摘要:
Rate controlled transdermal delivery devices are disclosed which utilize an in-line adhesive to maintain the device on the skin and deliver an agent which is a solvent or a plasticizer for the in-line adhesive. The initial equilibrated concentration of the agent in the agent reservoir and the adhesive is below saturation, and the reservoir comprises the agent dissolved in a solvent with respect to which the rate controlling element of the device is substantially impermeable. In preferred embodiments the initial loading of the agent in reservoir is sufficient to prevent the activity of the agent in the reservoir from decreasing by more than about 50% and preferably no more than about 25% during the predetermined period of administration: and the thicknesses of the adhesive, rate controlling membrane and reservoir layers are selected so that at least 50% and preferably at least 75% initial equilibrated agent loading is in the reservoir layer. The devices are usable to deliver agents which are liquid at body temperatures such as benztropine, secoverine, nicotine, arecoline, polyethylene glycol monolaurate, glycerol monolaurate, glycerol monooleate and ethanol, for example.
摘要:
Rate controlled transdermal delivery devices are disclosed which utilize an in-line adhesive to maintain the device on the skin and deliver an agent which is a solvent or a plasticizer for the in-line adhesive. The initial equilibrated concentration of the agent in the agent reservoir and the adhesive is below saturation, and the reservoir comprises the agent dissolved in a solvent with respect to which the rate controlling element of the device is substantially impermeable. In preferred embodiments the initial loading of the agent in reservoir is sufficient to prevent the activity of the agent in the reservoir from decreasing by more than about 50% and preferably no more than about 25% during the predetermined period of administration; and the thicknesses of the adhesive, rate controlling membrane and reservoir layers are selected so that at least 50% and preferably at least 75% initial equilibrated agent loading is in the reservoir layer. The devices are usable to deliver agents which are liquid at body temperatures such as benztropine, secoverine, nicotine, arecoline, polyethylene glycol monolaurate, glycerol monolaurate, glycerol monooleate and ethanol, for example.
摘要:
Rate controlled transdermal delivery devices are disclosed which utilize an in-line adhesive to maintain the device on the skin and deliver an agent which is a solvent or a plasticizer for the in-line adhesive. The initial equilibrated concentration of the agent in the agent reservoir and the adhesive is below saturation, and the reservoir comprises the agent dissolved in a solvent with respect to which the rate controlling element of the device is substantially impermeable. In preferred embodiments the initial loading of the agent in reservoir is sufficient to prevent the activity of the agent in the reservoir from decreasing by more than about 50% and preferably no more than about 25% during the predetermined period of administration; and the thicknesses of the adhesive, rate controlling membrane and reservoir layers are selected so that at least 50% and preferably at least 75% initial equilibrated agent loading is in the reservoir layer. The devices are usable to deliver agents which are liquid at body temperatures such as benztropine, secoverine, nicotine, arecoline, polyethylene glycol monolaurate, glycerol monolaurate, glycerol monooleate and ethanol, for example.
摘要:
Rate-controlled transdermal delivery devices are disclosed which utilize an in-line adhesive to maintain the device on the skin and deliver an agent which is a solvent for the in-line adhesive. The initial equilibrated concentration of the agent in the agent reservoir and the adhesive is below saturation and the reservoir comprises the agent dissolved in a solvent with respect to which the rate controlling element of the device is substantially impermeable. In preferred embodiments the initial loading of the agent in reservoir is sufficient to prevent the activity of the agent in the reservoir from decreasing by more than about 50% and preferrably no more than about 25% during the predetermined period of administration; and the thicknesses of the adhesive, rate controlling membrane and reservoir layers are selected so that at least 50% and, preferrably at least 75% initial equilibrated agent loading is in the reservoir layer. The devices are usable to delivery oily non-polar agents which are liquid at body temperatures such as benztropine and secoverine.
摘要:
A transdermal delivery system for the administering of ethinyl estradiol and levonorgestrel, in combination, utilizing a polymer matrix having the drug formulation along with a permeation enhancer dispersed throughout.
摘要:
Composition of matter for application to a body surface or membrane to administer pergolide by permeation through the body surface or membrane, the composition comprising pergolide to be administered, at a therapeutically effective rate, alone or in combination with a permeation enhancer or mixture. Also disclosed are drug delivery devices containing the pergolide or pergolide and enhancer composition and methods for the transdermal administration of the pergolide and pergolide/enhancer composition.
摘要:
A method for preventing the formation of crystalline hydrates in a dispersion of a hydratable liquid in a nonaqueous matrix is disclosed. The method is particularly useful in the manufacture of laminated items formed from such dispersions and comprises forming individual subunits from such dispersions, heating the subunits, preferably after they have been packed in sealed containers, to a temperature high enough to melt the crystalline hydrate, maintaining said subunits at such temperature for a time sufficient to melt all the crystalline hydrate present and to prevent the occurrence of crystals for an extended period of time after cooling and cooling subunits to ambient conditions. The use of the method in the manufacture of transdermal delivery devices for the delivery of scopolamine base is described.
摘要:
An improved process for manufacturing transdermal drug delivery devices and devices made therefrom. The invention provides a heat equilibration process for the manufacture of drug delivery devices which eliminates the need to preload the body contacting layer with a drug. The method has particular application in the manufacture of transdermal drug delivery devices including a drug reservoir comprising drug in excess of saturation.
摘要:
An improved process for manufacturing transdermal drug delivery devices and devices made therefrom. The invention provides a heat equilibration process for the manufacture of drug delivery devices which eliminates the need to preload the body contacting layer with a drug. The method has particular application in the manufacture of transdermal drug delivery devices including a drug reservoir comprising drug in excess of saturation.
摘要:
A composition suitable for transdermal electrotransport delivery of an agent through a body surface comprises a free acid/base form of an agent to be delivered by transdermal electrotransport, and a salt form of the agent, and optionally a permeation enhancer. Methods of enhancing transdermal electrotransport delivery and of forming a composition for the enhancement of transdermal electrotransport drug delivery, and a transdermal electrotransport delivery device (10) utilizing the compositions of the invention are disclosed.