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 system comprising:
a receiver configured to wirelessly receive both (i) a signal representing a measured aortic blood pressure value measured by an aortic pressure sensor, and (ii) a signal representing a measured distal blood pressure value measured by a distal pressure sensor, the receiver comprising a processor configured to calculate a metric indicating an extent of a stenosis in a blood vessel, the metric being based on at least the measured aortic blood pressure value and the measured distal blood pressure value, and a display configured to display said metric;
a communication interface configured to (i) receive a signal representing the measured aortic blood pressure value from the aortic pressure sensor via a wired connection between the aortic pressure sensor and the communication interface, (ii) provide a signal representing the measured aortic blood pressure value to a monitoring device via a wired connection between the communication interface and the monitoring device without changing the measured aortic blood pressure value, and (iii) provide a signal representing the measured aortic blood pressure value to the receiver via a wireless connection between the communication interface and the receiver,
wherein the wired connection between the aortic pressure sensor and the communication interface comprises a standard communication cable for connecting the aortic pressure sensor to the monitoring device, and
wherein the communication interface 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.
2. The system of claim 1 , further comprising a control unit configured to (i) receive the signal representing the measured distal blood pressure value via a connection between the distal pressure sensor and the control unit, and (ii) send a signal representing the measured distal blood pressure value to the receiver via a wireless connection between the control unit and the receiver.
3. The system of claim 2 , wherein the control unit is further configured to send the signal representing the measured distal blood pressure value to the monitoring device via a wireless connection between the control unit and the monitoring device.
4. The system of claim 3 , wherein the signal sent by the control unit to the monitoring device is in a format that complies with an ANSI/AAMI BP-22 standard.
5. The system of claim 2 , wherein the control unit is further configured to send the signal representing the measured distal blood pressure value to the monitoring device via a wired connection between the control unit and the monitoring device.
6. The system of claim 5 , wherein the signal sent by the control unit to the monitoring device is in a format that complies with an ANSI/AAMI BP-22 standard.
7. The system of claim 1 , wherein the communication interface includes at least one battery for supply of power.
8. The system of claim 7 , wherein the communication interface is configured such that the at least one battery is chargeable via the monitoring device.
9. The system of claim 1 , wherein the communication interface is configured to be supplied with power from the monitoring device.
10. The system of claim 1 , wherein the communication interface is configured to receive the signal representing the measured aortic blood pressure value from the aortic pressure sensor and send the signal representing the measured aortic blood pressure value to the receiver without calibration.
11. A system comprising:
a receiver configured to wirelessly receive both (i) a signal representing a measured aortic blood pressure value measured by an aortic pressure sensor, and (ii) a signal representing a measured physiological variable measured by a physiological sensor, the receiver comprising a processor configured to calculate a metric indicating an extent of a stenosis in a blood vessel, the metric being based on at least the measured aortic blood pressure value and the measured physiological variable, and a display configured to display said metric;
a communication interface configured to (i) receive a signal representing the measured aortic blood pressure value from the aortic pressure sensor via a wired connection between the aortic pressure sensor and the communication interface, (ii) provide a signal representing the measured aortic blood pressure value to a monitoring device via a wired connection between the communication interface and the monitoring device without changing the measured aortic blood pressure value, and (iii) send a signal representing the measured aortic blood pressure value to the receiver via a wireless connection between the communication interface and the receiver,
wherein the wired connection between the aortic pressure sensor and the communication interface comprises a standard communication cable for connecting the aortic pressure sensor to the monitoring device, and
the communication interface 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.
12. The system of claim 11 , further comprising a control unit configured to (i) receive the signal representing the measured physiological variable via a connection between the physiological sensor and the control unit, and (ii) send a signal representing the measured physiological variable to the receiver via a wireless connection between the control unit and the receiver.
13. The system of claim 12 , wherein the control unit is further configured to send the signal representing the measured physiological variable to the monitoring device via a wireless connection between the control unit and the monitoring device.
14. The system of claim 13 , wherein the signal sent by the control unit to the monitoring device is in a format that complies with an ANSI/AAMI BP-22 standard.
15. The system of claim 12 , wherein the control unit is further configured to send the signal representing the measured physiological variable to the monitoring device via a wired connection between the control unit and the monitoring device.
16. The system of claim 15 , wherein the signal sent by the control unit to the monitoring device is in a format that complies with an ANSI/AAMI BP-22 standard.
17. The system of claim 11 , wherein the communication interface is configured to receive the signal representing the measured aortic blood pressure value from the aortic pressure sensor and send the signal representing the measured aortic blood pressure value to the receiver without calibration.
18. A system comprising:
a receiver configured to wirelessly receive both (i) information representing a measured aortic blood pressure measured by an aortic pressure sensor, and (ii) information representing a measured distal blood pressure measured by a distal pressure sensor, the receiver comprising a processor configured to calculate a metric indicating an extent of a stenosis in a blood vessel, the metric being based on at least the measured aortic blood pressure and the measured distal blood pressure, and a display configured to display said metric; and
a communication interface configured to (i) receive information representing the measured aortic blood pressure from the aortic pressure sensor via a wired connection between the aortic pressure sensor and the communication interface, (ii) provide information representing the measured aortic blood pressure to a monitoring device via a wired connection between the communication interface and the monitoring device, and (iii) provide information representing the measured aortic blood pressure to the receiver via a wireless connection between the communication interface and the receiver,
wherein the wired connection between the aortic pressure sensor and the communication interface comprises a standard communication cable for connecting the aortic pressure sensor to the monitoring device, and
the communication interface 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.