On-demand agent dispensing devices and related methods

An on-demand liquid or gelatinous agent dispensing patch, comprising:

• at least one reservoir layer that is configured to absorb a liquid or gelatinous agent therein;
• at least one dispenser layer overlying the at least one reservoir layer in a thickness direction comprising a plurality of solid portions and an array of a plurality of openings extending through a thickness thereof, the at least one dispenser layer configured to inhibit evaporation of the liquid or gelatinous agent, and control a flow of the agent from the at least one reservoir layer upon the compression of the patch in the thickness direction, when the liquid or gelatinous agent is absorbed in the at least one reservoir layer;
• at least one release control layer underlying the at least one reservoir layer in the thickness direction, the at least one release control layer comprising at least one opening extending through a thickness thereof;
• at least one backer layer underlying the at least one release control layer in the thickness direction, the at least one backer layer being substantially impervious to the liquid or gelatinous agent;
• a manually breakable container contained within the flexible patch between the at least one release control layer and the at least one backer layer in the thickness direction, the manually breakable container containing a volume of the liquid or gelatinous agent sealed therein and being substantially impervious to the liquid or gelatinous agent;
• and
• an adhesive layer configured to removably couple the patch to a surface underlying the at least one backer layer in the thickness direction,
• wherein the solid portions of the at least one dispenser layer and portions of the at least one reservoir layer underlying the plurality of openings of the at least one dispenser layer define an outer face of the patch,
• wherein the at least one reservoir layer is void of the liquid or gelatinous agent absorbed therein, and
• wherein the at least one reservoir layer is configured to absorb the liquid or gelatinous agent when the manually breakable container is broken, and the at least one reservoir layer and the at least one dispenser layer are configured to provide on-demand dispensing of the liquid or gelatinous agent via compression of the patch in the thickness direction when the liquid or gelatinous agent is absorbed in the at least one reservoir layer.