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System Description
ACT Description
The ACT continuous ECG cellular phone and arrhythmia detector
is designed for self-testing by patients at home and for analysis by
medical professionals at a remote monitoring center.
The ECG chest-worn sensor is used for the acquisition and
transmission of the ECG signal. The sensor is equipped with
electrodes on a harness and works in conjunction with a handheld
cellular device.
The sensor houses a 3.6V AA lithium-thionyl chloride battery, an
ECG channel circuit, an impedance measurement circuit, a
pacemaker detection circuit, a flash buffer memory, a Bluetooth
transceiver and a buzzer. The ECG signals are received, filtered
and amplified in the input circuit, stored in the flash memory buffer
and transmitted via Bluetooth to a cellular phone (cellular phone).
The cellular phone runs a proprietary application that is configured
to process and transmit the ECG recordings via cellular network
while storing them and the detected physiological events on a
micro-SD memory card, or in internal memory, depending on the
cellular model (not applicable to CEM). When an arrhythmia is
detected, the cellular phone transmits the recorded ECG
automatically via cellular link, to a monitoring center for professional
analysis. If the patient is out of the cellular network coverage area,
the cellular phone will send all events that were stored when the
cellular link is re-established.
The sensor loops through and up to six (6) hours cyclic buffer of
ECG data in the internal flash memory in order to preserve the ECG
in cases when the Bluetooth connection to the cellular phone is not
connected.