Surgery – Truss – Pad
Patent
1986-02-24
1989-03-28
Apley, Richard J.
Surgery
Truss
Pad
128156, 604304, 604307, 206440, 206441, A61F 1300, A61F 1500
Patent
active
048154571
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to adhesive articles used to cover human and animal skin. The invention relates to an adhesive dressing which is easy to apply to skin because of a combination of special features. The dressing comprises a plastic film coated on one surface with a pressure-sensitive adhesive and a non-adhesive support protecting this adhesive before use.
BACKGROUND OF THE INVENTION
Adhesive articles and their use as dressings are well known and have been the subject of many patent applications. French Pat. Nos. 1025117, 1288390 and 2012584 describe adhesive dressings composed of a synthetic or natural plastic film, provided with a pressure-sensitive adhesive and a non-adhesive support, such as siliconized paper, protecting the adhesive. The plastic film is very thin (on the order of 20 microns) and flexible, and tends to adhere to itself and form folds when the support is pulled off before positioning on the skin. These folds make use of the dressing difficult or even impossible, since they prevent the dressing from assuming the contours of the skin, which is necessary for effective protection of the wound.
Several solutions have been proposed for avoiding this drawback. One such is described in European Patent Application No. 0051935. This solution consists in using a rigid support that does not adhere to the plastic film as strongly as the adhesive that keeps the film in place on the skin. This support is attached to the surface of the film that lacks adhesive. Thus when the support protecting the adhesive is pulled off before positioning of the dressing, the plastic film is held flat by the rigid support. The film is then applied to the skin and the rigid support can be removed since it adheres weakly to the plastic film. This device does, however, require the use of an additional support. This is true also of European Patent Application No. 0081890.
European Patent Application No. 0081889 describes another solution, in which both the protective support and the film of the adhesive dressing are scored on either side of a central zone. To apply the dressing, the central section of the protective support is removed, the dressing is affixed to the skin, and the outer sections of the support and film are then pulled away leaving the central zone stuck to the skin. This device is complex since matching incision lines must be made in the protective support and film. Besides, the-outer sections of the plastic film are unused since they are removed with the rest of the support.
It is an object of the present invention to provide a simple and easily made dressing which enables the drawbacks described above to be avoided. The invention relates to a dressing which can be affixed by one person and which is economical, since it does not require removal of part of the plastic film.
GENERAL DESCRIPTION OF THE INVENTION
The dressing of the present invention is characterized in that: a transverse fold. fold. with an adhesive such that the said area adheres more strongly to the corresponding area of the other part of the support than to the plastic film.
The dressing can be folded back on itself in two equal parts, but it may be preferable that one part slightly overlaps the other to facilitate grip.
The score line can be a line of weakness obtained by perforation or a preferred complete cut which allows separation without tearing.
The function of the area of the dressing that corresponds to the area of the support between the score line and the fold is, once it has been uncovered, to allow the dressing to be positioned. Hence the size of the said area of the support can be varied quite considerably according to the present invention. In general, the size of the said area will be relatively small in the case of small dressings and larger for large dressings.
The adhesive which binds the two areas of the support can be chosen without restriction from among double-sided adhesives, hot-melt adhesives or pressure-sensitive adhesives. Above all it is important that the bond between t
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Barreteau Jean-Pierre
Mazars Paul
Apley Richard J.
Beghin-Say S.A.
Breiner A. W.
Prebilic Paul
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