| 摘要 |
PURPOSE: To surely prevent a bedsore by forming two upper side air bags communicated in the horizontal direction as being formed in comb shape and penetrating mutually so as to provide an air layer totally up to two stages stereoscopically by welding the periphery of a movable seat. CONSTITUTION: Two kinds of upper side air bags 21, 22 are provided which are mutually communicated in the horizontal direction on the upper side of a bedsore preventing mat as being formed in the comb shape and penetrating mutually by welding first and second movable seats 11, 12 by two upper side welding bands 15a, 15b which form a closed curve. Also, a flat jet air supply layer 25 located at nearly the entire lower face of the bedsore preventing mat is formed by welding the second and third movable seats 12, 13 at their peripheral parts. A large number of air blowout holes 26 communicated with the jet air supply layer 25 are formed at the part of welding bands 15a, 15b, and an air supply device 30 is connected so as to supply the air to the upper side air bags 21, 22 and the jet air supply layer 25, respectively. |
