Indicator for iontophoresis system
First Claim
1. Iontophoresis apparatus that provides an indication of the cumulative amount of a therapeutic agent delivered through a body surface of a patient, the apparatus comprising:
- a first electrode assembly containing a therapeutic agent to be delivered and adapted to be placed in agent transmitting relation with a body surface of a patient;
a second electrode assembly, adapted to be placed in ion transmitting relation with the body surface at a location spaced apart from the first electrode assembly;
an electrical current source, electrically connected to the first and second electrode assemblies;
a means for measuring the cumulative amount of electrical charge transferred during operation of the apparatus over a given time period which cumulative charge transferred is a measurement of cumulative amount of agent delivered; and
means for displaying a visually perceptible output of the cumulative amount of agent delivered, said display means being electrically connected in parallel with the current source.
0 Assignments
0 Petitions
Accused Products
Abstract
Apparatus (11) for delivery of a medicament, drug or other therapeutic agent transdermally to a body by iontophoresis is provided. The apparatus (11) provides a means (13) for measuring and displaying the cumulative amount of the medicament delivered to the body by monitoring the amount of a metal, initially present at the anode (45), that is transferred to the cathode (41) in a subsidiary electrolyte cell (47) through which the drive current for the apparatus (11) passes. Optionally, the apparatus also provides a plurality of light emitting devices (63-1) that display a measure of the cumulative amount of medicament delivered, by use of visually distinguishable light colors or by use of binary encoding in the light display.
-
Citations
33 Claims
-
1. Iontophoresis apparatus that provides an indication of the cumulative amount of a therapeutic agent delivered through a body surface of a patient, the apparatus comprising:
-
a first electrode assembly containing a therapeutic agent to be delivered and adapted to be placed in agent transmitting relation with a body surface of a patient; a second electrode assembly, adapted to be placed in ion transmitting relation with the body surface at a location spaced apart from the first electrode assembly; an electrical current source, electrically connected to the first and second electrode assemblies; a means for measuring the cumulative amount of electrical charge transferred during operation of the apparatus over a given time period which cumulative charge transferred is a measurement of cumulative amount of agent delivered; and means for displaying a visually perceptible output of the cumulative amount of agent delivered, said display means being electrically connected in parallel with the current source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
-
Specification