Method of detecting the presence of insults in an absorbent article

• US 20070049883A1
• Filed: 08/31/2005
• Published: 03/01/2007
• Est. Priority Date: 08/31/2005
• Status: Active Grant

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Long, Andrew, Ales, Thomas, Collins, Meghan
• Granted Patent: US 7,355,090 B2
• Time in Patent Office: Days
• US Class Current: 604/361
• CPC Class Codes: A61F 13/42 with wetness indicator or alarm

Abstract

A method of determining the presence of an insult in an absorbent article is disclosed. The amount of time that elapses between the activation of an alarm and the determination of the presence of a subsequent insult is determined. This elapsed time is compared to a time threshold value and either an insult alarm or a saturation alarm is activated as a function of the comparison. After activation of the alarm for an alarm period, the electrical property of the article is determined at a second time occurring at least a preset period after the end of the alarm period to allow the electrical property to stabilize before determining the electrical property.

Claims

1. A method of detecting and communicating to a caregiver and/or a wearer the presence of an insult within an absorbent article, said method comprising:

monitoring an electrical property of the article as the article is being worn by the wearer;

determining the electrical property of the article at a first time, the electrical property being expressed as a first indicator value;

activating an insult alarm to inform the caregiver and/or the wearer of the presence of an insult in the article when the first indicator value is indicative of an insult;

determining the electrical property of the article after activating the insult alarm, the electrical property being expressed as a second indicator value;

determining the second indicator value is indicative of the presence of a second insult within the article;

determining the amount of time that elapsed between the activation of the alarm and the determination of the indication of the presence of the second insult;

comparing the elapsed time to a time threshold value and activating either an insult alarm or a saturation alarm as a function of the comparison.

2. The method as set forth in claim 1 wherein the first and second indicator values are indicative of an insult when compared to a magnitude threshold value.

3. The method as set forth in claim 2 wherein the monitored electrical property of the article is resistance, and the first and second indicator values are indicative of an insult when the values are less than the magnitude resistance threshold.

4. The method as set forth in claim 2 wherein the monitored electrical property of the article is conductance, and the first and second indicator values are indicative of an insult when the values are greater than the magnitude conductance threshold.

5. The method as set forth in claim 1 wherein the time threshold value is between about 60 seconds and about 300 seconds.

6. The method as set forth in claim 1 wherein the time threshold value is between about 90 seconds and about 180 seconds.

7. The method as set forth in claim 1 wherein the time threshold value is about 120 seconds.

8. The method as set forth in claim 1 wherein determining the electrical property of the article after activating the insult alarm comprises determining the electrical property of the article a preset period of time after activating the sensor insult signal.

9. A method of detecting and communicating to a caregiver and/or a wearer the presence of an insult within an absorbent article, said method comprising:

monitoring an electrical property of the article as the article is being worn by the wearer;

determining the electrical property of the article at a first time, the electrical property being expressed as a first indicator value;

activating an insult alarm for an alarm period to inform the caregiver and/or the wearer of the presence of a first insult in the article when the first indicator value is indicative of an insult;

determining the electrical property of the article at a second time occurring at least a preset period after the end of the alarm period, whereby the preset period allows the electrical property to stabilize, the electrical property being expressed as a second indicator value;

activating the insult alarm to inform the caregiver and/or the wearer of the presence of a second insult in the article when the second indicator value is indicative of an insult.

10. The method as set forth in claim 9 wherein the first and second indicator values are indicative of an insult when compared to a magnitude threshold value.

11. The method as set forth in claim 9 wherein said preset period lasts between about 5 seconds and 600 seconds.

12. The method as set forth in claim 9 wherein said preset period lasts between about 10 seconds and about 60 seconds.

13. The method as set forth in claim 9 wherein said preset period lasts about 15 seconds.

14. The method as set forth in claim 9 further comprising determining the amount of time that elapsed between the activation of the alarm and the determination of the indication of the presence of the second insult, and comparing the elapsed time to a time threshold value and activating either an insult alarm or a saturation alarm as a function of the comparison.