Device and method for sensing signals from a body

1. A device for transmitting and sensing signals, the device comprising:

a non-conductive substrate configured to be adhered to a skin of a subject;

a first and a second electrical contacts printed on said substrate;

a disposable connector, configured to be connected to a compatible cable connector of a cable receiving signals from said contacts via said disposable connector for transmitting the signals to a system for measuring bioimpedance, said disposable connector having a symmetric shape such that mating between said disposable connector and said compatible cable connector is established at either one of two flipped orientations; and

an authentication tag mounted on, printed on, or integrated with, said disposable connector and an authentication line for transmitting signals from the authentication tag to a processor including at least an alert indicating that the device needs to be replaced, wherein the authentication line is a dedicated conducting line disposed between a first conducting line and a second conducting line.

2. The device according to claim 1 , further comprising a label indicative that the device is for attachment to each of eight different locations of an upper part of a body of a subject.

3. The device of claim 2 , wherein said eight different locations comprise: a ventral upper-left region, a ventral upper-right region, a ventral lower-left region, a ventral lower-right region, a dorsal upper-left region, a dorsal upper-right region, a dorsal lower- left region and a dorsal lower-right region.

4. The device of claim 1 , wherein a length of the device, from said contacts to said disposable connector is less than 25 cm.

5. The device according to claim 4 , comprising printed conducting lines leading from said contacts to said disposable connector.

6. The device according to claim 1 , wherein said disposable connector comprises the first conducting line connected to said first electrical contact, the second conducting line connected to said second electrical contact, and at least one floating conducting line between said first and said second conducting lines.

7. The device according to claim 6 , wherein said conducting lines are printed conducting lines.

8. The device according to claim 6 , wherein said conducting lines, and said printed electrical contacts engage a same plane.

9. The device according to claim 1 , wherein said disposable connector is attached to an integral extension of said non-conductive substrate, in a manner that said disposable connector and said non-conductive substrate are parallel to each other.

10. The device according to claim 1 , wherein said authentication tag is configured for authenticating the device, wherein a combined thickness of said disposable connector and said authentication tag is less than 4 mm.

11. The device according to claim 10 , wherein said authentication tag comprises an electronic chip having an internal clock or counter, and is configured to generate an alert signal and transmitting said alert signal over said cable to said system, responsively to a state of said internal clock or counter.

12. The device according to claim 1 , wherein said cable includes a plurality of separate electric shields for lines conducting a transmit signal and lines conducting a receive signal.

13. The device according to claim 1 , wherein at least one of the disposable connector and said cable includes a mark indicative of a connection orientation.

14. The device according to claim 1 , wherein said cable is a multi-connection cable.

15. A method of transmitting and sensing signals, the method comprising:

attaching to a body of a subject a plurality of devices for transmitting and sensing signals, a plurality of devices, wherein each device includes

a non-conductive substrate configured to be adhered to a skin of a subject;

a first and a second electrical contacts printed on said substrate;

a disposable connector, configured to be connected to a compatible cable connector of a cable receiving signals from said contacts via said disposable connector for transmitting the signals to a system for measuring bioimpedance, said disposable connector having a symmetric shape such that mating between said disposable connector and said compatible cable connector is established at either one of two flipped orientations; and

an authentication tag mounted on, printed on, or integrated with, said disposable connector and an authentication line for transmitting signals from the authentication tag to a processor including at least an alert indicating that the device needs to be replaced, wherein the authentication line is a dedicated conducting line disposed between a first conducting line and a second conducting line;

connecting a multi-connection cable between said plurality of devices and a connector panel of a bioimpedance measuring system.

16. The method of claim 15 , wherein each device is configured for attachment to each of eight different locations of an upper part of a body of a subject.

17. The method of claim 16 , wherein said eight different locations comprise: a ventral upper-left region, a ventral upper-right region, a ventral lower-left region, a ventral lower-right region, a dorsal upper-left region, a dorsal upper-right region, a dorsal lower- left region and a dorsal lower-right region.

18. The method of claim 15 , wherein a length of each device, from said contacts to said disposable connector is less than 25 cm.

19. The method of claim 18 , comprising printed conducting lines leading from said contacts to said disposable connector.