High voltage constant current source for iontophoresis

Details High voltage constant current source for iontophoresis High voltage constant current source for iontophoresis

1976-08-18

1978-09-26

Pellinen, A. D.

Surgery

Truss

Pad

363 21, A61N 130

Patent

active

041162382

ABSTRACT:
A regulated current high voltage source for use in driving an iontophoresis probe. The source provides a highly regulated current to the iontophoresis probe up through voltages substantially in excess of a kilovolt in order to maintain the probe ion injection rate under conditions of partial probe blockage. The source employs a DC-to-DC inverter, comprising a blocking oscillator and pulse transformer, with the load provided in the output circuit of the transformer in a feedback arrangement to a regulating amplifier and driver circuit for the DC input to the pulse transformer and blocking oscillator. A separate timing oscillator having a period of several seconds is optionally employed to disable the source and eliminate the high voltage output in order to generate intermittent ion injection.

REFERENCES:
patent: 3304517 (1967-02-01), Yamanaka et al.
patent: 3311805 (1967-03-01), Kittl et al.
patent: 3421069 (1969-01-01), Minks
patent: 3541420 (1970-11-01), Rees
patent: 3541420 (1970-11-01), Rees
patent: 3812858 (1974-05-01), Oringer
patent: 3923063 (1975-12-01), Andrews et al.
patent: 3958168 (1976-05-01), Grundberg

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