Transdermal drug delivery device with multiple reservoirs
First Claim
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1. An iontophoretic device comprising in combination:
- an insulating member having an inner surface positionable adjacent skin of a recipient,a plurality of reservoirs formed in the insulating member, each reservoir including an opening in the inner surface and adapted to contain an ionic drug and terminating in a rim formed at the opening in the inner surface,an outer electrode positioned on the insulating member to be in contact with the drug when the drug is in said reservoirs,a single continuous inner electrode on the inner surface and surrounding each said reservoir and spaced from the rim of each said reservoir to define a gap between the rim and the inner electrode, andmeans for the electrodes being connectable to a field generating means for energizing the electrodes to draw the drug into the skin of the recipient.
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Abstract
An iontophoretic device is taught which is positionable on skin of a recipient. An insulating member includes therethrough at least one reservoir containing a drug between outer and inner (recipientwise) electrodes adhered to surfaces of the insulating member. The inner electrode preferably is spaced from a rim of the drug reservoir by the same distance as the depth and width of the reservoir. The electrodes are connected to field generating means which draw the ionic drug into the patient and outward from the rim of the reservoir.
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Citations
9 Claims
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1. An iontophoretic device comprising in combination:
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an insulating member having an inner surface positionable adjacent skin of a recipient, a plurality of reservoirs formed in the insulating member, each reservoir including an opening in the inner surface and adapted to contain an ionic drug and terminating in a rim formed at the opening in the inner surface, an outer electrode positioned on the insulating member to be in contact with the drug when the drug is in said reservoirs, a single continuous inner electrode on the inner surface and surrounding each said reservoir and spaced from the rim of each said reservoir to define a gap between the rim and the inner electrode, and means for the electrodes being connectable to a field generating means for energizing the electrodes to draw the drug into the skin of the recipient. - View Dependent Claims (2)
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3. An iontopheric device comprising in combination:
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an insulating member having an inner surface positionable adjacent skin or a recipient; a plurality of reservoirs formed in the insulating member, each reservoir including an opening at the inner surface and adapted to contain a drug and terminating in a rim formed at the opening in the inner surface, an outer electrode positioned on the insulating member to be in contact with the drug when the drug is in the reservoirs, each reservoir having a predetermined depth measured from the outer electrode to the inner surface, a single continuous inner electrode on the inner surface and surrounding each said reservoir and spaced from the rim of each said reservoir to define a gap between the rim and the inner electrode, each gap having a width substantially equal to the depth, and means for the electrodes being connectable to field generating means or energizing the electrodes to draw the drug into the skin of the recipient. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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Specification