Abstract
Pressure ulcers are a common complication among wheelchair-bound population. They are resulted from prolonged exposure to high pressure, which restricts blood flow and leads to tissue necrosis. In this work, a continuous pressure monitoring system is developed for pressure ulcer prevention. The system consists of 64 pressure sensors on a 40×50 cm2 sheet. Real time pressure data and corresponding maps are displayed on a computer simultaneously. Furthermore, a posture detection procedure is proposed for sitting posture identification. Having information about the patient’s postural history, caregivers are capable of a better decision about repositioning and treating the patient.
Highlights
Sitting-acquired pressure ulcers are a common complication among wheelchair-bound population
A posture detection procedure is proposed for sitting posture identification
Due to its useful information about patient’s movement history, feasibility for simultaneous monitoring of pressure and alarming options, it is proposed that this system can be utilized for pressure ulcer prevention
Summary
Sitting-acquired pressure ulcers are a common complication among wheelchair-bound population. It is reported in literature that 36% to 50% of pressure sores are attributed to sitting in a wheelchair [1]. Pressure ulcers are resulted from prolonged exposure to high pressure, which restricts blood flow and prevents blood from bringing oxygen and nutrients to underlying tissues. High pressures are tolerable for short times only and will lead to tissue necrosis if they are unrelieved [7]. Et al [9] designed a particular type of seat for wheelchair-bound patients using electro-pneumatic pressure sensors. These kinds of pressure sensors are more expensive than capacitive and resistive sensors and slower in data acquisition. The prototype consists of 99 capacitive pressure sensors on a 17 × 22
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