Therapeutic system for administering drugs to the skin
Patent 4286592 Issued on September 1, 1981. Estimated Expiration Date: 
February 4, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 4, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3598122 3797494 Method and therapeutic system for providing chemotherapy transdermally Transdermal delivery of drugs Two-membrane medicated device for rate-controlled administration of prostaglandins Patent #: 4237888 InventorAssigneeApplicationNo. 06/117846 filed on 02/04/1980US Classes:424/448, Pressure sensitive adhesive means424/449, Transdermal or percutaneous604/307, Adhesively attachable to body604/308Bandage, pad, shield, or attaching means extendable around body portionExaminersPrimary: Rosenbaum, C. FredAttorney, Agent or FirmInternational ClassesA61F 13/02 (20060101)A61F 13/00 (20060101) A61K 9/70 (20060101) A61F 13/15 (20060101) A61K 9/00 (20060101) AbstractA bandage for administering drugs to the skin that consists of an impermeable backing layer, a drug reservoir layer composed of drug and a carrier, and a contact adhesive layer by which the bandage is adhered to the skin. The contact adhesive layer controls the rate at which drug is administered and maintains that rate at an approximately constant level by virtue of there being a particular correlation between the solubility of the drug in the carrier and in the contact adhesive, the diffusion coefficient of the drug in the carrier and in the contact adhesive, the concentration of drug in the reservoir, and the thickness of the contact adhesive layer. | |
