Abstract: A therapeutic device includes a first flexible layer having a plurality of interconnected raised chambers and passageways. The upper surface of a second flexible layer is positioned oppositely of the lower surface of the first flexible layer. The periphery of the overlying layers is heat sealed to form a plurality of chambers spaced from each other and connected by the passageways. A thermal responsive medium is introduced through the passageways into the chambers. Initially the chambers are not completely filled. Thereafter the overlying layers are further heat sealed to remove the passageways between the chambers. Consequently, the liquid that was present in the passageways is evacuated into the chambers, filling the chambers which are individually sealed from one another. For heat treatment application a third flexible layer is sealingly engaged to the lower surface of the second flexible layer and is wetted with an aqueous solution.

Abstract: A therapeutic device for a body portion utilizing a thermal responsive medium includes a first flexible layer having a plurality of interconnected raised chambers and passageways. The upper surface of a second flexible layer is sealingly engaged to the lower surface of the first flexible layer to form a plurality of chambers spaced from each other and connected by the passageways. The chambers and the passageways are filled with a thermal responsive medium which is heated, cooled or frozen, depending on the use. For applying heat treatment a third flexible layer is sealingly engaged to the lower surface of the second flexible layer, and a flexible insulating member is removably connected to the lower surface of the third flexible layer. The flexible insulating member has a plurality of raised cells containing an insulating medium.