초록 ▼

An iontophoretic drug delivery system of the present invention includes a disposable patch electrically interconnectible with a controller. The patch includes at least two electrode assemblies, with one of the electrode assemblies having a first electrode and a second electrode. In this way, during

An iontophoretic drug delivery system of the present invention includes a disposable patch electrically interconnectible with a controller. The patch includes at least two electrode assemblies, with one of the electrode assemblies having a first electrode and a second electrode. In this way, during delivery of electrical current one of the electrodes is exhausted so that upon an attempt to reuse the patch, the controller does not detect the delivery of electrical current through said electrodes and fails to supply electrical current to the electrode assemblies for delivery of the drug. Electrical interconnection between the patch and the controller is established by inserting a tab extending from the patch into the controller.

대표청구항 ▼

[ What is claimed is:] [1.] A disposable patch for use in combination with a controller to form an operable iontophoretic drug delivery system, said disposable patch comprising:a planar body portion including at least a first electrode assembly and a second electrode assembly, with each electrode as

[ What is claimed is:] [1.] A disposable patch for use in combination with a controller to form an operable iontophoretic drug delivery system, said disposable patch comprising:a planar body portion including at least a first electrode assembly and a second electrode assembly, with each electrode assembly including at least one electrode; andmeans contained in one of said electrode assemblies for preventing reuse of a patch when interconnected with a controller, said means including a counter electrode adjacent to said electrode and in electrical communication with said electrode, and said electrode and said counter electrode being in contact with and adjacent to a reservoir;said counter electrode including a material which upon electrical current flowing through said electrode and said counter electrode is consumed in a limited period of time so that upon depletion of the consumable material, current will no longer flow through said electrode and said counter electrode, whereby after electrical current has initially flowed through said electrode between said electrode and said counter electrode for a preselected period of time sufficient to exceed the amount of time necessary to deplete the consumable material of said counter electrode, electrical current is supplied to said first electrode assembly and said second electrode assembly to deliver the drug to the patient.