Indicator for electrophoretic transcutaneous drug delivery device
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United States of America Patent
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-
Nov 11, 1986
Issued Date -
N/A
app pub date -
Oct 12, 1984
filing date -
Aug 18, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An indicator for indicating the in vivo delivery of a drug by the electrophoretic deposition of a medicament through or on a skin surface. The device includes layers forming a reservoir containing the drug, a battery layer superimposed on the reservoir, and a cover of electrically conductive material fully enclosing the layers and having a lip along its periphery to electro-conductively engage the skin surface and form an electrical circuit. An indicator, such as an LCD or an electrochemically phototropic material (ECM) is in the circuit during which closing of the circuit, the current causes delivery of the drug and activates the LCD or ECM so as to indicate delivery to the user.
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