Medical electrode

A - Human Necessities – 61 – B

Patent

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Details

A61B 5/04 (2006.01) A61N 1/04 (2006.01)

Patent

CA 2371754

An electrode providing electrical contact with a patient's skin includes a conductive member (11) adapted for connection to an external electrical apparatus, a non-liquid film (15) for electrically interfacing to the patient's skin, the non-liquid film being electrically, and mechanically connected to the conductive member. The non-liquid film includes an electrically conductive organic polymer plasticized with a polyhydric alcohol with said organic polymer being derived from a monomeric mixture comprising from about 15 pph to 30 pph acrylic acid, 0.5 pph to 30 pph N-vinyl pyrrolidine and 0.01 pph to 2 pph of a crosslinking agent. The monomeric mixture may further comprise from about 0.5 pph to 8 pph of a thickening agent selected from the group consisting of N-vinyl pyrrolidine/acrylic acid copolymers and N-vinyl pyrrolidine/vinyl acetate.

L'invention concerne une électrode médicale assurant le contact électrique avec la peau d'un patient, comportant un élément conducteur (11) à connecter à un appareil électrique externe, un film non liquide (15) permettant l'interface électrique par rapport à la peau du patient, le film non liquide étant connecté électriquement et mécaniquement à l'élément conducteur. Le film non-liquide possède un polymère organique électroconducteur plastifié à l'aide de polyol, polymère organique dérivé d'un mélange monomère comportant environ 15 pph à 30 pph d'acide acrylique, 0,5 à 30 pph de N-vinyl-pyrrolidone, et 0,01 à 2 pph d'un agent de réticulation. Le mélange monomère peut également contenir environ 0,5 pph à 8 pph d'un agent épaississant choisi dans le groupe formé de copolymères de N-vinyl-pyrrolidone/acide acrylique et de N-vinyl-pyrrolidone/acétate de vinyle.

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