Transdermal delivery system
DCFirst Claim
1. A transdermal delivery system (TDS) comprisinga self-adhesive matrix containing a self-adhesive polymer and microreservoirs containing an amine-functional drug in free base form selected from the group consisting of fentanyl and oxybutynin,wherein the microreservoirs are within the self-adhesive matrix and have a maximum diameter less than the thickness of the self-adhesive matrix;
- andwherein the self-adhesive matrix is permeable to the amine-functional drug in free base form, and the self-adhesive matrix is substantially impermeable to the amine functional drug in protonated form.
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Abstract
An improved transdermal delivery system (TDS) comprises a self-adhesive matrix comprising a solid or semi-solid semi-permeable polymer which contains an amine-functional drug in its free base form as a multitude of microreservoirs within the matrix. The self-adhesive matrix is highly permeable to the free base of the amine-functional drug and is impermeable to the protonated form of the amine-functional drug.
98 Citations
17 Claims
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1. A transdermal delivery system (TDS) comprising
a self-adhesive matrix containing a self-adhesive polymer and microreservoirs containing an amine-functional drug in free base form selected from the group consisting of fentanyl and oxybutynin, wherein the microreservoirs are within the self-adhesive matrix and have a maximum diameter less than the thickness of the self-adhesive matrix; - and
wherein the self-adhesive matrix is permeable to the amine-functional drug in free base form, and the self-adhesive matrix is substantially impermeable to the amine functional drug in protonated form. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A transdermal delivery system (TDS) comprising a self-adhesive matrix containing a self-adhesive polymer and microreservoirs containing an amine-functional drug in free base form selected from the group consisting of aminotetralin compounds,
wherein the microreservoirs are within the self-adhesive matrix and have a maximum diameter less than the thickness of the self-adhesive matrix; - and
wherein the self-adhesive matrix is permeable to the amine-functional drug in free base form, and the self-adhesive matrix is substantially impermeable to the amine functional drug in protonated form.
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Specification