US 11,712,204 B2
Swallowable, food-based, digestible wireless device for measuring gastric pH
Hanqing Jiang, Chandler, AZ (US); Haokai Yang, Tempe, AZ (US); and Wenwen Xu, Mesa, AZ (US)
Assigned to ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY, Scottsdale, AZ (US)
Filed by ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY, Scottsdale, AZ (US)
Filed on Nov. 20, 2020, as Appl. No. 17/100,116.
Application 17/100,116 is a division of application No. 16/280,824, filed on Feb. 20, 2019, granted, now 10,842,438.
Claims priority of provisional application 62/632,545, filed on Feb. 20, 2018.
Prior Publication US 2021/0068757 A1, Mar. 11, 2021
Int. Cl. A61B 5/00 (2006.01); G01N 29/22 (2006.01); G01N 29/24 (2006.01); G01N 29/036 (2006.01); A61B 5/07 (2006.01); A61B 5/145 (2006.01); A61B 5/1486 (2006.01); B41M 3/00 (2006.01)
CPC A61B 5/6861 (2013.01) [A61B 5/073 (2013.01); A61B 5/14539 (2013.01); A61B 5/14865 (2013.01); A61B 5/4238 (2013.01); B41M 3/006 (2013.01); G01N 29/036 (2013.01); G01N 29/222 (2013.01); G01N 29/2481 (2013.01); A61B 2562/125 (2013.01); A61B 2562/166 (2013.01); G01N 2291/014 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of assembling a swallowable pH sensor, the method comprising:
providing a substrate;
printing an electrical circuit pattern on a top surface of the substrate, the electrical circuit pattern including a plurality of interdigitated electrodes, and an antenna portion; and
rolling the substrate into a cylindrical form, wherein the plurality of interdigitated electrodes are positioned on an outermost layer of the rolled substrate and wherein the rolling of the substrate causes the antenna portion of the electrical circuit pattern to form a coil shape;
wherein printing the electrical circuit pattern on the top surface of the substrate includes printing:
a first plurality of linear electrodes arranged in parallel and coupled to a first node line extending perpendicular to the first plurality of linear electrodes,
a second plurality of linear electrodes arrange in parallel, interdigitated with the first plurality of linear electrodes and coupled to a second node line extending perpendicular to the second plurality of linear electrodes,
a linear portion extending from the first node line, and
an angled portion extending from the second node line to a distal end of the linear portion to form an angle between the linear portion and the angled portion.