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:
Nov. 08, 1994
Filed:
Dec. 21, 1993
Steven K Itoh, Cottage Grove, MN (US);
Timothy M Dietz, St. Paul, MN (US);
Rosa Uy, St. Paul, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
The present invention discloses a low impedance, water-absorbing, ionically-conductive, hydrophilic pressure sensitive adhesive composition comprising an ionically-conductive, hydrophilic, pressure sensitive adhesive hydrogel and crosslinked poly(N-vinyl lactam) in an amount sufficient to retain low electrical impedance and maintain hydrogel adhesion and cohesion during use of the composition in the presence of water and other moisture tending to plasticize the hydrogel. Crosslinked homopolymers and copolymers of poly(N-vinyl pyrrolidone) having Swelling Capacity of at least 15 milliliters of water per gram of poly(N-vinyl pyrrolidone) are preferred. Adhesion values upon removal from mammalian skin after about four hours of adhesion are not greater than initial adhesion removal values, demonstrating ease of removal of electrodes of the present invention from skin.