Apparatus for the detection of moisture

Patent metadata

Field	Value
Publication number	US-10973701-B2
Application number	US-202016837442-A
Country	US
Kind code	B2
Filing date	Apr 1, 2020
Priority date	Mar 13, 2013
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

A moisture management apparatus monitors an area for moisture events and wirelessly transmits moisture-related information to one or more notification devices. An embodiment of the moisture management apparatus includes a substrate and one or more sensors supported by the substrate. The sensor(s) emit wireless signals indicative of the moisture-related information. A sensor event communication system forwards the sensor signals to another device, such as a notification device. The sensor event communication system may monitor other types of patient events. Portions of the moisture management apparatus and/or the moisture event communication system may be embodied in a patient support apparatus, such as a bed.

First claim

What is claimed is:

1. A moisture handling apparatus comprising
a first layer of material having a capillary property for encouraging moisture migration from a source zone to a destination zone, the capillary property being provided by moisture flow paths that are discrete and separated from one another along respective lengths of the flow paths,
a second layer of material situated adjacent to the first layer of material, and
a sensor coupled to one or both of the first layer and the second layer, the sensor including an RFID tag and one or more electrically conductive traces extending from the RFID tag, wherein the destination zone comprises the one or more of the electrically conductive traces.

2. The apparatus of claim 1 , further comprising capillary tubes which impart the capillary property.

3. The apparatus of claim 1 , further comprising capillary fibers which impart the capillary property.

4. The apparatus of claim 1 , wherein the apparatus extends laterally and longitudinally and the moisture flow paths extend substantially exclusively longitudinally from the source zone to the destination zone.

5. The apparatus of claim 1 , wherein the apparatus extends laterally and longitudinally and the moisture flow paths extend substantially exclusively laterally from the source zone to the destination zone.

6. The apparatus of claim 1 , wherein the apparatus extends laterally and longitudinally and the moisture flow paths extend both laterally and longitudinally from the source zone to the destination zone.

7. The apparatus of claim 1 , wherein the moisture flow paths extend radially between the source zone and the destination zone.

8. The apparatus of claim 1 , wherein the source zone is an inboard zone and the destination zone is an outboard zone.

9. The apparatus of claim 1 , wherein the source zone is an outboard zone and the destination zone is an inboard zone.

10. The apparatus of claim 1 , wherein the second layer comprises a substrate and the electrically conductive traces comprise conductive ink printed on the substrate.

11. The apparatus of claim 10 , wherein the RFID tag is coupled to the substrate.

12. The apparatus of claim 1 , further comprising an indicator responsive to the moisture.

13. The apparatus of claim 1 , wherein the destination zone includes a collector for collecting the migrated moisture.

14. The apparatus of claim 1 , wherein the destination zone is a collector for collecting the migrated moisture.

15. The apparatus of claim 1 , wherein the first layer of material comprises a microfiber sheet.

16. The apparatus of claim 15 , wherein the microfiber sheet comprises microfibers having a lineic mass of less than about 1 g/10 km.

17. The apparatus of claim 15 , wherein the microfiber sheet comprises microfibers having a diameter of less than about 9 micrometers.

18. The apparatus of claim 1 , wherein the second layer of material comprises a moisture impermeable sheet.

19. The apparatus of claim 1 , wherein the RFID tag comprises a passive RFID tag.

20. The apparatus of claim 1 , wherein an output signal from the RFID tag indicates whether the apparatus is dry or wet.

Assignees

• Hill Rom Services Inc

Inventors

• Heil Thomas F
• Dixon Steven Alan
• Gazagnes Laetitia
• Lane Ii Timothy A
• Ribble David Lance
• Srivastava Varad Narayan
• Lachenbruch Charles A
• Hood Michael Scott
• Howell Charles A
• Emmons Kirsten M

Classifications

• A61F13/42 Primary

  with wetness indicator or alarm · CPC title

• A61F2013/424

  having an electronic device · CPC title

• A61B5/202

  Assessing bladder functions, e.g. incontinence assessment · CPC title

• A61G7/05

  Parts, details or accessories of beds (devices for prevention against falling out A47C21/08, A47D7/00 {; mattresses A47C27/00}) · CPC title

• A61G7/02

  with toilet conveniences, or specially adapted for use with toilets · CPC title