Iontopheretic delivery device
First Claim
1. An electrically powered iontophoretic agent delivery device including a donor electrode assembly, a counter electrode assembly and a source of electrical power electrically connected to the donor electrode assembly and the counter electrode assembly, the donor electrode assembly comprising:
- a) an agent reservoir containing an agent, the agent reservoir adapted to be placed in agent transmitting relation with a body surface; and
b) a donor electrode electrically connected to the source of electrical power, the donor electrode having a surface which is in contact with the agent reservoir;
wherein the agent reservoir is comprised of about 10 to 60 wt. % of a hydrophilic polymer, about 10 to about 60 wt. % of a solid hydrophobic polymer which is heat fusible and up to about 50% of the agent.
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Accused Products
Abstract
An iontophoretic agent delivery device having donor and counter electrodes comprised of either metal or a hydrophobic polymer loaded with a conductive filler is provided. The agent reservoir in the donor electrode assembly contains about 10 to 60 wt % hydrophobic polymer, about 10 to 60 wt % hydrophilic polymer, and up to 50% agent. Similarly, the electrolyte reservoir contains about 10 to 60 wt % hydrophobic polymer, about 10 to 60 wt % hydrophilic polymer, and up to 50% electrolyte. The agent reservoir, the electrolyte reservoir and the electrodes are preferably in the form of films which are laminated to one another. The hydrophobic polymer component in the agent/electrolyte reservoir prevents the reservoir from delaminating from the metal/hydrophobic polymer based electrode, even after hydration of the reservoirs.
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Citations
22 Claims
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1. An electrically powered iontophoretic agent delivery device including a donor electrode assembly, a counter electrode assembly and a source of electrical power electrically connected to the donor electrode assembly and the counter electrode assembly, the donor electrode assembly comprising:
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a) an agent reservoir containing an agent, the agent reservoir adapted to be placed in agent transmitting relation with a body surface; and b) a donor electrode electrically connected to the source of electrical power, the donor electrode having a surface which is in contact with the agent reservoir; wherein the agent reservoir is comprised of about 10 to 60 wt. % of a hydrophilic polymer, about 10 to about 60 wt. % of a solid hydrophobic polymer which is heat fusible and up to about 50% of the agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification