Biomedical electrode having a disposable electrode and a reusable leadwire adapter that interfaces with a standard leadwire connector

• US 5,928,142 A
• Filed: 12/17/1996
• Issued: 07/27/1999
• Est. Priority Date: 12/17/1996
• Status: Expired due to Fees

• Current Assignee: Conmed Corporation (Jefferies Financial Group, Inc.)
• Original Assignee: NDM, Inc.
• Inventors: Sturtevant, Wayne Robert, Wolf, Michael Lee, Cartmell, James Vernon
• Primary Examiner(s): DeMille, Danton D.
• Assistant Examiner(s): Ruddy, David M.
• Application Number:
  US08/767,671
• Time in Patent Office: 952 Days
• Field of Search: 600/372, 600/382, 600/384, 600/386-397, 607/152, 607/153, 607/149
• US Class Current: 600/372
• CPC Class Codes: A61B 2562/0215 Silver or silver chloride containing
• CPC Class Codes: A61B 2562/0217 Electrolyte containing
• CPC Class Codes: A61B 2562/125 characterised by the manufacture of electrodes
• CPC Class Codes: A61B 5/259 using conductive adhesive means, e.g. gels
• CPC Class Codes: A61B 5/274 using snap or button fasteners
• CPC Class Codes: A61B 5/28 for electrocardiography [ECG]
• CPC Class Codes: Y10S 439/909 Medical use or attached to human body
• CPC Class Codes: Y10T 156/108 Flash, trim or excess removal
• CPC Class Codes: Y10T 156/1082 Partial cutting bonded sandwich [e.g., grooving or incising]
• CPC Class Codes: Y10T 29/49002 Electrical device making

Abstract

A biomedical electrode for an electrocardiograph or similar device is provided. The biomedical electrode includes a disposable electrode having an electrically conductive gel layer and a smooth layer film. The disposable electrode interfaces with a reusable leadwire connector having the relatively expensive metallic conductive material. The reusable leadwire adapter includes a vinyl top layer which attaches to the smooth layer film of the disposable electrode through surface attraction. The reusable leadwire adapter may include a suction cup which attaches to the disposable electrode through a partial vacuum. The reusable leadwire also includes a stud member which snaps into a standard leadwire connector.

Claims

1. A disposable electrode comprising:

a smooth layer film having an upper side, a lower side having an adhesive coating, and a first opening said smooth layer film being adapted to interface with a reusable leadwire adapter by means of surface attraction;

a top layer having an upper side, a lower side having an adhesive coating, and a second opening corresponding to said first opening, said upper side of said top layer is secured to said lower side of said smooth layer film by means of said adhesive coating on said smooth layer film; and

an electrically conductive patch having an upper side and a lower side and comprising an electrically conductive gel layer and an anchoring layer formed of a porous material having sufficient porosity such that said anchoring layer is laminated on said electrically conductive gel layer, said upper side of said electrically conductive patch is secured to said lower side of said top layer by means of said adhesive coating on said top layer, and said lower side of said electrically conductive patch contacts a patient;

wherein said disposable electrode does not include a conductive terminal.

2. The disposable electrode of claim 1 wherein said smooth layer film comprises a polyethylene material.

3. The disposable electrode of claim 1 wherein said upper side of said smooth layer film has an adhesive coating.

4. The disposable electrode of claim 1 wherein said lower side of said top layer includes a center portion and an outer portion, said electrically conductive patch is positioned within said center portion, and said outer portion of said top layer secures said electrode to the patient.

5. The disposable electrode of claim 4 wherein said adhesive coating on said lower side of said top layer is a patient-contact adhesive coating.

6. The disposable electrode of claim 1 wherein said electrically conductive gel layer comprises a hydrogel material.

7. The disposable electrode of claim 1 further comprising an electrical stabilizing strip having an upper side including an adhesive coating and a lower side, and wherein said electrically conductive patch has a center portion and an outer portion, a perforated portion of said anchoring layer is positioned on said upper side and within said center portion of said electrically conductive patch, and upper side of said electrical stabilizing strip is secured on said lower side and within said center portion of said electrically conductive patch by means of said adhesive coating on said electrical stabilizing strip, such that said electrically conductive gel layer contacts the patient through said outer portion of said electrically conductive gel layer.

8. The disposable electrode of claim 7 wherein said electrical stabilizing strip is an insulator.

9. The disposable biomedical electrode of claim 8 wherein said insulator comprises a polyester material.

10. The disposable electrode of claim 1 further comprising a release liner secured to said lower side of said top layer for protection of said disposable electrode prior to use.

11. The disposable electrode of claim 10 wherein said lower side of said top layer has a pull tab, so as to provide a grippable surface to facilitate removal of said top layer from said release liner.