| 摘要 |
<p>An open cell foam pad is ripple-cut to create a convoluted face of hills (39) and valleys (41). A plurality of air-flow channels (43) are cut through the pad in each valley (41) formed. The channels (43) with plugs therein provide the user of the pad with the ability to direct air circulation through the pad to certain parts of the body. These air channels (43) also function to dissipate excess body fluids or medicines. For situations demanding the highest possible amount of air circulation, the ripple-cut pad with open air-flow channels (43) is flat-topped. The size of the flat area (49) on each hill (39) is determined by the weight of body to be supported. For a body weight under 100 pounds (45 kg), a maximum area of 1/2 inch by 1/2 inch (12,7 mm x 12,7 mm) across is used with a contact surface to open space ratio of 1 : 3. For a body weight between 100 and 150 pounds (45 - 68 kg), a maximum area of 1 inch by 1 1/4 inch (25,4 mm x 31,7 mm) is used with a contact surface to open space ratio of 1 : 1. For a body weight greater than 150 pounds (68 kg), a maximum of area of 1 1/4 inch (31,7 mm) across is used.</p> |
