Transdermal electrotransport delivery device including a cathodic reservoir containing a compatible antimicrobial agent
First Claim
1. A transdermal electrotransport drug delivery device comprised of an anode, a cathode and a source of electrical power electrically connected to the anode and the cathode, the cathode including a cathodic electrode and a cathodic reservoir comprised of a housing composed of a polymeric material and an aqueous medium in contact with the housing, said aqueous medium comprised of i) a drug or an electrolyte salt or a mixture thereof and ii) a cetylpyridinium salt in an amount sufficient to inhibit microbial growth in the aqueous medium wherein said polymeric material is compatible with the cetylpyridinium salt.
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Abstract
A transdermal electrotransport drug delivery device having an anode, a cathode and a source of electrical power electrically connected to the anode and the cathode. The cathode includes a cathodic electrode and a cathodic reservoir comprised of a housing composed of a polymeric material and an aqueous medium in contact with the housing. The aqueous medium includes i) a drug or an electrolyte salt or a mixture thereof and ii) a cetylpyridinium salt in an amount sufficient to inhibit microbial growth in the aqueous medium. The polymeric material is compatible with the cetylpyridinium salt. A process is also provided wherein when electric current flows from the source of electrical power so that the drug is transdermally delivered to the patient by electrotransport from the anodic reservoir, the cetylpyridinium salt is not transdermally delivered to the patient by electrotransport from the cathodic reservoir. A process for preparing a transdermal electrotransport drug delivery device is also provided.
131 Citations
26 Claims
- 1. A transdermal electrotransport drug delivery device comprised of an anode, a cathode and a source of electrical power electrically connected to the anode and the cathode, the cathode including a cathodic electrode and a cathodic reservoir comprised of a housing composed of a polymeric material and an aqueous medium in contact with the housing, said aqueous medium comprised of i) a drug or an electrolyte salt or a mixture thereof and ii) a cetylpyridinium salt in an amount sufficient to inhibit microbial growth in the aqueous medium wherein said polymeric material is compatible with the cetylpyridinium salt.
- 15. A process for transdermally delivering a drug to a patient by electrotransport from a drug delivery device comprised of an anode, a cathode and a source of electrical power electrically connected to the anode and the cathode, the anode including an anodic electrode and an anodic reservoir that contains a drug and the cathode including a cathodic electrode and a cathodic reservoir composed of a polymeric material and containing an aqueous medium comprised of i) an electrolyte salt and ii) a cetylpyridinium salt in an amount sufficient to inhibit microbial growth in the aqueous medium, said polymeric material being compatible with the cetylpyridinium salt, said process comprising providing electric current from the source of electrical power so that the drug is transdermally delivered to the patient by electrotransport from the anodic reservoir and so that cetylpyridinium ions are not transdermally delivered to the patient by electrotransport from the cathodic reservoir.
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23. A process of preparing a transdermal electrotransport drug delivery device comprising preparing an aqueous medium comprised of i) a drug or an electrolyte salt or a mixture thereof and ii) a cetylpyridinium salt in an amount sufficient to inhibit microbial growth in the aqueous medium;
- and placing the aqueous medium in the cathodic reservoir of a device comprised of an anode, a cathode and a source of electrical power electrically connected to the anode and the cathode, the cathode including a cathodic electrode and a cathodic reservoir comprised of a housing composed of a polymeric material whereby the aqueous medium is in contact with the housing of the cathodic reservoir and wherein said polymeric material is selected so that it is compatible with the cetylpyridinium salt.
- View Dependent Claims (24, 25, 26)
Specification