Device for controlled release of vaporous medications through nasal route
First Claim
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1. A device useful for the controlled release of therapeutic agents to the nasal cavity and respiratory airway of patients, said device forming a laminate comprising:
- a diffusion rate limiting membrane layer comprising a polymer selected from the group consisting of nonporous polymeric membranes and microporous polymeric membranes having a pore size of form about 0.02 microns to about 0.6 microns;
a reservoir layer adjacent said diffusion rate limiting membrane layer, said reservoir layer comprising one or more therapeutic agents incorporated in a polymer, said therapeutic agent selected from the group of vapor emitting compounds or aerosols consisting of antihistamines, bronchodilators, decongestants, mucolytics, anti-tussives, anti-inflammatory steroids, anti-virals, peptides and hormones;
a vapor and liquid impermeable backing layer adjacent said reservoir layer; and
a pressure sensitive contact adhesive layer adjacent said vapor and liquid impermeable backing layer, said adhesive layer comprising a biocompatible, hypoallergenic pressure sensitive adhesive.
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Abstract
A controlled release device useful for the release of vapors or liquids to the surrounding of the user is described. The device is a multilayered laminate consisting of a reservoir layer which incorporates an active compound, such as a nasally delivered therapeutic medication or insect repellant, an impermeable membrane layer adjacent the reservoir layer and a diffusion rate limiting membrane layer adjacent the reservoir layer. The device preferably includes an adhesive layer for adhering the device to skin or a surface and an ornamental decorative layer.
222 Citations
8 Claims
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1. A device useful for the controlled release of therapeutic agents to the nasal cavity and respiratory airway of patients, said device forming a laminate comprising:
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a diffusion rate limiting membrane layer comprising a polymer selected from the group consisting of nonporous polymeric membranes and microporous polymeric membranes having a pore size of form about 0.02 microns to about 0.6 microns; a reservoir layer adjacent said diffusion rate limiting membrane layer, said reservoir layer comprising one or more therapeutic agents incorporated in a polymer, said therapeutic agent selected from the group of vapor emitting compounds or aerosols consisting of antihistamines, bronchodilators, decongestants, mucolytics, anti-tussives, anti-inflammatory steroids, anti-virals, peptides and hormones; a vapor and liquid impermeable backing layer adjacent said reservoir layer; and a pressure sensitive contact adhesive layer adjacent said vapor and liquid impermeable backing layer, said adhesive layer comprising a biocompatible, hypoallergenic pressure sensitive adhesive. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification