Device for acquiring physiological variables measured in a body
An eavesdropping arrangement for acquiring a measured physiological variable of an individual includes a receiver and a communication interface in a housing separate from the receiver. The communication interface is positioned along a communication link between a first sensor, which is configured to measure aortic blood pressure and to provide a signal representing measured aortic blood pressure, and a central monitoring device configured to monitor the measured aortic blood pressure. The communication interface includes a connection to the communication link that permits the communication interface to eavesdrop on the signal representing measured aortic blood pressure such that information representing measured aortic blood pressure is sent to the receiver while allowing the central monitoring device to receive and use the signal representing measured aortic blood pressure.
1. A blood pressure measurement and communication system comprising:
a first circuitry configured to:
receive a signal representing a measured aortic blood pressure value from an aortic pressure sensor via a wired connection between the aortic pressure sensor and the first circuitry,
provide a signal representing the measured aortic blood pressure value to a monitoring device via a wired connection between the first circuitry and the monitoring device without changing the measured aortic blood pressure value, and
provide a wireless signal representing the measured aortic blood pressure value to a receiver;
a second circuitry configured to:
receive a first signal in a first signal format representing a measured distal blood pressure value from a distal pressure sensor via a connection between the second circuitry and the distal pressure sensor,
convert the first signal in the first signal format to a second signal in a second signal format, and
provide a wireless signal, which is based on the second signal and represents the measured distal blood pressure value, to the receiver; and
the receiver, which is configured to wirelessly receive (i) the wireless signal representing the measured aortic blood pressure value measured by the aortic pressure sensor, and (ii) the wireless signal representing the measured distal blood pressure value measured by the distal pressure sensor, the receiver comprising:
a processor configured to calculate a Fractional Flow Reserve (FFR) value based on at least the wirelessly received signal representing the measured aortic blood pressure value measured by the aortic pressure sensor and the wirelessly received signal representing the measured distal blood pressure value measured by the distal pressure sensor, and
a display configured to display data based on the FFR value.
2. The system of claim 1 ,
wherein the wired connection between the aortic pressure sensor and the first circuitry comprises a standard communication cable for connecting the aortic pressure sensor to the monitoring device, and
wherein the first circuitry comprises an input connector configured to connect with an output connector of the standard communication cable that is also directly connectable to the monitoring device.
3. The system of claim 2 , wherein the second circuitry is further configured to send a signal representing the measured distal blood pressure value to the monitoring device.
4. The system of claim 2 , wherein the second circuitry is further configured to send a signal representing the measured distal blood pressure value to the monitoring device via a wired connection between the second circuitry and the monitoring device.
5. The system of claim 1 , wherein the second circuitry is further configured to send a signal representing the measured distal blood pressure value to the monitoring device.
6. The system of claim 1 , wherein the second circuitry is further configured to send a signal representing the measured distal blood pressure value to the monitoring device via a wired connection between the second circuitry and the monitoring device.