Pressure sensitive adhesive compositions for medical electrodes
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United States of America Patent
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May 13, 1986
Issued Date -
N/A
app pub date -
Nov 20, 1984
filing date -
Nov 25, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heterogeneous, pressure-sensitive, electrically conductive adhesive for disposable biomedical electrodes. The adhesive consists of two phases: a viscoelastic polymeric adhesive phase and an electrically conductive aqueous phase containing a water receptive polymer, a humectant, and an electrolyte. Both phases are intimately interdispersed and the adhesive is applied as a relatively thin film on a supporting substrate. The adhesive is characterized in that it establishes a physical equilibrium with the ambient system so that varying concentrations of moisture in the atmosphere are accommodated and tolerated by the adhesive without loss of viscoelastic and adhesion capabilities and without impairment of electrical conductivity values even under conditions of both high and of low relative humidity.
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