摘要:
Described is an article for the controlled release and delivery to animal tissue of a pharmacologically active agent with or without an excipient and/or enhances which may be a causative factor in the occurrence of non-allergic or allergic contact dermatitis comprising an anti-dermatitis substance.
摘要:
A unidirectional buccal delivery system for the delivery of therapeutic agents over an extended period of time. The delivery system includes a matrix for releasing the drug into the oral cavity at a sustained rate and a means for securing the matrix to the palate or other adequate regions in the oral cavity.
摘要:
Described is an article of manufacture useful for administration of pharmacologically-active substances, transdermally, orally or by means of subdermal implant comprising a solid vinyl plastisol layer for contacting a patient's tissue, internally or externally, the layer containing from about 20 up to about 70% by weight of a polyvinyl chloride resin or a polyvinyl chloride-polyvinyl acetate copolymer containing a minor proportion of vinyl acetate; from about 20-70% plasticizer composition; from about 0.5 up to 35% of a pharmacologically-active substance such as isosorbide dinitrate, nicotine, clonidine, guanfacine, indomethacin, glyceryl trinitrate and prostaglandin and optionally excipients. Also described is the novel plasticizer-polyvinyl chloride composition of matter comprising 1-dodecylhexahydro-2H-azepin-2-one and polyvinyl chloride resin taken together with a pharmacologically-active substance wherein the 1-dodecylhexahydro-2H-azepin-2-one not only acts as a plasticizer but also acts as a penetration enhancer (through tissue) for the pharmacologically-active substance.
摘要:
A device useful for administration of pharmacologically-active substances transdermally, orally, or by means of subdermal implant includes an impermeable backing layer, a plasticized polyvinyl chloride layer, and an adhesive layer, wherein the plasticized polyvinyl chloride layer includes from about 20 up to about 70% by weight of a polyvinyl chloride resin, from about 20 up to about 70% by weight of a plasticizer, and from about 0.5 up to about 35% by weight of a pharmacologically-active substance such as isosorbide dinitrate, nicotine, clonidine, guanfacine, indomethacin, nitroglycerin, and prostaglandin and optionally excipients.
摘要:
Described is a moisture-vapor-permeable and oxygen-permeable adhesive dressing for use in supplying a topical medicament to human skin in a controlled release manner, which dressing is unaffected by and impermeable to water in the liquid phase, which dressing when in use on human skin consists essentially of:(i) a polymeric backing material lamina having two surfaces, a first substantially planar surface and a second substantially planar surface;(ii) adhering to said first planar surface of said backing material a medication reservoir lamina having two surfaces, a first substantially planar surface and a second substantially planar surface, consisting essentially of an intimate mixture of:(a) a polyvinyl chloride polymer;(b) a polymeric plasticizer intimately admixed with said polyvinyl chloride and compatible with said polyvinyl chloride; and(c) a topical medicament compatible with said polyvinyl chloride and said plasticizer;said first substantially planar surface of said medication reservoir lamina adhering to said first substantially planar surface of said backing material in a continuous or discontinuous manner; and(iii) adhering to said second substantially planar surface of said medication reservoir lamina, a pressure-sensitive adhesive which is permeable to oxygen and moisture vapor but is unaffected by liquid water.
摘要:
Described is an article of manufacture useful for administration of pharmacologically-active substances, transdermally, orally or by means of subdermal implant comprising a solid vinyl plastisol layer for contacting a patient's tissue, internally or externally, the layer containing from about 20 up to about 70% by weight of a polyvinyl chloride resin or a polyvinyl chloride-polyvinyl acetate copolymer containing a minor proportion of vinyl acetate; from about 20-70% plasticizer composition; from abotu 0.5 up to 35% of pharmacologically-active substance such as isosorbide dinitrate, nicotine, clonidine, guanfacine, indomethacin, glyceryl trinitrate and prostaglandin and optionally excipients. Also described is the novel plasticizer-polyvinyl chloride composition of matter comprising 1-dodecylhexahydro-2H-azepin-2-one and polyvinyl chloride resin taken together with a pharmacologically-active substance whereint he 1-dodecylhexahydro-2H-azepin-2-one not only acts as a plasticizer but also acts as a penetration enhancer (through tissue) for the pharmacologically-active substance.
摘要:
In accordance with the present invention novel polyurethane PSAs containing water soluble polymer additives have enhanced water uptake. The water soluble polymer additives suitable for use herein have a solubility parameter in poorly hydrogen-binding solvents (e.g., hexane, cyclohexane and the like) in the range of from 8-10. The water soluble polymers must also be free from moieties which will react with isocyanates. Such PSAs retain their transparency and peel strength characteristics and can still be employed as relatively thin films (i.e., 2 to 100 mils) while exhibiting only minimal swelling when in contact with moist environments.
摘要:
A polymeric device for the controlled release of active agents contained in the device in which the polymer has a glass transition temperature greater than the normal storage or non use temperature of the device. When heated to or above the glass transition temperature of the polymer, the active agent is released. The release of active agent can be switched on or off by the adjustment of the temperature of the polymeric device above or below the glass transition temperature of the polymer.
摘要:
A composite material for wound dressings having a fibrous wound-contacting substrate, such as cotton gauze, impregnated with a thermoplastic hydrogel forming polymer and methods of making the same.
摘要:
Described is an article of manufacture useful for administration of pharmacologically-active substances, transdermally, orally or by means of subdermal implant comprising a solid vinyl plastisol layer for contacting a patient's tissue, internally or externally, the layer containing from about 20 up to about 70% by weight of a polyvinyl chloride resin or a polyvinyl chloride-polyvinyl acetate copolymer containing a minor proportion of vinyl acetate; from about 20-70% plasticizer composition, from about 0.5 up to 35% of pharmacologically-active substance such as isosorbide dinitrate, nicotine, clonidine, guanfacine, indomethacin, glyceryl trinitrate and prostaglandin and optionally excipients. Also described is the novel plasticizer-polyvinyl chloride composition of matter comprising 1-dodecylhexahydro-2H-azepin-2-one and polyvinyl chloride resin taken together with a pharmacologically-active substance .[.whereint he.]. .Iadd.wherein the .Iaddend.1-dodecylhexahydro-2H-azepin-2-one not only acts as a plasticizer but also acts as a penetration enhancer (through tissue) for the pharmacologically-active substance.