DEVICE FOR ACQUIRING PHYSIOLOGICAL VARIABLES MEASURED IN A BODY

• US 20160183798A1
• Filed: 03/09/2016
• Published: 06/30/2016
• Est. Priority Date: 09/18/2009
• Status: Active Grant

• Current Assignee: St. Jude Medical Coordination Center BVBA (Abbott Laboratories)
• Original Assignee: St. Jude Medical Coordination Center BVBA (Abbott Laboratories)
• Inventors: HBINETTE, Ulrik, Samuelsson, Magnus
• Granted Patent: US 9,839,357 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2560/0214 of power generation or supply
• CPC Class Codes: A61B 2562/222 Electrical cables or leads therefor, e.g. coaxial cables or ribbon cables
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/0008 Temperature signals
• CPC Class Codes: A61B 5/0024 for multiple sensor units attached to the patient, e.g. using a body or personal area network
• CPC Class Codes: A61B 5/02007 Evaluating blood vessel condition, e.g. elasticity, compliance
• CPC Class Codes: A61B 5/02055 Simultaneously evaluating both cardiovascular condition and temperature
• CPC Class Codes: A61B 5/02141 Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits A61B5/02233, A61B5/0235 take precedence
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61B 5/02156 Calibration means
• CPC Class Codes: A61B 5/02158 provided with two or more sensor elements
• CPC Class Codes: A61B 5/026 Measuring blood flow A61B3/1233, A61B3/1241 take precedence
• CPC Class Codes: A61B 5/6851 Guide wires
• CPC Class Codes: A61B 5/743 Displaying an image simultaneously with additional graphical information, e.g. symbols, charts, function plots

Abstract

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.

Claims

1. A system comprising:

a distal pressure sensor configured to measure distal blood pressure of an individual and to provide a signal representing a measured distal blood pressure value;

a receiver configured to receive both (i) a signal representing a measured aortic blood pressure value measured by an aortic pressure sensor, and (ii) a signal representing the measured distal blood pressure value, the receiver comprising a display configured to display data that is based on at least the measured aortic blood pressure value and the measured distal blood pressure value;

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 substantially 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.

2. The system of claim 1, wherein the communication interface is configured to eavesdrop on the signal representing the measured aortic blood pressure value by electrically tapping into a conductor of a wired aortic channel at a location between the aortic pressure sensor and the monitoring device without affecting the signal carried over the wired aortic channel.

3. The system of claim 1, wherein the communication interface is configured to eavesdrop on the signal representing the measured aortic blood pressure value by sensing at least one of a magnetic field and an electric field in the vicinity of a wired aortic channel that is created by the signal passing through a conductor of the wired aortic channel at a location between the aortic pressure sensor and the monitoring device without affecting the signal carried over the wired aortic channel.

4. 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.

5. The system of claim 1, wherein the communication interface is pre-mounted on a standard communication cable that forms a wired aortic channel connecting the aortic pressure sensor and the monitoring device.

6. The system of claim 1, further comprising at least one standard communication cable that forms a wired aortic channel connecting the aortic pressure sensor and the monitoring device, wherein the communication interface is connectable to the at least one standard communication cable, such that connectors of the wired aortic channel can be disconnected and reconnected via the communication interface.

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 4, 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.

11. The system of claim 4, 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.

12. The system of claim 1, wherein the communication interface is configured to perform signal conditioning.

13. 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.

14. The system of claim 10, 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 11, 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.

16. A system comprising:

a receiver configured to 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 display configured to display data generated utilizing at least the measured aortic blood pressure value and the measured physiological variable;

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 substantially 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.

17. The system of claim 16, wherein the communication interface is further configured to (i) receive the signal representing the measured physiological variable via a wired connection between the physiological sensor and the communication interface, and (ii) send a signal representing the measured physiological variable to the receiver.

18. The system of claim 16, wherein the physiological variable is distal blood pressure, blood flow, or temperature.

19. The system of claim 16, wherein the communication interface is configured to eavesdrop on the measured aortic blood pressure value by electrically tapping into a conductor of a wired aortic channel at a location between the aortic pressure sensor and the monitoring device without affecting the signal carried over the wired aortic channel.

20. The system of claim 16, wherein the communication interface is configured to eavesdrop on the measured aortic blood pressure value by sensing at least one of a magnetic field and an electric field in the vicinity of a wired aortic channel that is created by the signal passing through a conductor of the wired aortic channel at a location between the aortic pressure sensor and the monitoring device without affecting the signal carried over the wired aortic channel.

21. The system of claim 16, 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.

22. The system of claim 16, further comprising at least one standard communication cable that forms a wired aortic channel connecting the aortic pressure sensor and the monitoring device, wherein the communication interface is connectable to the at least one standard communication cable, such that connectors of the wired aortic channel can be disconnected and reconnected via the communication interface.

23. The system of claim 21, 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.

24. The system of claim 21, 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.

25. The system of claim 16, wherein the communication interface is configured to perform signal conditioning.

26. The system of claim 16, 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.

27. The system of claim 23, 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.

28. The system of claim 24, 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.

29. A receiver comprising:

a first input configured to receive a signal representing measured aortic blood pressure values generated by an aortic pressure sensor via a wireless transmission of the signal representing the measured aortic blood pressure values from a communication interface that extracts a signal representing the measured aortic blood pressure values from a wired aortic channel;

a second input configured to receive a signal representing measured distal blood pressure values generated by a distal pressure sensor via a wired transmission of the signal representing the measured distal blood pressure values;

a processor configured to generate a metric indicating an extent of a stenosis in a blood vessel, the metric being based on at least the measured aortic blood pressure values and the measured distal blood pressure values; and

a display configured to display the metric indicating the extent of the stenosis in the blood vessel.

30. A system comprising:

a distal pressure sensor configured to measure distal blood pressure of an individual and to provide information representing the measured distal blood pressure;

a receiver configured to receive both (i) information representing a measured aortic blood pressure measured by an aortic pressure sensor, and (ii) information representing the measured distal blood pressure, the receiver comprising a display configured to display data that is based on at least the measured aortic blood pressure and the measured distal blood pressure;

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) send information representing the measured aortic blood pressure to the receiver via a wireless connection between the communication interface and the receiver.