Method and apparatus for controlled environment electrotransport
First Claim
1. A method of conducting electrotransport comprising the steps of:
- (a) selectively operating a primary electrode arrangement to provide electromotive force to transport ions from an active electrode reservoir; and
,(b) selectively operating a secondary electrode arrangement such that the effect of the electrochemical reactions generated by the secondary electrode arrangement on the ionic content of the active electrode reservoir is different from that of the primary electrode arrangement, to selectively effect relative concentrations of ions in the active electrode reservoir.
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Accused Products
Abstract
Methods for conducting controlled environment electrotransport are described. The methods generally concern control of the ionic environment of the active electrode reservoir, in an electrotransport system. This control may be utilized, for example, to maintain a constant extraneous ion presence, such as pH. It may also be applied in a preferred manner to maintain selected control over the delivery rate of a target species, in time, in the presence of extraneous ions. Apparatus usable to provide for controlled environment electrotransport are also described. In general the apparatus comprises an electrotransport system including an active electrode reservoir having therein both a primary electrode arrangement and a secondary electrode arrangement, with a control arrangement for selected operation of both. The secondary electrode arrangement, being operated different from the primary electrode arrangement, is selected for operation to selectively enhance or otherwise modify ion presence in the active electrode reservoir, to achieve application of the general methods described. The apparatus may include a sensor means therein, for use as feedback to a control system during operation. Methods and systems involving diffusion type delivery are also described.
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Citations
10 Claims
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1. A method of conducting electrotransport comprising the steps of:
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(a) selectively operating a primary electrode arrangement to provide electromotive force to transport ions from an active electrode reservoir; and
,(b) selectively operating a secondary electrode arrangement such that the effect of the electrochemical reactions generated by the secondary electrode arrangement on the ionic content of the active electrode reservoir is different from that of the primary electrode arrangement, to selectively effect relative concentrations of ions in the active electrode reservoir. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification