METHOD AND SYSTEM FOR MITIGATING CURRENT CONCENTRATION IN ELECTROKINETIC DRUG DELIVERY
First Claim
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1. An electrokinetic apparatus to apply medicament to a treatment site of a mammalian user, the apparatus comprising:
- a segmented active electrode;
a medicament matrix having one side abutting the segmented active electrode and another side adapted to contact a surface of skin over the treatment site, wherein the apparatus includes at least one current direction control element suppressing transverse current flow through the matrix.
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Abstract
An electrokinetic apparatus to apply medicament to a treatment site of a mammalian user, the apparatus including: a segmented active electrode; a medicament matrix having one side abutting the segmented active electrode and another side adapted to contact a surface of skin over the treatment site, wherein the matrix includes at least one current direction barrier suppressing transverse current flow through the matrix.
63 Citations
48 Claims
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1. An electrokinetic apparatus to apply medicament to a treatment site of a mammalian user, the apparatus comprising:
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a segmented active electrode; a medicament matrix having one side abutting the segmented active electrode and another side adapted to contact a surface of skin over the treatment site, wherein the apparatus includes at least one current direction control element suppressing transverse current flow through the matrix. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method to electrokinetically deliver a medicament to a treatment site in a mammalian user, the method comprising:
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applying a first surface of a medicament matrix to a surface on the user; applying a segmented first electrode to a second surface of the medicament matrix; applying electrical current to an electrical current path extending through the first electrode segments, medicament matrix, at least partially through the user and to a second electrode; delivering medicament from the matrix into the nail by electrokinetic transporting the medicament along the current path, and blocking transverse current from one electrode segment of the first electrode to the surface on the user not aligned with the one electrode segment. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An electrokinetic apparatus to apply medicament to a treatment site of a mammalian user, the apparatus comprising:
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an active electrode including first and second active electrode segments; a counter electrode including first and second counter electrode segments; a medicament matrix having one side abutting the segments of the active electrode and another side adapted to contact a surface of the user over the treatment site, wherein the matrix includes at least one current direction barrier suppressing transverse current flow through the matrix; a first electrical circuit including the first active electrode segment and the first counter electrode segment, and a second electrical circuit including the second active electrode segment and the second counter electrode segment, wherein the first electrical circuit is electrically isolated from the second electrical circuit. - View Dependent Claims (18, 19, 20)
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21. An applicator panel for an electrokinetic delivery system comprising:
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an array of electrodes arranged on a flexible substrate and conductive pathways between each of the electrodes and a connector to receive a connection to a electronic control and power source circuit, wherein each electrode includes a center active electrode region and an outer return electrode region proximate to the active electrode region, and at least one layer having a pattern of medicament cells and network of ribs between the cells, wherein the non-woven layer has a back surface laminated to the array of electrodes and the cells are each aligned with a respective one of the electrodes. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. An applicator for an electrokinetic delivery system comprising:
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an array of electrodes arranged on a substrate and conductive pathways between each of the electrodes and a connector to receive a connection to a electronic control and power source circuit, wherein the electrodes are arranged in at least a first commonly connected group of electrodes and a second commonly connected group of electrodes; a first medicament layer having a pattern of first medicament cells, wherein the first medicament cells are aligned with the electrodes of the first commonly connected group of electrodes; a second medicament layer having a pattern of second medicament cells, wherein the second medicament cells are aligned with the electrodes of the second commonly connected group of electrodes, and an electronic controller controlling the electrokinetic delivery to a treatment site of a patient and underlying the first and second medicament layers, wherein medicament in the first medicament layer is delivered by electrically actuating the first commonly connected group of electrodes and medicament in the second medicament layer is delivered by electrically actuating the second commonly connected group of electrodes. - View Dependent Claims (31, 32)
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33. An applicator panel for an electrokinetic delivery system comprising:
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an array of electrodes arranged on a flexible substrate and conductive pathways between each of the electrodes and a connector to receive a connection to a electronic control and power source circuit; at least one non-woven layer having a pattern of medicament cells and ribs between the cells, wherein the cells are aligned with electrodes of the array; an adhesive matrix where the adhesive is aligned with the ribs, wherein the non-woven layer is sandwiched between the array of electrodes and the adhesive matrix. - View Dependent Claims (34, 35, 36, 37)
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38. A method to form an applicator panel for an electrokinetic delivery system comprising:
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embossing a pattern of medicament cells and ridges on a non-woven layer; infusing a medicament into the medicament cells; forming an electrode layer by applying an array of electrodes on a front side of an electrode layer substrate and forming an electrical distribution circuit on a back side of the electrode layer substrate, and securing the front side of the electrode layer substrate to a back side of the non-woven layer, wherein the electrodes are aligned with the medicament cells. - View Dependent Claims (39)
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40. An array of electrodes in an applicator panel for an electrokinetic delivery system including a medicament layer having an array of medicament cells, each of the electrodes comprising:
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a center electrode region aligned with one of the medicament cells; a non-conductive region surrounding the center electrode, and a neutral return electrode region encircling the annular adhesive seal. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48)
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Specification