Patent ID: 8024828

Claim:
An air cell used by being mounted on the seating surface or bed to prevent bed sores which generate on a seated person or a patient, the air cell comprising: an air bag configured to be able to contain air in its interior and terminating at an opening end portion which defines an opening portion; a base member to which the opening end portion of the air bag is attached, the base member being configured to close the opening portion of the air bag; an air chamber configured by air bag and the upper surface of the base member; a thin film portion provided at the upper surface of the base member which forms the bottom surface of the air chamber, the thin film portion capable of elastically deforming in the up-and-down direction; an extending member provided in the air chamber, the extending member configured so as to extend upwardly from the upper surface of the thin film portion; and detecting means provided under the thin film portion, the detecting means for detecting downward deformation of the thin film portion.