Patent ID: 8866624
Filing Date: 2014-10-21
Classification: A61B,A61F,G01N

Abstract:
1. A signaling device for sensing and indicating the presence of a body exudate in an absorbent article, the device comprising: a housing; an attachment mechanism for removably attaching the housing to the absorbent article; and a capacitive sensor disposed within the housing, the capacitive sensor including an open face virtual capacitor having a ground plane positioned at a back of the sensor to prevent interference from a back side of the sensor wherein the capacitive sensor includes two open face virtual capacitors in an array and wherein the two open face virtual capacitors each have a diameter of 5 to 15 mm, wherein a spacing between the ground plane and the capacitors is 1 mm to 2.5 mm, wherein the signaling device is adapted to emit a signal when a change in a condition within the absorbent structure is sensed by the capacitive sensor.