Iontophoretic patch with hydrogel reservoir

Details Iontophoretic patch with hydrogel reservoir Iontophoretic patch with hydrogel reservoir

1997-09-30

1999-03-16

Dees, Jose'G.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Web, sheet or filament bases; compositions of bandages; or...

424443, 424444, 424447, 604304, 6048901, 6048921, A61K 970

Patent

active

058826777

ABSTRACT:
An improved hydrogel reservoir for use in two-compartment iontophoretic patches is described. The hydrogel reservoir contains a water soluble polyelectrolyte and a fluid. The reservoir may also contain a matrix forming material such as polyvinylpyrrolidone. A preferred water-soluble polyelectrolyte is sodium polystyrene sulfonate.

REFERENCES:
patent: 4927408 (1990-05-01), Haak et al.
patent: 5084008 (1992-01-01), Phipps
patent: 5203768 (1993-04-01), Haak et al.
patent: 5250022 (1993-10-01), Chien et al.
patent: 5362308 (1994-11-01), Chien et al.

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