Incontinence detection systems for hospital beds
An incontinence detection system monitors an area for moisture events and wirelessly transmits moisture-related information to one or more notification devices. The system has a pad that 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. Portions of the system are included in a patient support apparatus, such as a bed.
1. An incontinence detection system for use with a patient support apparatus having a head end and a foot end, the incontinence detection system comprising
an incontinence detection pad having a passive radio frequency identification (RFID) tag,
a reader attachable to the patient support apparatus and operable to read data from the passive RFID tag,
a first antenna attachable to the patient support apparatus,
a second antenna housed separately from the first antenna and attachable to the patient support apparatus at a location spaced from the first antenna, wherein the first and second antenna are electrically coupled to the reader, wherein the passive RFID tag is excited by energy emitted from at least one of the first and second antennae and the data from the RFID tag of the incontinence pad is reflected back to at least one of the first and second antennae,
a visual indicator electrically coupled to the reader by a first cable having sufficient length to permit the visual indicator to be mounted adjacent the foot end of the patient support apparatus, and
an output port electrically coupled to the reader by a second cable having sufficient length to permit the output port to be mounted adjacent the head end of the patient support apparatus.
2. The incontinence detection system of claim 1 , wherein the reader is operable to write data to the passive RFID tag via the first and second antenna.
3. The incontinence detection system of claim 1 , wherein a first bit of the data stored in the passive RFID tag is set in response to the incontinence detection pad detecting wetness.
4. The incontinence detection system of claim 3 , wherein the first bit is not set if the incontinence detection pad does not detect wetness.
5. The incontinence detection system of claim 4 , wherein the first bit changes from being set to not being set in response to the incontinence detection pad becoming sufficiently dry after the incontinence detection pad has detected wetness, wherein a second bit of data stored in the passive RFID tag is set in response to the incontinence detection pad detecting wetness, and wherein the second bit of data remains set even after the incontinence detection pad becomes sufficiently dry after the incontinence detection pad has detected wetness to cause the first bit to change states back to not being set.
6. The incontinence detection system of claim 5 , wherein the second bit serves as a kill bit that indicates to the reader that the incontinence detection pad cannot be used again once it becomes dry after having been wet.
7. The incontinence detection system of claim 1 , wherein at least a portion of the data transferred between the passive RFID tag and the reader is encrypted.
8. The incontinence detection system of claim 1 , wherein the incontinence detection pad comprises a top sheet, a backsheet having a pair of electrodes that are printed on the backsheet and that are electrically coupled to the passive RFID tag, and an absorbent core sandwiched between the top sheet and the backsheet.
9. The incontinence detection system of claim 1 , wherein the first antenna is electrically coupled to the reader by a third cable that is routed through a first gap between first and second mattress support deck sections of the patient support apparatus.
10. The incontinence detection system of claim 9 , wherein the second antenna is electrically coupled to the reader by a fourth cable that is also routed through the first gap.
11. The incontinence detection system of claim 9 , wherein the second antenna is electrically coupled to the reader by a fourth cable that is routed through a second gap between the second mattress support deck section and a third mattress support deck section of the patient support apparatus.
12. The incontinence detection system of claim 1 , wherein the first antenna is electrically coupled to the reader by a third cable that is routed through a first hole provided in a first mattress support deck section of the patient support apparatus.
13. The incontinence detection system of claim 12 , wherein the second antenna is electrically coupled to the reader by a fourth cable that is routed through a second hole provided in a second mattress support deck section of the patient support apparatus.
14. The incontinence detection system of claim 9 , wherein the second antenna is electrically coupled to the reader by a fourth cable that is routed through a second gap between the second mattress support deck section and a third mattress support deck section of the patient support apparatus.
15. The incontinence detection system of claim 1 , wherein the output port comprises any one or more of the following: a female ¼ inch receptacle, a multi-contact connector, an RJ-45 connector, a 37-pin connector, or an RS-232 connector.
16. The incontinence detection system of claim 1 , wherein the visual indicator is configured to be mounted to a portion of a foot section of the patient support apparatus that extends and retracts, and wherein the first cable is provided with sufficient slack to permit the extension and retraction of the portion of the foot section through its full range of movement.
17. The incontinence detection system of claim 1 , wherein, when the incontinence detection pad is in communication with the reader, the visual indicator is illuminated a first color in response to the incontinence detection pad detecting wetness and the visual indicator is illuminated a second color in response to the incontinence detection pad not detecting wetness.
18. The incontinence detection system of claim 17 , wherein the visual indicator flashes in response to the incontinence detection pad detecting wetness.
19. The incontinence detection system of claim 17 , wherein the first color comprises amber or yellow and the second color comprises green.
20. The incontinence detection system of claim 17 , wherein the visual indicator is illuminated a third color if the reader is not in communication with the incontinence detection pad.