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Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
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Formulation useful as skin preparation to improve signal stability of biosensors.
2014 Avery Dennison Corporation
English (United States)
This text was extracted from a Microsoft Word document.
This is the abbreviated version, containing approximately
94% of the total text.
Preparation Composition for Improving Signal Stability with Vital Signs and
Other Biological Sensors
Roger D. Lipman
of Invention: Formulation useful as skin preparation to improve
signal stability of biosensors.
Nature of the Problem: Long term monitoring or
measurement of vital signs, which in practice means monitoring over a period of
say 4-7 days with the same patch or skin adherent device, is subject to
degradation in the electrical signal arising from the variable measured. Little
work seems to have been published on use of a "skin prep" to reduce
the variability of the skin substrate and to stabilize skin impedance. The
present invention proposes a formulation to accomplish this.
Utilization of Invention: As adjunct product for
use with long term wearable sensor devices.
Detailed Description of the Invention:
50% solution of polyvinyl acetate (eg Mowilith 50) is dissolved in isopropyl
alcohol or a mixture of isopropyl alcohol and ethyl acetate. Aqueous dispersion
of 80% Ag plus aqueous dispersion of 20% AgCl added to the solution of Mowilith
50. Electrolytes NaCl and or KCl may
also be present in the amount of 0.1 to 2wt% of total formulation. Minimum
amount of silver TBD. Suspension is painted on skin only under where electrodes
will be placed. Allow to dry. (Note there cannot be a continuous coating on
skin otherwise electrodes will be short-circuited.) Also, an interpenetrating
network hydrogel membranes of sodium alginate and po...