Skin preparatory composition for use with electrocardiograph and electroencephalograph monitoring electrodes

• US 4,658,826 A
• Filed: 07/22/1980
• Issued: 04/21/1987
• Est. Priority Date: 02/12/1979
• Status: Expired due to Term

• Current Assignee: D O Weaver and Company
• Original Assignee: D O Weaver and Company
• Inventors: Weaver, David O.
• Primary Examiner(s): Lovering, Richard D.
• Application Number:
  US06/171,101
• Time in Patent Office: 2,464 Days
• Field of Search: 252/316, 252/521, 252/DIG. 5, 252/315.3, 252/518, 128/803, 128/419 R, 128/640, 128/802
• US Class Current: 600/386
• CPC Class Codes: A61B 5/25 Bioelectric electrodes therefor
• CPC Class Codes: A61B 5/257 using adhesive means, e.g. adhesive pads or tapes
• CPC Class Codes: A61B 5/266 containing electrolytes, conductive gels or pastes
• CPC Class Codes: A61B 5/28 for electrocardiography [ECG]
• CPC Class Codes: A61B 5/325 Preparing electrode sites, e.g. by abrasion

Abstract

A skin preparatory composition for use in conjunction with electrocardiograph and electroencephalograph monitoring electrodes containing karaya gum in an amount sufficient to adhere the electrodes to the skin, sodium citrate in an amount which imparts sufficient electrolytic properties to the composition, an abrasive in an amount effective to reduce the impedance of the skin to a satisfactory level when the composition is applied thereto, and a vehicle for these constituents. The karaya gum effectively removes any perspiration, dirt, natural body oils, moisturing oils and lotions, and the attendant electrical interference from the skin. A wetting agent in an amount sufficient to aid in solubilizing the karaya gum in the vehicle and a preservative in an amount sufficient to extend the useful life of the composition may also be incorporated in the composition.

Claims

1. A skin preparatory composition for use with electrocardiograph and electroencephalograph monitoring electrodes, the composition functioning to suitably adhere the electrodes to the skin, to abrade the skin to reduce the impedance thereof to a satisfactory level for use in conjunction with an electrocardiograph or electroencephalograph, and to effectively remove perspiration, dirt, natural body oils, and moisturizing oils and lotions from the skin, the composition consisting essentially of:

karaya gum in an amount between about 1 wt % and about 15 wt % so as to adhere the electrodes to the skin and to remove said perspiration, dirt, natural body oils, and moisturizing oils and lotions from the skin;

sodium citrate in an amount between about 1.5 wt % and about 30 wt % so as to impart sufficient electrolytic properties to said composition thereby rendering said composition useful with said electrodes;

an abrasive in an amount between about 5 wt % and about 40 wt % effective to reduce the impedance of said skin to said satisfactory level when said composition is applied thereto; and

an aqueous vehicle in an amount between about 35 wt % and about 85 wt %.

2. The composition of claim 1 wherein said abrasive is fine pumice.

3. The composition of claim 1 wherein said composition further consists essentially of:

a wetting agent in an amount sufficient to aid in solubilizing the karaya gum in said vehicle.

4. The composition of claim 3 wherein said wetting agent is glycerin.

5. The composition of claim 3 wherein said composition further consists essentially of:

a combination of methylhydroxybenzoate in an amount of about 0.18 wt % and propylhydroxybenzoate in an amount of about 0.02 wt %, said combination functioning as a preservative to extend the useful life of said composition.

6. The composition of claim 1 wherein said composition further consists essentially of:

a preservative in an amount sufficient to extend the useful life of said composition.

7. The composition of claim 6 wherein said preservative is a combination of methylhydroxybenzoate in an amount of about 0.18 wt % and propylhydroxybenzoate in an amount of about 0.02 wt %.

8. The composition of claim 1 wherein said composition further consists essentially of:

a thickening agent in an amount sufficient to impart a desired consistency to said composition.

9. The composition of claim 8 wherein said thickening agent is carboxymethylcellulose.

10. A preparatory skin composition for use with electrocardiograph and electroencephalograph monitoring electrodes, the composition consisting of:

sodium citrate in an amount of about 6.5 wt %;

karaya gum in an amount of about 2.7 wt %;

glycerin in an amount of about 4.0 wt %;

fine pumice in an amount of about 21.6 wt %;

methylhydroxybenzoate in an amount of about 0.18 wt %;

propylhydroxybenzoate in an amount of about 0.02 wt %; and

water in an amount of about 65 wt %.

11. A process for securing a monitoring electrode to a patient'"'"'s skin, said process comprising:

(a) contacting said skin with a composition consisting essentially of;

sodium citrate in an amount of aoout 6.5 wt %;

karaya gum in an amount of about 2.7 wt %;

glycerin in an amount of about 4.0 wt %;

fine pumice in an amount of about 21.6 wt %;

methylhydroxybenzoate in an amount of about 0.18 wt %;

propylhydroxybenzoate in an amount of about 0.02 wt %; and

water in an amount of about 65 wt %; and

thereafter,

(b) applying said monitoring electrode to said skin, said composition firmly adhering said electrode to said skin while reducing the electrical resistance of said skin to a satisfactory level and effectively removing any perspiration, dirt, natural body oils, and moisturizing oils and lotions from said skin.