential propagation, comprising:
an ambulatory, extended-wear electrocardiography and syncope sensor monitor optimized for capturing low amplitude cardiac action potential propagation, comprising; a disposable extended wear electrode patch comprising; a flexible backing formed of an elongated strip of stretchable material with a narrow longitudinal midsection and, on each end, a contact surface at least partially coated with an adhesive dressing provided as a crimp relief, the elongated strip being narrower at the longitudinal midsection than at the ends; a pair of electrocardiographic electrodes conductively exposed on the contact surface of each end of the elongated strip; a non-conductive receptacle adhered to an outward-facing end of the elongated strip and comprising a plurality of electrical pads; and a flexible circuit affixed on each end of the elongated strip as a strain relief and comprising a pair of circuit traces electrically coupled to the pair of electrocardiographic electrodes and a pair of the electrical pads; and a battery electrically interfaced to a different pair of the pads; and a sealed housing adapted to be removably secured into a non-conductive receptacle on a disposable extended wear electrode patch; and an electronic circuitry comprised within the sealed housing, comprising; a low-power microcontroller that is operable to draw power from the battery via the different pair of the electrical pads and that is operable to execute under microprogrammable control as specified in a firmware; an electrocardiographic front end circuit electrically interfaced to the microcontroller and operable to sense electrocardiographic signals through electrocardiographic electrodes provided on the disposable extended wear electrode patch, each of the electrocardiographic electrodes adapted to be positioned axially along a midline of a sternum for capturing action potential propagation; and a syncope sensor electrically interfaced with the microcontroller and operable to sense syncope events, the syncope sensor comprising an actigraphy-based syncope sensor sensing actigraphy data, applying actigraphy filtering criteria to the sensed actigraphy data, identifying a portion of the actigraphy data indicative of the syncope events based on the actigraphy filtering criteria application and detecting the syncope events based on the portion of the data, providing the detected syncope event to the microcontroller, wherein the microcontroller stores the syncope events into the memory; and a flash memory electrically interfaced with the microcontroller and operable to store samples of the electrocardiographic signals and the syncope events, the memory further operable to draw power from the battery via the different pair of the electrical pads. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
Specification