摘要:
Rate controlled transdermal nicotine delivery systems are disclosed which utilize an in-line adhesive to maintain the systems on the skin. The initial equilibrated concentration of nicotine in the nicotine reservoir and the adhesive is below saturation, preferably at a thermodynamic activity no greater than 0.50, and the reservoir comprises the nicotine dissolved in a material with respect to which the rate controlling element of the device is substantially impermeable. In preferred embodiments the initial loading of nicotine in the reservoir is sufficient to prevent the activity of the nicotine in the reservoir from decreasing by more than about 75% and preferably no more than about 25% during the predetermined period of administration; and the thickness of the adhesive, rate controlling membrane and reservoir layers are selected so that at least 50% and, preferably at least 75% of the initial equilibrated nicotine loading is in the reservoir layer.
摘要:
The present invention provides compositions and methods for the transdermal administration of a therapeutically effective amount of a synthetic 19-nor-progesterone (ST-1435) together with, optionally, a suitable permeation enhancer.
摘要:
A diffusional drug delivery device is described which can provide for delayed onset of therapeutic effect and for delivery of the therapeutic agent in predetermined temporal patterns at optimum rates. Delay means are provided between the agent reservoir and the surface through which the agent is released by diffusion to delay the release of agent at a therapeutic rate for predetermined times after application. Suitable means include a delay membrane disposed between the releasing surface and the agent reservoir, which membrane is preferably free of undissolved agent and/or is initially impermeable to the agent and thereafter becomes permeable. One or more agent chambers defined by one or more of such membranes may be provided, whereby agents are released in predetermined temporal patterns at optimal release rates. Delayed permeability enables programmed washout periods to be obtained from the sequential and concurrent application of devices for the administration of drugs, such as nitrates, to which patients may develop a tolerance on continuous administration over extended time periods.
摘要:
A method for enhancing the transdermal flux of a transdermally deliverable drug through intact skin is described in which the drug is delivered simultaneously with sucrose monolaurate or a mixture of sucrose esters of coconut fatty acids, which is predominantly sucrose monolaurate. Preferred embodiments of therapeutic systems for delivering the drug and the sucrose ester employ a matrix containing drug at a concentration above saturation.
摘要:
A method for enhancing the transdermal flux of a transdermally deliverable drug through intact skin is described in which the drug is delivered simultaneously with sucrose monolaurate or a mixture of sucrose esters of coconut fatty acids, which is predominatly sucrose monolaurate. Preferred embodiments of therapeutic systems for delivering the drug and the sucrose ester employ a matrix containing drug at a concentration above saturation.
摘要:
A method is disclosed for treating an ischemic condition. The method comprises coadministering topically and internally a vasodilator to a patient having the condition for treating the condition.
摘要:
A medical device for the transdermal delivery of highly ionized, fat insoluble drugs comprises an aqueous drug reservoir having a physiological pH, said reservoir preferably being a gel maintained in an impermeable receptacle by a highly permeable support member disposed between the gel and a permeable contact adhesive. A permeation enhancer reservoir delivers a permeation enhancer to the skin through the aqueous reservoir and through a permeation enhancer release rate controlling membrane which is permeable to the permeation enhancer and impermeable to the drug and water. In a preferred embodiment the permeation enhancer release rate controlling membrane forms at least a portion of said receptacle.
摘要:
A patient-care apparatus is disclosed for providing a biocide for controlling the presence of unwanted pathogens in a liquid. The patient-care apparatus comprises a container having means for maintaining a biocide dispensing device in a position in the container such that it dispenses an amount of biocide relative to the amount of liquid present in the container.