Wireless sensor system and methods

A technology of sensors and resistors, applied in the field of wireless sensor systems and methods, capable of solving problems such as unaware patients

Active Publication Date: 2015-11-25
JPTECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] However, in the absence of a way to recognize when an incontinence event occurs, caregivers are often unaware of the patient's condition

Method used

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  • Wireless sensor system and methods
  • Wireless sensor system and methods
  • Wireless sensor system and methods

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Embodiment Construction

[0022] Several chemoresistor sensors are known to respond to chemical analytes. The polyaniline / carbon black (PANI / CB) sensor provides sensitivity to urine and feces through an acid-base reaction between amines in waste and the protonated polyaniline (PANI) polymer backbone. Ammonia in urine, a by-product of urea, deprotonates PANI to cause approximately 10 5 Ohm resistance increases. In some embodiments, the resistance may increase from about 10% to about 100,000% and vary with the area of ​​the PANI / CB sensor, eg, with the length and width of the PANI / CB sensor.

[0023] figure 1 A graph 100 is shown showing the change in resistance of an exemplary PANI / CB sensor to urine vapor, where the x-axis represents time in seconds and the y-axis represents resistance in kiloohms. The initial resistance of the PANI / CB sensor is approximately 500 ohms. Urine vapor exposure begins at about 40 s. At about 60 seconds, the resistance of the PANI / CB sensor is about 470 kilohms.

[002...

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Abstract

Incontinence management systems, methods, and sensors are provided that alert the caregiver when a patient's brief has been soiled. A resonant circuit includes a polyaniline / carbon black (PANI / CB) composite chemiresistor which undergoes a large impedance change upon exposure to the vapor or 'smell' of urine or feces. Due to the impedance change of the PANI / CB resistor, characteristics of the resonant circuit change when the sensor is exposed to urine or feces vapor. The sensor responds to an interrogating signal with a signal based least in part on the sensor's impedance and indicates the condition of the brief as soiled or clean.

Description

[0001] Incorporation by reference of any priority application [0002] Any and all applications claiming foreign or domestic priority in claims for patents filed with this application are hereby incorporated by reference pursuant to 37CRF 1.57. Background technique [0003] Incontinence rates of up to 60% of residents in nursing homes and as high as 66% of patients in acute care have been reported. Typically, intensive care units have the highest rates of incontinence. Skin lesions caused by incontinent dermatitis (IAD) occur in one-third of admitted patients. 41% of adults in long-term care facilities experienced some form of skin disease in the perineal area. IAD increases the chance of microbial skin infections and decubitus ulcers, which can result in longer hospital stays, increased treatment costs, higher risk of nosocomial infections, and higher morbidity and mortality. The cause of incontinence is often unknown. In some cases, incontinence may be caused by multiple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/42G01N27/12
CPCA61F13/42G01N27/126A61F2013/1513A61F2013/15146A61F2013/15154A61F2013/424A61F2013/426
Inventor 尼古拉斯·普罗科普克拉塞尔·爱德华·巴尔伯
Owner JPTECH
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