Electrocardiographic electrode

• US 4,938,219 A
• Filed: 10/17/1989
• Issued: 07/03/1990
• Est. Priority Date: 01/16/1987
• Status: Expired due to Fees

• Current Assignee: Fukuda Denshi Company Limited, Kabushiki Kaisha Riken
• Original Assignee: Fukuda Denshi Company Limited, Kabushiki Kaisha Riken
• Inventors: Ishii, Hiroyoshi, Suzuki, Kenzo, Shimizu, Chuji, Kaneko, Misao, Onodera, Yasuaki, Kawamoto, Hiroshi
• Primary Examiner(s): Cohen, Lee S.
• Assistant Examiner(s): Schaetzle, Kennedy
• Application Number:
  US07/423,590
• Time in Patent Office: 259 Days
• Field of Search: 128/639, 128/640, 128/641, 128/644, 128/802, 128/803
• US Class Current: 600/391
• CPC Class Codes: A61B 2562/0217 Electrolyte containing
• CPC Class Codes: A61B 5/25 Bioelectric electrodes therefor

Abstract

An electrocardiographic electrode is disclosed, which comprises an electrode element consisting of a synthetic resin electrode element having a head portion with a lead attached thereto and having a straight recessed portion, a neck portion having an engagement portion narrower than the head portion and capable of being engaged in an expansible member and a straight portion continuous to the straight recessed portion of the head portion and a bottom portion formed under, broader than and supporting the neck portion and to be held in contact with the skin of a living body, the outer surface of the synthetic resin electrode element member being imparted with electric conductivity by coated metal powder, an expansible member engagedly locked in the engagement portion of the neck portion, and an adhesive film consisting of an adhesive, having a central portion and secured to the expansible member to be held in close contact with the skin of the living body.

Claims

1. An electrocardiographic electrode comprising:

(a) a metal-powder coated synthetic resin electrode element comprising a head portion for attachment to an electrical lead, a bottom portion for contacting the skin of a living body, and a neck portion connecting said head portion with said bottom portion and forming an engagement section of said electrode element for engaging an expansible sheet-like member, said head portion having a downwardly and outwardly sloped substantially conoidal section, said conoidal section having at least one recessed portion which forms a continuous vertical surface with said neck portion;

(b) an expansible sheet-like member having upper and lower surfaces and a central opening engaging said neck portion of said electrode element, said bottom portion of said electrode element and said conoidal section being arranged to support said sheet-like element between them; and

,

(c) an adhesive film secured to said lower surface of said expansible member for retaining said electrocardiographic electrode on the skin of a living body.

2. The electrocardiographic electrode according to claim 1, wherein said bottom portion has an irregular bottom surface area for contact with the skin of the living body.