A pressure mat for preventing pressure sores

Using a 0.4-mm thick Interlink conductive polymer pressure sensor, the pressure distribution under the buttocks was measured. The measured pressures under the ischial tuberosities were much higher when the subject was seated on a table than when seated on a cushion. A pressure mat incorporating an array of these sensors, to be placed under any bony protuberance, is proposed. When the pressure-time profile of any sensor exceeds safe limits, an alarm would be provided to the patient or caregiver. It is believed that this pressure mat could reduce the incidence of pressure sores in the spinal-cord injured, in the elderly, and in the operating room