Ostomy monitoring system and method
An ostomy bag can include one or more sensors for measuring one or more metrics. An ostomy wafer can also include one or more sensors for measuring one or more metrics. The sensors can be temperature sensors and/or capacitive sensors, for example, and the metrics can include bag fill, leakage, skin irritation, and phase of stoma output, among others.
1. An ostomy wafer configured to be coupled to an ostomy bag, the ostomy wafer comprising:
an adhesive layer configured to adhere to skin around a stoma of a living person;
a flexible sensor layer coupled with the adhesive layer, the flexible sensor layer comprising a plurality of temperature sensors; and
a plurality of conductors wired to the plurality of temperature sensors, the plurality of conductors configured to be electrically coupled with a processor located at or proximate to the ostomy bag so that signals from the plurality of temperature sensors are electrically communicated to the processor,
wherein the flexible sensor layer comprises a neck and a body, the plurality of conductors being disposed in part on the neck.
2. The ostomy wafer of claim 1 , wherein the ostomy wafer further comprises a third layer configured to cover the flexible sensor layer such that the flexible sensor layer is sandwiched between the adhesive layer and the third layer.
3. The ostomy wafer of claim 2 , wherein the third layer comprises an adhesive configured to adhere to an ostomy bag.
4. The ostomy wafer of claim 1 , wherein the temperature sensors are arranged in concentric rings or concentric partial rings.
5. The ostomy wafer of claim 4 , wherein one or more of the concentric partial rings are severable so as to fit the ostomy wafer to different sized stomas.
6. The ostomy wafer of claim 4 , wherein the concentric partial rings comprise two or more rings.
7. The ostomy wafer of claim 1 , wherein the plurality of conductors comprise curved portions between the temperature sensors.
8. The ostomy wafer of claim 1 , wherein the plurality of temperature sensors are electrically connected in a matrix circuit.
9. The ostomy wafer of claim 1 , further comprising one or more capacitive sensors.
10. The ostomy wafer of claim 9 , wherein the one or more capacitive sensors are disposed on the flexible sensor layer or a second flexible sensor layer.
11. The ostomy wafer of claim 9 , wherein the one or more capacitive sensors are configured to detect moisture in adhesives of the adhesive layer.
12. The ostomy wafer of claim 1 , wherein a first temperature sensor of the plurality of temperature sensors is disposed on the neck as a reference sensor.
13. The ostomy wafer of claim 12 , wherein all other ones of the temperature sensors other than the first temperature sensor are disposed on the body.
14. The ostomy wafer of claim 1 , wherein the temperature sensors comprise first temperature sensors disposed in a first region closer to a center of the body and second temperature sensors disposed in a second region farther from the center of the body.
15. The ostomy wafer of claim 14 , wherein the second temperature sensors are used as reference temperature sensors.
16. The ostomy wafer of claim 1 , wherein the adhesive layer comprises hydrocolloid adhesives.
17. The ostomy wafer of claim 1 , further comprising a border ring surrounding the adhesive layer, the border ring comprising an adhesive side configured to adhere to the skin around the stoma.
18. The ostomy wafer of claim 17 , wherein the adhesive side of the border ring comprises acrylic adhesives or hydrocolloid adhesives.
19. The ostomy wafer of claim 1 , further comprising a printed circuit board (PCB) in electrical communication with the plurality of temperature sensors, the PCB configured to send the signals from the plurality of temperature sensors to the processor located at or proximate to the ostomy bag.
20. The ostomy wafer of claim 1 , in combination with an ostomy bag comprising a plurality of sensors.
21. The ostomy wafer of claim 1 , further comprising at least one antenna ring for wireless communication with the processor located at or proximate to the ostomy bag, the at least one antenna ring comprises conductive traces.
22. The ostomy wafer of claim 21 , wherein the at least one antenna ring is concentric with and located radially outward from the plurality of conductors, wherein the plurality of conductors comprise concentric rings.
23. The ostomy wafer of claim 21 , wherein the at least one antenna ring and the plurality of conductors cross at one or more locations.