A heat pack includes a housing, a first phase change material (PCM) that is contained in the housing, and a thermal storage buffer that is contained in the housing. The thermal storage buffer includes a second PCM. An initiator is in operative contact with the first PCM. Activation of the initiator causes crystallization of the first PCM, and the first PCM cooperates with the thermal storage buffer to provide heat at a predetermined temperature range upon crystallization of the first PCM.

A heat pack includes a housing, a first phase change material (PCM) that is contained in the housing, and a thermal storage buffer that is contained in the housing. The thermal storage buffer includes a second PCM. An initiator is in operative contact with the first PCM. Activation of the initiator causes crystallization of the first PCM, and the first PCM cooperates with the thermal storage buffer to provide heat at a predetermined temperature range upon crystallization of the first PCM.

A chemical thermal pack is provided having a flexible liquid impermeable pouch, an endothermic/exothermic producing chemical, and a liquid permeable pouch. The flexible liquid impermeable pouch has a resealable closure edge and a scored tamper seal. There is one of an endothermic and an exothermic producing chemical. The liquid permeable pouch is contained within the liquid impermeable pouch and provides a cavity for containing the endothermic/exothermic producing chemical. A user breaches the scored tamper seal and inserts a fluid solvent within the liquid impermeable pouch and reseals the closure edge. The solvent is reactive with the chemical to impart one of an exothermic reaction and an endothermic reaction. A method is also provided.

A heat generating device includes a heat generating element enclosed in an air-permeable stretch bag. The heat generating element includes an air-permeable first side adapted to be located proximal to the skin of a wearer, a second side adapted to be located distal to the skin of a wearer, and a heat generating member interposed between the first side and the second side. It is preferred that a part of the heat generating element is fixed to a part of the inner side of the stretch bag in the overlap between the stretch bag and the heat generating element in a plan view of the heat generating device.

A hand therapy kit includes a housing having a lid that is expandable from a folded position to an unfolded position to expose a working surface on an inside of the lid. An elastic cord is attached at two or more anchor points on the working surface to define at least one gap for receiving a finger. The finger can be therapeutically exercised by moving from a first position proximal to the working surface to a second position distal to the working surface. The hand therapy kit can also include removable hand therapy modules.

Hypothermic treatment sacks are provided. A hypothermic treatment sack includes a top sheet that defines a first outer perimeter. The hypothermic treatment sack further includes a bottom sheet that defines a second outer perimeter. The first outer perimeter of the top sheet is removably coupled to the second outer perimeter of the bottom sheet such that a patient receiving cavity is defined between the top sheet and the bottom sheet. The top sheet and the bottom sheet include a weather resistant external layer, a heat reflective interior layer, and an insulation layer. The insulation layer is disposed between the external layer and the heat reflective interior layer.

A system for delivering thermal therapy to a treated body portion of a subject. The system preferably includes a therapy compress having at least one pocket or retainer, and at least one self-heating element configured for removable insertion within the at least one pocket of the therapy compress. In some example embodiments the therapy compress is in the form of an eye mask having first and second eye-covering lobes, each eye-covering lobe having a pocket for receiving a self-heating element. In some example embodiments the at least one self-heating element is air or oxygen activated, for example including a zinc-based self-heating material.

A portable moist heat delivery system comprising a water vapor generating portion comprising a water vapor source and a heat source; a water vapor-air regulating portion, said water vapor-air regulating portion comprising a water vapor-air mixing layer, and a water vapor-air distribution layer; said water vapor generating portion and said water vapor-air regulating portion being in fluid communication; and said water vapor-air regulating portion having a latent heat delivery surface disposed adjacent said water vapor-air regulating portion which delivers moist heat at a preselected temperature range wherein about 15% to about 95% of the moist heat is latent heat of condensation. Methods include delivering improved pain relief, blood flow, relaxation, and reduced cardiac workload.

An energy harvesting, heat managing, multi-effect therapeutic garment, defining an inner surface and an outer surface, seamlessly knitted using a predetermined number of yarns is provided. The yarns for constructing the therapeutic garment are selected from a yarn that absorbs, stores, and releases heat energy through a phase change, yarns that convert heat energy and ultra violet radiation energy into far infrared radiation energy and radiate the far infrared radiation energy to other yarns and to a wearer's body part, a yarn that adsorbs moisture from the wearer's body part and/or ambient environment and generates heat energy through an exothermic reaction, a heat insulting and hydrophobic yarn, and a heat conductive yarn that maintains a uniform temperature within the yarns. The yarns of the therapeutic garment are bundled and knitted to create a uniform surface area distribution of the yarns that contact each other and cover the wearer's body part.

An energy harvesting, heat managing, multi-effect therapeutic garment, defining an inner surface and an outer surface, seamlessly knitted using a predetermined number of yarns is provided. The yarns for constructing the therapeutic garment are selected from a yarn that absorbs, stores, and releases heat energy through a phase change, yarns that convert heat energy and ultra violet radiation energy into far infrared radiation energy and radiate the far infrared radiation energy to other yarns and to a wearer's body part, a yarn that adsorbs moisture from the wearer's body part and/or ambient environment and generates heat energy through an exothermic reaction, a heat insulting and hydrophobic yarn, and a heat conductive yarn that maintains a uniform temperature within the yarns. The yarns of the therapeutic garment are bundled and knitted to create a uniform surface area distribution of the yarns that contact each other and cover the wearer's body part.