DEVICE FOR ACQUIRING PHYSIOLOGICAL VARIABLES MEASURED IN A BODY

• US 20110071407A1
• Filed: 09/18/2009
• Published: 03/24/2011
• Est. Priority Date: 09/18/2009
• Status: Active Grant

• Current Assignee: St. Jude Medical Coordination Center BVBA (Abbott Laboratories Incorporated)
• Original Assignee: Radi Medical System AB
• Inventors: SAMUELSSON, Magnus, HÜBINETTE, Ulrik
• Granted Patent: US 9,301,699 B2
• Time in Patent Office: Days
• US Class Current: 600/485
• 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

The present invention relates to an eavesdropping device for monitoring measured physiological variables of an individual, which eavesdropping device comprises a receiver and a communication interface. The eavesdropping device of the present invention is typically applied in a system comprising a first sensor arranged to be disposed in or outside the body of the individual for measuring aortic blood pressure P_a, and a second sensor arranged for measuring distal blood pressure P_d. Further, the system comprises a central monitoring device for monitoring the measured physiological variables and a communication link between the sensors and the central monitoring device for communicating signals representing the measured physiological variables from the sensors to the central monitoring device. The eavesdropping device is configured such that the communication interface is arranged at the communication link to communicate at least the signal representing the aortic blood pressure to a monitor of the eavesdropping device. Moreover, the receiver of the eavesdropping device is connected to the communication link, in parallel with the central monitoring device. The signal representing the aortic blood pressure P_a is communicated to the receiver via a high-impedance connection at the communication interface, and the receiver of the eavesdropping device is further arranged to receive the signal representing the measured distal blood pressure P_d from the communication link. By means of the blood pressure signals of the respective sensor, FFR can be calculated.

Claims

1. An eavesdropping device for acquiring a measured physiological variable of an individual, said eavesdropping device comprising:

a receiver; and

a communication interface, configured to be positioned along a communication link between a first sensor, arranged for measuring aortic blood pressure of the individual and to provide a signal representing measured aortic blood pressure, and a central monitoring device for monitoring the measured aortic blood pressure;

wherein the communication interface includes a high impedance connection to the communication link configured to permit the communication interface to eavesdrop on said 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 said signal representing measured aortic blood pressure.

8. The device of claim 1, wherein:

the communication interface is arranged to be supplied with power from the central monitoring device.

9. The device of claim 1, wherein:

the communication interface is arranged with at least one battery for supply of power.

10. The device of claim 9, wherein:

the communication interface is arranged such that its at least one battery can be charged from the central monitoring device.

2. An eavesdropping device for acquiring measured physiological variables of an individual, said eavesdropping device comprising

a receiver and a communication interface, said eavesdropping device being applied in a system comprising:

a first sensor arranged for measuring aortic blood pressure of the individual and to provide signals representing the measured aortic blood pressure;

a second sensor arranged to be disposed in the body of the individual for measuring distal blood pressure and to provide signals representing the measured distal blood pressure;

a central monitoring device for monitoring the measured blood pressures; and

a communication link between the sensors and the central monitoring device for communicating said signals representing the measured blood pressure from the respective sensor to the central monitoring device;

wherein

the communication interface is arranged at the communication link to communicate at least the signal representing the aortic blood pressure to the receiver of the eavesdropping device; and

the receiver of the eavesdropping device is connected to said communication link via a high-impedance connection, in parallel with the central monitoring device, said signal representing the aortic blood pressure being communicated via said high-impedance connection via the communication interface, the receiver of the eavesdropping device further being arranged to receive the signal representing the measured distal blood pressure from said communication link.

3. The device of claim 2, wherein:

the communication link is arranged such that the signal representing measured aortic blood pressure is communicated via a wired connection to both the central monitoring device and the receiver, and the distal blood pressure is communicated via a wired connection to both the central monitoring device and said receiver.

4. The device of claim 2, wherein:

the communication link is arranged such that the signal representing measured aortic blood pressure is communicated via a wired connection to the central monitoring device and via a wireless connection to the receiver, while the distal blood pressure is communicated via a wired connection to both the central monitoring device and said receiver.

5. The device of claim 2, wherein:

the communication link is arranged such that the signal representing measured aortic blood pressure is communicated via a wired connection to the central monitoring device, and via a wireless connection to the receiver of the eavesdropping device, while the distal blood pressure is wirelessly communicated to both the central monitoring device and said receiver.

6. The device of claim 2, wherein:

the communication link is arranged such that the signal representing measured aortic blood pressure is communicated via wired connections to the central monitoring device and the receiver of the eavesdropping device, while the distal blood pressure is wirelessly communicated to both the central monitoring device and said receiver.

7. The device of claim 2, wherein:

the communication link is arranged such that the signal representing measured aortic blood pressure is communicated via wireless connections to the central monitoring device and the receiver of the eavesdropping device, while the distal blood pressure is wirelessly communicated to both the central monitoring device and said receiver.