Self-authenticating electrocardiography monitoring circuit
First Claim
1. An extended wear electrocardiography and physiological sensor monitor recorder with self-authenticating electrocardiography monitoring circuit, comprising:
- a sealed housing adapted to be removably secured into a non-conductive receptacle on an electrode patch; and
electronic circuitry comprised within the sealed housing, comprising;
an electrocardiographic front end circuit operable to sense electrocardiographic signals through electrocardiographic electrodes provided on the electrode patch;
flash memory to record the electrocardiographic signals; and
a micro-controller to periodically write data into a memory of the electrode patch on which the sealed housing is removably secured via the non-conductive receptacle during continuous recording of the electrocardiographic signals via the electrocardiographic front end circuit, to determine an expiration of the electrode patch based on an amount of the data stored in the memory of the electrode patch, and to turn off the micro-controller upon the expiration of the electrode patch.
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Accused Products
Abstract
Physiological monitoring can be provided through a wearable monitor that includes two components, a flexible extended wear electrode patch and a removable reusable monitor recorder. The wearable monitor sits centrally (in the midline) 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 (or immediately to either side of the sternum) benefits extended wear by removing the requirement that ECG electrodes be continually placed in the same spots on the skin throughout the monitoring period. Instead, the patient can place an electrode patch anywhere within the general region of the sternum. Ensuring that the quality level of ECG recording remains constant over an extended period of time is provided through self-authentication of electrode patches. The monitor recorder implements a challenge response scheme upon being connected to an electrode patch. Failing self-authentication, the monitor recorder signals an error condition.
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Citations
20 Claims
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1. An extended wear electrocardiography and physiological sensor monitor recorder with self-authenticating electrocardiography monitoring circuit, comprising:
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a sealed housing adapted to be removably secured into a non-conductive receptacle on an electrode patch; and electronic circuitry comprised within the sealed housing, comprising; an electrocardiographic front end circuit operable to sense electrocardiographic signals through electrocardiographic electrodes provided on the electrode patch; flash memory to record the electrocardiographic signals; and a micro-controller to periodically write data into a memory of the electrode patch on which the sealed housing is removably secured via the non-conductive receptacle during continuous recording of the electrocardiographic signals via the electrocardiographic front end circuit, to determine an expiration of the electrode patch based on an amount of the data stored in the memory of the electrode patch, and to turn off the micro-controller upon the expiration of the electrode patch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An extended wear electrocardiography and physiological sensor monitor with self-authenticating electrocardiography monitoring circuit, comprising:
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an electrode patch, comprising; an elongated strip of stretchable material; a pair of electrocardiographic electrodes, each electrocardiographic electrode conductively exposed on a contact surface of a respective end of the elongated strip; a non-conductive receptacle adhered to an outward-facing surface of the elongated strip and comprising a plurality of electrical pads; and a circuit affixed on each end of the elongated strip and comprising a pair of circuit traces electrically coupled to the pair of the electrocardiographic electrodes and a pair of the electrical pads; and an electrocardiography monitor having a sealed housing adapted to be removably secured into the non-conductive receptacle on the electrode patch and electronic circuitry comprised within the sealed housing, comprising; an electrocardiographic front end circuit operable to sense electrocardiographic signals through the electrocardiographic electrodes provided on the electrode patch; flash memory to record the electrocardiographic signals; and an externally-powered micro-controller to periodically write data into a memory of the electrode patch on which the electrocardiography monitor is removably secured via the non-conductive receptacle during continuous recording of the electrocardiographic signals via the front end circuit, to determine an expiration of the electrode patch based on an amount of the data stored in the memory of the electrode patch, and to turn off the micro-controller upon the expiration of the electrode patch. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification