Study on Alleviation Pressure Cushion

Abstract

The alleviation pressure (AP) cushion is a dynamic cushion system with three bladders at the pelvic region. The bladders can be deflated and inflated in a certain sequence to relieve the pressure on the ischial tuberosiites (IT) and coccyx/sacrum. The design of the foam base, bladder and pneumatic and electronic system of the AP cushion is discussed in this paper. And testing is conducted to verify the effectiveness of the AP cushion.