Feeding tube with electromagnetic sensor and camera
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 feeding tube comprising:
a feeding lumen for supplying substances or pressure to a subject's stomach and/or duodenum, through the esophagus; and
a sensor lumen,
an electromagnetic sensor comprising:
a sensor body comprising a core positioned at a distal end of said sensor lumen, and
a wire extending along the length of the sensor lumen,
a camera positioned at a distal end of the feeding tube,
wherein an RF induced heating of said feeding tube in an MRI environment is below 5 degrees Celsius.
2 . The feeding tube of claim 1 , wherein said electromagnetic sensor body further comprises a printed circuit board (PCB).
3 . The feeding tube of claim 2 , wherein said sensor core and said wire are directly or indirectly attached to said PCB.
4 . The feeding tube of claim 2 , wherein said PCB is a FR-4 PCB.
5 . The feeding tube of claim 1 , wherein said wire is twisted.
6 . The feeding tube of claim 5 , wherein said twisted wire comprises two intercalated wires.
7 . The feeding tube of claim 1 , wherein the RF induced heating of said feeding tube in an MRI environment is below 3 degrees Celsius.
8 . The feeding tube of claim 1 , wherein the RF induced heating of said feeding tube in an MRI environment is below 2 degrees Celsius.
9 . The feeding tube of claim 1 , wherein the RF induced heating of said feeding tube in an MRI environment is below 1.5 degrees Celsius.
10 . The feeding tube of claim 1 having a butt force (N) in the range of 0.2-0.5 N.
11 . The feeding tube of claim 1 , being at least 900 mm long.
12 . The feeding tube of claim 1 , having a length of 900-1400 mm.
13 . The feeding tube of claim 1 , further comprising a radiopaque marker.
14 . The feeding tube of claim 5 , wherein the twisted wire has an outer diameter of 0.5 mm or less.
15 . The feeding tube of claim 5 , wherein the twisted wire has an outer diameter of 0.4 mm or less.
16 . The feeding tube of claim 1 , wherein the sensor body has an outer diameter of 1 mm or less.
17 . The feeding tube of claim 1 , further comprising one or more LEDs positioned so as to illuminate a field of view of the camera.
18 . The feeding tube of claim 1 , further comprising an air insufflation lumen.