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US 7,622,136 B2Granted
Transparent transdermal nicotine delivery devices
AssigneeAlza Corporation
InventorRobert M. Gale
Life of this patent
Estimating the term…
Abstract
A transparent transdermal delivery device for delivering nicotine which has an Opacity Index of less than 48.6%.
Claims12
A method for making a device for transdermal administration on skin, comprising:
- providing a backing made from a material selected from the group consisting of PET/EVA laminate, HDPE/EAA/nylon/EAA multilaminate, and film comprising a graft copolymer formed from 73-77% acrylonitrile and 23-27% methyl acrylate copolymerized in the presence of 8 to 10 parts by weight of butadiene/acrylonitrile copolymers;
- forming a transdermal device with the backing and a nicotine-containing drug reservoir with adhesive for maintaining the device in nicotine transmitting relationship with the skin, such that the device comprising the backing, and the drug reservoir with the adhesive as applied to the skin has a device Opacity Index of less than 48.6% to permit the skin to be visible through the device, wherein the device can be used for 18-24 hour nicotine delivery.
A method for making a device for transdermal administration on skin, comprising:
- providing a backing having transparency made from a material selected from the group consisting of PET/EVA laminate, HDPE/EAA/nylon/EAA multilaminate, and film comprising a graft copolymer formed from acrylonitrile and methyl acrylate copolymerized in the presence of butadiene/acrylonitrile copolymers;
- forming a transdermal device with the backing, a nicotine-containing drug reservoir, and adhesive for maintaining the device in nicotine transmitting relationship with the skin, such that the device comprising the backing, drug reservoir, and adhesive as applicable to the skin has a device Opacity Index of less than 48.6% to permit the skin to be visible through the device, wherein the device can be used for 18-24 hour nicotine delivery.
Dependencies are inferred from the claim text.