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US 6,890,553 B1Granted
Exothermic topical delivery device
AssigneeJohnson & Johnson Consumer Companies, Inc.
InventorsYing Sun, Ralph W. Oakeson, Stephen J. Wisniewski, Jonas C. T. Wang
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Abstract
The present invention relates to an exothermic device for topically delivering an active agent comprising a liquid reservoir comprising water, a heating element comprising an oxidizable material, an oxygen-permeable outer-layer, an active agent, and a water-impermeable layer, wherein upon the rupturing of the liquid reservoir, the water contacts the heating element and the oxygen to create and exothermic reaction.
Claims19
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.
4 more elements
Dependencies are inferred from the claim text.