Failsafe iontophoresis drug delivery system

Details Failsafe iontophoresis drug delivery system Failsafe iontophoresis drug delivery system

1992-09-30

1994-04-26

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Infrared, visible light, ultraviolet, x-ray or electrical...

607149, A61N 130

Patent

active

053062353

ABSTRACT:
An iontophoresis system includes an iontophoretic drug delivery device for placement against the skin of a patient and having a pair of electrodes, and a circuit for delivering and controlling the current and voltage provided to the electrodes. The current and voltage controlling circuit includes a power supply for generating a voltage or current, an intermediary storage device and a first switching circuit interposed and coupled to the power supply and the intermediary storage device. The intermediary storage device is selectively coupled to the drug delivery device through a second switching circuit or device. Energy from the power supply is transferred and stored in the intermediary storage device for later delivery to the transdermal drug delivery device. In this way, should a component of the circuit fail, the energy or power delivered to the drug delivery device is interrupted or maintained at least equal to a predetermined safe level to avoid damage or injury to the patient's skin.

REFERENCES:
patent: 4141359 (1979-02-01), Jacobsen et al.
patent: 4292968 (1981-10-01), Ellis
patent: 4456012 (1984-06-01), Lattin
patent: 4764164 (1988-08-01), Sasaki
patent: 5047007 (1991-09-01), McNichols et al.
Application notes of Maxim Company, pp. 1-19 to 1-20, undated.

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