Disposable electrode

• US 4,243,052 A
• Filed: 01/08/1979
• Issued: 01/06/1981
• Est. Priority Date: 01/08/1979
• Status: Expired due to Term

• Current Assignee: Stimtech Products A General Partnership of MA
• Original Assignee: Stimtech Incorporated
• Inventors: Bailey, William D.
• Primary Examiner(s): Cohen, Lee S.
• Application Number:
  US06/001,502
• Time in Patent Office: 729 Days
• Field of Search: 128/639-641, 128/644, 128/303.13, 128/783, 128/798, 128/802, 128/803
• US Class Current: 607/152
• CPC Class Codes: A61N 1/0456 Specially adapted for transcutaneous electrical nerve stimulation [TENS]
• CPC Class Codes: A61N 1/048 Electrodes characterised by a specific connection between lead and electrode
• CPC Class Codes: A61N 1/0492 Patch electrodes A61N1/0412, A61N1/0428 take precedence

Abstract

A disposable electrode includes a fabric backing and a conductive mesh layer laminated thereto. A conductive polymer adhesive interfaces the conductive mesh with the skin of the patient. In order to promote uniform current density, connection to external apparatus occurs by means of a stranded wire which penetrates the mesh from the top and extends laterally in opposite directions along the electrode, intermediate the mesh and the adhesive.

Claims

1. A transcutaneous electrode providing electrical contact with a patient'"'"'s skin, having substantial uniformity of current density and resistance to physical deformation comprising:

(a) a conductive member having upper and lower surfaces generally defining the configuration of said electrode and having an opening in the central portion thereof;

(b) an electrically conductive adhesive material, electrically and physically connected to and covering the lower surface of said conductive member, for interfacing said conductive member with the patient'"'"'s skin;

(c) electrically nonconductive backing means laminated to the upper surface of said conductive member, and defining the configuration of said electrode, said backing having an opening in the central portion thereof;

(d) electrical connection means for physically and electrically coupling said conductive member with an external electrical apparatus, said connection means including

(i) a stranded wire, penetrating said backing means central opening and further penetrating said conductive member central opening, thence dividing into two strands which extend in opposite directions away from said conductive member central opening, spanning between substantially opposite extremes of said conductive member and in physical and electrically conductive relation with said lower surface of said conductive member, and

(ii) electrically insulating reinforcing tape means overlaying said two strands and holding them in physical contact to said lower surface of said conductive member.

2. An electrode as described in claim 1 wherein said conductive member and backing means comprise an electrically mesh material laminated onto a substantially coextensive electrically nonconductive flexible material.