The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 1994
Filed:
Apr. 26, 1993
David A Montecalvo, Plymouth, MN (US);
David Rolf, Minneapolis, MN (US);
Lec Tec Corporation, Minnetonka, MN (US);
Abstract
A hydrogel matrix is provided for a multipupose medical electrode having an electrically conductive backing. The matrix comprises a dispersion of a natural or a synthetic hydrophilic polymer, e.g., polyacrylamide, polyacrylic acid, modified starch, or gum karaya, gum acacia, locust bean gum or the like, water, and a humectant such as triethylene glycol or glycerol. The matrix is a flexible sheet having a tacky lower surface for establishing a bond to provide electrical contact with the skin of a patient. The matrix has a resistivity greater than the resistivity of the electrical conductive backing and includes a gelation inhibitor such as a salt of a weak acid, e.g., Mg(OAc).sub.2 uniformly distributed within the matrix in an amount sufficient to retard gelation of the matrix prior to forming the matrix into a flexible sheet.