Wound dressing
A wound dressing is provided that includes at least a support including a thin pliable film with a top face and a bottom face, a pressure-sensitive adhesive layer applied to at least a portion of the bottom face of the thin pliable film, a protective layer applied detachably to the pressure-sensitive adhesive layer opposite the support and an additional layer either in the form of a uniform layer such as a film, or in the form of a frame, covering the top face of the thin pliable film. At least a part of at least the thin pliable film is trimmed in such a way that a space is created between the additional layer and the thin pliable film, the space providing a beginning for the easy removing of the additional layer.
1. A wound dressing comprising:
at least a support comprising a thin pliable film with a top face and a bottom face;
a pressure-sensitive adhesive layer applied to at least a portion of the bottom face of the thin pliable film
a protective layer applied detachably to the pressure-sensitive adhesive layer opposite the support;
an additional layer that is one of a uniform layer and a frame, covering the top face of the thin pliable film, the additional layer extending beyond the thin pliable film to provide at least a tab for ease in handling and application of a dressing; and
at least one pre-cut line formed into at least the thin pliable film, an end portion of the thin pliable film being configured to be torn at the at least one pre-cut line to result in a curved edge portion of the thin pliable film at an intersection between the thin pliable film and the additional layer, and at least a part of at least the thin pliable film is trimmed such that a layer space is defined between the additional layer and a remaining outer edge of the thin pliable film, after the end portion of the thin pliable film is torn along the pre-cut line,
wherein said space provides a beginning for removing of the additional layer.
2. The wound dressing according to claim 1 , wherein the pre-cut line is obtained by performing a series of incisions into at least the thin pliable film, and
wherein an incision space separates two adjacent incisions.
3. The wound dressing according to claim 2 , wherein each incision of the pre-cut line has a length between 0.5 mm and 3 mm, and the incision space between two incisions is between 1 mm and 3 mm.
4. The wound dressing according to claim 1 , wherein the protective layer is made of a material having an adhesive resistant surface on a dressing cover area, and the film material selected from the group consisting of a plastic, PET, metalized plastic, foil, and paper.
5. The wound dressing of claim 4 , wherein the adhesive resistant surface is silicone-based.
6. The wound dressing according to claim 1 , wherein the thin pliable film and the pressure-sensitive adhesive layer are trimmed.
7. The wound dressing according to claim 1 , wherein the thin pliable film, the pressure-sensitive adhesive layer, and the protective layer are trimmed.
8. The wound dressing of claim 1 , wherein the thin pliable film is made of a material selected from the group consisting of polyurethane, polyethylene, polypropylene, styrene-isoprene copolymers, styrene-butadiene block copolymers, butadiene rubbers, isoprene rubbers, neoprene rubbers, acrylonitrile rubbers, silicone rubbers, butyl rubbers, chloroprene rubbers, polyvinylchloride, polyamides, foamed material and non-woven material, or mixtures thereof.
9. The wound dressing according to claim 1 , wherein the uniform layer is a film.
10. A process for the production of a wound dressing including at least a support including a thin pliable film with a top face and a bottom face, a pressure-sensitive adhesive layer applied to at least a portion of the bottom face of the thin pliable film, a protective layer applied detachably to the pressure-sensitive adhesive layer opposite the support, and an additional layer that is one of a uniform layer and a frame, coating the top face of the thin pliable film, said process comprising at least the following steps:
forming at least one pre-cut line into at least the thin pliable film; and
tearing off an end portion of the thin pliable film along the pre-cut line to result in a curved edge portion of the thin pliable film at an intersection between the thin pliable film and the additional layer, and to trim at least the thin pliable film such that a layer space is defined between the additional layer and a remaining outer edge of the thin pliable film, said space providing a beginning for removing of the additional layer.
11. The process according to claim 10 , wherein the at least one pre-cut line is obtained by performing a series of incisions into at least the thin pliable film.
12. The process according to claim 11 , wherein each incision of the at least one pre-cut line has a length between 0.5 mm and 3 mm and the space between two incisions is between 1 mm and 3 mm.
13. The process according to claim 10 , wherein the at least one pre-cut line is formed into the thin pliable film and the pressure-sensitive adhesive layer.
14. The process according to claim 10 , wherein the at least one pre-cut line is formed into the thin pliable film, the pressure-sensitive adhesive layer, and the protective layer.
15. The process according to claim 10 , wherein the uniform layer is a film.