Iontophoresis device
First Claim
1. An iontophoresis device having a working electrode structure, said working electrode structure comprising:
- a first electrode;
a biological interface contact member including a substrate having a front surface and a rear surface, and a plurality of needles that protrude from the front surface of the substrate and which can be inserted into a biological interface, the needles including an ion exchange material that allows selective permeation of ions of a first polarity and substantially prevents permeation of ions of a second polarity, opposite to the first polarity; and
a drug holding part to hold a drug solution containing drug ions of the first polarity, the drug holding part interposed between the first electrode and the biological interface contact member, wherein the drug ions are driven through the ion exchange material of the needles from the drug holding part in response to an electrical potential applied via the first electrode.
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Accused Products
Abstract
An iontophoresis device includes: a first electrode; a biological interface contact member including a substrate having a front surface and a rear surface, and a plurality of needles that protrude from the front surface of the substrate and can be inserted into a biological interface, the biological interface contact member allowing selective permeation of ions of a first polarity; and a drug holding part applied with an electrical potential or voltage through the first electrode and holding a drug solution containing drug ions charged in the first polarity, the drug holding part being interposed between the first electrode and the biological interface contact member.
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Citations
10 Claims
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1. An iontophoresis device having a working electrode structure, said working electrode structure comprising:
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a first electrode; a biological interface contact member including a substrate having a front surface and a rear surface, and a plurality of needles that protrude from the front surface of the substrate and which can be inserted into a biological interface, the needles including an ion exchange material that allows selective permeation of ions of a first polarity and substantially prevents permeation of ions of a second polarity, opposite to the first polarity; and a drug holding part to hold a drug solution containing drug ions of the first polarity, the drug holding part interposed between the first electrode and the biological interface contact member, wherein the drug ions are driven through the ion exchange material of the needles from the drug holding part in response to an electrical potential applied via the first electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification