Portable electrocardiograph, electrocardiogram monitoring system, and electrocardiogram monitoring method using the same
Electrocardiogram data and acceleration data obtained by a portable electrocardiograph of each patient are transmitted to a radio base station, and transmitted from the radio base station to a hospital computer via a public network, a line L, and a TA. Electrocardiograms and accelerations of a plurality of patients are displayed on the screen of the hospital computer based on the electrocardiogram data and acceleration data in real time. In the portable electrocardiograph, a communication device and an interface unit for communication are separated from other components by a ground plane, and an electrocardiogram measurement device is separated from the other components by a ground plane. Two of the ground planes are provided between the communication device and the interface unit for communication and the electrocardiogram measurement device.
1. A portable electrocardiograph comprising:
first and second stacked-layered circuit boards;
an electrocardiogram measurement device that measures an electrocardiogram to obtain electrocardiogram data; and
a radio communication device that radio-transmits the electrocardiogram data obtained by said electrocardiogram measurement device in real time; and
a logic circuit that analog-digital converts said electrocardiogram data, wherein
said first and second stacked-layered circuit boards each include a plurality of circuit boards and a ground conductor layer provided between any ones of said plurality of circuit boards,
said logic circuit is arranged between one side of said first stacked-layered circuit board and one side of said second stacked-layered circuit board,
said electrocardiogram measurement device is arranged on the other side of said first stacked-layered circuit board, and said radio communication device is arranged on the other side of said second stacked-layered circuit board,
said ground conductor layer is disposed so that said electrocardiogram measurement device and said radio communication device are isolated from each other, and
said radio communication device includes a transmission circuit.
2. The portable electrocardiograph according to claim 1 , further comprising a casing that houses said electrocardiogram measurement device, said radio communication device, and said stacked-layered circuit board.
3. The portable electrocardiograph according to claim 1 , further comprising an externally readable first storage device that stores the electrocardiogram data obtained by said electrocardiogram measurement device.
4. The portable electrocardiograph according to claim 1 , further comprising an accelerometer that measures acceleration to obtain acceleration data, wherein
said radio communication device radio-transmits the acceleration data obtained by said accelerometer in real time.
5. The portable electrocardiograph according to claim 4 , further comprising an externally readable second storage device that stores the acceleration data obtained by said accelerometer.
6. The portable electrocardiograph according to claim 1 , wherein said radio communication device receives a given alarm signal that is transmitted by an external computer,
the portable electrocardiograph further comprising an alarm sound output device that outputs an alarm sound in response to the alarm signal received by said radio communication device.
7. The portable electrocardiograph according to claim 1 , wherein said radio communication device receives a given alarm signal that is transmitted by an external computer,
the portable electrocardiograph further comprising an alarm display device that displays an alarm in response to the alarm signal received by said radio communication device.
8. The portable electrocardiograph according to claim 1 , wherein said radio communication device is a personal handheld device.
9. The portable electrocardiograph according to claim 8 , wherein said personal handheld device is a cellular phone.