Surgery: splint – brace – or bandage – Bandage structure – Skin laceration or wound cover
Patent
1994-01-10
1996-01-23
Maglione, Corrine M.
Surgery: splint, brace, or bandage
Bandage structure
Skin laceration or wound cover
602 43, 602 52, 602 54, A61F 1300
Patent
active
054861586
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention refers to a skin-friendly bandage or dressing for covering wounds, burns or similar damages of the human skin, or ostomi openings.
2. Description of the Related Art
From U.S. Pat. No. 4,867,748 is known a skin-friendly dressing comprising a water soluble or water swellable hydrocolloid, a water-insoluble, viscous elastomeric binder and optionally also a tackifying resin. This known dressing is formed as a sealing pad having bevelled outer edges and optionally also, if annular, a bevelled inner edge.
From EP Patent Application No. 164 319 is known a pressure relieving bandage comprising a pressure-sensitive adhesive layer containing a hydrocolloid, a foam layer provided with cuts dividing the foam layer, into sections, and a film layer between the adhesive layer and the foam layer. Because of the cuts in the foam layer, it is possible to remove one or more foam sections without damaging the bandage.
The dressings described in this and other similar patents are rather stiff as they must have a considerable thickness in order to contain a sufficient amount of moisture absorbing materials.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a bandage or wound dressing having a high moisture absorbing capacity and simultaneously a high degree of flexibility for covering surface areas or the human body.
It is also an object of the invention to provide a bandage or wound dressing comprising a medicament or a similar physiologically active material that may be transferred to the skin or mucous membranes to which the bandage or dressing is adhered.
According to the invention, it has been found that a surprisingly high degree of flexibility may be obtained without compromising the integrity and the absorbing properties when the bandage or wound dressing is provided with grooves or ditches.
The skin-friendly bandage or dressing according to the invention comprises a moisture absorbing, to skin and mucous membranes adhering adhesive sheet, consisting of a layer of a water swellable colloid which is dispersed in or mixed with a water insoluble viscous elastomer binder and, if desired, usual auxiliary materials, the adhesive sheet at one outwardly directed surface being firmly connected to a non-adhesive water impervious cover layer, and the other against the skin or mucous membrane directed adhesive surface being provided with a removable protecting sheet. The bandage or wound dressing is specificly characterized in that the adhesive sheet is provided with one or several grooves or ditches that fully or partly surround the central part of the adhesive sheet and that the cover layer follows the contour or the outwardly directed surface of one or several grooves or ditches.
The swellable colloid particles preferably consist of one or more water soluble or water swellable hydrocolloid polymers or gums. Suitable examples are carboxymethylcellulose, dextran, pectin, guar gum and polyvinylalcohol. Further examples of such materials are mentioned in U.S. Pat. No. 4,867,748, EP 0 122 344.
The elastomer binder, acting as a medium for dispersing the hydrocolloid particles, is any known water-insoluble elastomeric substance, preferably a polymer or copolymer. Suitable examples are polyisobutylene, silicone rubber, acrylonitride rubber, polyurethane etc. Further examples may be derived from the above mentioned EP 0 122 344.
If desired, any commonly used auxiliary material may be included as a component of the dressing, such as antioxidants, for example butylated hydroxyamisole or hydroxytoluene, deodorants such as chlorophyllins, or perfume agents. It is also common practice to add pharmacologically active ingredients in the adhesive composition, such as antibiotic or antimicrobial agents, such as neomycin, an antiseptic agents such as povidone iodine, and/or an antiinflammatory agent such as hydrocortisone or triamcinolone acetomide.
Further examples of such auxiliaries are enumerated in the literature, see for example EP 0 122 3
REFERENCES:
patent: 3339546 (1967-09-01), Chen
patent: 3674027 (1972-07-01), Fleischmajer
patent: 4214582 (1980-07-01), Patel
patent: 4612230 (1986-09-01), Liland et al.
patent: 4699134 (1987-10-01), Samuelsen
patent: 4867748 (1989-09-01), Samuelsen
patent: 5012801 (1992-05-01), Feret
patent: 5115801 (1992-05-01), Cartmell et al.
patent: 5250043 (1993-10-01), Castellana et al.
patent: 5356372 (1994-10-01), Donovan et al.
Arness Michael L.
Coloplast A/S
Maglione Corrine M.
LandOfFree
Grooved hydrocolloidal dressing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Grooved hydrocolloidal dressing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Grooved hydrocolloidal dressing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1501994