Medical electrode assembly

• US 4,543,958 A
• Filed: 12/06/1982
• Issued: 10/01/1985
• Est. Priority Date: 04/30/1979
• Status: Expired due to Term

• Current Assignee: Conmed Corporation (Jefferies Financial Group, Inc.)
• Original Assignee: NDM, Inc.
• Inventors: Cartmell, James V.
• Primary Examiner(s): Cohen, Lee S.
• Application Number:
  US06/447,423
• Time in Patent Office: 1,030 Days
• Field of Search: 128/639-641, 128/644, 128/783, 128/798, 128/802, 128/803, 128/303.13, 174/117 A
• US Class Current: 600/391
• CPC Class Codes: A61B 2562/0217 Electrolyte containing
• CPC Class Codes: A61B 2562/125 characterised by the manufacture of electrodes
• CPC Class Codes: A61B 5/25 Bioelectric electrodes therefor
• CPC Class Codes: A61B 5/259 using conductive adhesive means, e.g. gels
• CPC Class Codes: A61B 5/263 characterised by the electrode materials
• CPC Class Codes: A61B 5/266 containing electrolytes, conductive gels or pastes
• CPC Class Codes: A61B 5/324 Means for providing electrolytes, e.g. syringes

Abstract

Dispensable medical electrodes formed as separable segments of an indefinitely long substrate are formed by applying to the substrate a longitudinally extending stripe of a conductive paint and by overlaying the painted stripe at periodic intervals corresponding to the separable segments with films of a conductive adhesive material which films generally traverse the width of the substrate.

After conditioning the conductive adhesive films to a desired moisture content, the substrate is rolled spirally upon itself and stored in an electrode dispenser device. Two types of dispenser device are disclosed. In one type, the dispenser confines a humidity control solution which maintains substantially constant the moisture content of the conductive adhesive films. The second type of dispenser device confines an activating solution which is applied to the conductive adhesive films located on the electrode segments as the electrode segments are dispensed.

Claims

1. An assembly of medical electrodes comprising an extended sheet of dimensionally stable nonconductive substrate material, a stripe of conductive paint adhered to one side of said extended sheet and extending the length of said sheet, said sheet having a plurality of weakened portions spaced apart to define segments along the length of said sheet, the segments of said sheet occupying the spaces between said weakened portions including a broad heel section proximal one end of each segment and a narrow toe section proximal the other end of each segment, each said segment traversed by a film of electrolyte including conductive adhesive lying over said stripe, and lying over only said broad heel section.

2. The electrode assembly of claim 1 wherein said heel section is penetrated by a plurality of pores.

3. The electrode assembly of claim 1 wherein said weakened portions comprise perforations through said substrate.

4. The electrode assembly of claim 1 wherein said substrate winds spirally about itself.

5. An assembly of medical electrodes comprising an extended sheet of dimensionally stable nonconductive substrate material, a stripe of conductive paint adhered to one side of said extended sheet and extending the length of said sheet, said sheet having a plurality of weakened portions spaced apart to define segments along the length of said sheet, the segments of said sheet occupying the spaces between said weakened portions each traversed by a film of conductive adhesive lying over said stripe, wherein each of the segments of said sheet occupying the spaces between said weakened portions includes a broad heel section proximal one end of each segment and underlying said film of conductive adhesive and a narrow toe section proximal the other end of each segment and not underlying said film of conductive adhesive.

6. The electrode assembly of claim 5 wherein said heel section is penetrated by a plurality of pores.

7. The electrode assembly of claim 5 wherein said weakened portions comprise perforations through said substrate.

8. The electrode assembly of claim 5 wherein said substrate winds spirally about itself.