초록 ▼

An iontophoresis electrode (10) is disclosed including a backing layer (22) formed of PVC or similar material including plasticizers providing softness and conformability and a conductive layer (18) formed of carbon or similar polymer material having electrical characteristics which are negatively a

An iontophoresis electrode (10) is disclosed including a backing layer (22) formed of PVC or similar material including plasticizers providing softness and conformability and a conductive layer (18) formed of carbon or similar polymer material having electrical characteristics which are negatively affected with the migration of the plasticizers. A barrier layer (26) is provided to prevent the undesired migration of plasticizers from the backing layer (22) into the conductive layer (18). In one preferred form, the barrier layer (26) is a sacrificial layer, such as of identical construction as the conductive layer (18), for acceptance of the migration of the plasticizers. In another form, the barrier layer (26) is an impermeable layer formed of material in which the plasticizer is immiscible so as to prevent the migration of the plasticizers.

대표청구항 ▼

[ What is claimed is:] [1.]1. A iontophoresis electrode for use in applying medicaments to the human body, comprising, in combination:a conductive layer having electrical characteristics and adapted to be attachable to an electrical power source;a barrier layer juxtaposed to the conductive layer;a b

[ What is claimed is:] [1.]1. A iontophoresis electrode for use in applying medicaments to the human body, comprising, in combination:a conductive layer having electrical characteristics and adapted to be attachable to an electrical power source;a barrier layer juxtaposed to the conductive layer;a backing layer juxtaposed with the barrier layer on a side opposite the conductive layer, with the backing layer being fabricated from a material including plasticizers providing softness and conformability, with the conductive layer being formed of material into which the plasticizers can migrate altering the electrical characteristics; anda drug reservoir juxtaposed with the conductive layer on a side opposite the barrier layer, wherein the barrier layer prevents the undesired migration of plasticizers from the backing layer into the conductive layer, thus maintaining the electrical characteristics of the conductive layer.