Patent ID: 6890553
Filing Date: 2005-05-10
Classification: A61B,A61F

Abstract:
1. An exothermic device for topically delivering an active agent, said device comprising: (a) a plurality of liquid reservoirs, wherein said reservoirs are capsules comprising water; (b) a heating element, said heating element comprising an oxidizable material and where said heating element is in communication with said liquid reservoir; (c) an oxygen-permeable outer-layer, wherein said oxygen-permeable layer is in communication with said heating element, permits oxygen from the environment to contact said heating clement, and substantially inhibits the permeation of water from the heating element into the environment; (d) an active agent; and (e) a water-impermeable layer, wherein said water-impermeable layer separates said heating element and said active agent; wherein upon the rupturing of said liquid reservoir, said water contacts said heating element and said oxygen to create an exothermic reaction.