US 12,285,351 B2
Ostomy appliance having conductive ink circuit for leakage detection
Michael P. Nolan, Chicago, IL (US); Christina Augustyn, Chicago, IL (US); James Brandon Barker, Antioch, IL (US); Jonas P. Carlsson, Chicago, IL (US); Ryan S. Park, Northbrook, IL (US); Scott Janis, El Cerrito, CA (US); Stephanie Henze, San Mateo, CA (US); Christopher Michael Wlezien, Evanston, IL (US); Somasunder Vijay Sekaran, San Francisco, CA (US); Germain Verbrackel, San Francisco, CA (US); and Robert Lane, Larkspur, CA (US)
Assigned to HOLLISTER INCORPORATED, Libertyville, IL (US)
Appl. No. 17/281,142
Filed by Hollister Incorporated, Libertyville, IL (US)
PCT Filed Oct. 3, 2019, PCT No. PCT/US2019/054484
§ 371(c)(1), (2) Date Mar. 29, 2021,
PCT Pub. No. WO2020/076607, PCT Pub. Date Apr. 16, 2020.
Claims priority of provisional application 62/743,233, filed on Oct. 9, 2018.
Prior Publication US 2021/0338471 A1, Nov. 4, 2021
Int. Cl. A61F 5/44 (2006.01); A61F 5/443 (2006.01); A61F 5/448 (2006.01); G01M 3/16 (2006.01)
CPC A61F 5/4404 (2013.01) [A61F 5/443 (2013.01); A61F 5/448 (2013.01); G01M 3/16 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An ostomy appliance comprising:
a hydrocolloid skin barrier appliance including skin barrier, a backing layer, and a stoma opening extending through the skin barrier and the backing layer; and
a plurality of Radio Frequency Identification (RFID) circuits disposed on the skin barrier, wherein the plurality of RFID circuits are concentrically positioned relative to one another around the stoma opening, wherein each of the plurality of RFID circuits comprises:
a RFID transponder having an antenna; and
a conductive ink connected in series with the antenna and the RFID transponder, wherein the conductive ink is a dissolvable ink configured to dissolve in response to exposure to moisture, wherein the conductive ink is positioned to surround the stoma opening, and wherein the antenna is concentrically positioned to surround the conductive ink, and
wherein the RFID circuit is in a closed condition when the conductive ink extends continuously between the RFID transponder and the antenna and the RFID circuit is in an open condition when at least a portion of the conductive ink is dissolved.