Feeding tube with electromagnetic sensor
There is provided feeding tubes including an electromagnetic sensor including a sensor body comprising a core positioned at a distal end of the sensor lumen, and a wire extending along the length of the feeding tube, wherein an RF induced heating of the feeding tube in an MRI environment is below 5 degrees.
1. A tube comprising:
a first lumen for supplying substances;
a sensor lumen; and
an electromagnetic sensor disposed within the sensor lumen, the electromagnetic sensor comprising:
a sensor body comprising a core positioned at a distal end of said sensor lumen, and a twisted wire extending along the tube's length; wherein an RF induced heating of the tube in an MRI environment is below 5 degrees Celsius; and
wherein the electromagnetic sensor enables monitoring of a position and/or path the tube, when subjected to an electromagnetic field.
2. The tube of claim 1 , wherein said electromagnetic sensor body further comprises a printed circuit board (PCB).
3. The tube of claim 2 , wherein said sensor core and the wire are directly or indirectly attached to the PCB.
4. The tube of claim 2 , wherein the PCB is a FR-4 PCB.
5. The tube of claim 2 , wherein the core comprises one or more core wires wound therearound in between 40 and 300 turns.
6. The tube of claim 1 , wherein the one or more core wires is soldered to the PCB.
7. The tube of claim 1 , wherein the twisted wire comprises two intercalated wires.
8. The tube of claim 1 , wherein the RF induced heating of the tube in an MRI environment is below 3 degrees Celsius.
9. The tube of claim 1 , wherein the RF induced heating of the tube in an MRI environment is below 2 degrees Celsius.
10. The tube of claim 1 , wherein the RF induced heating of said tube in an MRI environment is below 1.5 degrees Celsius.
11. The tube of claim 1 , having a length of 500-2000 mm.
12. The tube of claim 1 , further comprising a radiopaque marker.
13. The tube of claim 1 , wherein the twisted wire has an outer diameter of 0.5 mm or less.
14. The tube of claim 1 , wherein the twisted wire has an outer diameter of 0.4 mm or less.
15. The tube of claim 1 , wherein the sensor body has an outer diameter of 1 mm or less.
16. The tube of claim 1 , wherein having a butt force in the range of 0.2-0.5 N.
17. The tube of claim 1 , wherein the tube is 10 Fr.
18. The tube of claim 1 , wherein the tube is 12 Fr.
19. The tube of claim 1 , wherein the twisted wire comprises a copper wire.