WO2013001210A1

WO2013001210A1 - Dressing for covering a projecting portion

Info

Publication number: WO2013001210A1
Application number: PCT/FR2012/051397
Authority: WO
Inventors: Pascal VALOIS
Original assignee: Laboratoires Urgo; Societe De Developpement Et De Recherche Industrielle
Priority date: 2011-06-28
Filing date: 2012-06-20
Publication date: 2013-01-03
Also published as: FR2977149A1; FR2977149B1

Abstract

The invention relates to a dressing (20, 30) including two sections joined together along a plurality of the edges thereof so as to form a pocket (11) that is open on one side, each section (20, 30) having two opposite main surfaces, i.e. an adhesive surface (25, 35) and a non-adhesive surface (26, 36). The dressing (10) has an initial flat configuration, in which the two sections (20, 30) are placed one on top of the other, in which the non-adhesive surfaces (26, 36) of the sections define the inner surface of the pocket (11), and in which the adhesive surfaces (25, 35) of the sections define the outer surface of the pocket, said adhesive surfaces (25, 35) being covered by at least one removable protector (305). The dressing (10) is sufficiently deformable so as to be turned inside out, from the initial configuration thereof to a concavo-convex use configuration in which the adhesive surfaces (25, 35) define a concave inner surface and the non-adhesive surfaces (26, 36) define a convex outer surface.

Description

DRESSING TO COVER A HIGHLIGHT

FIELD OF THE INVENTION

The present disclosure relates to a dressing and a method of shaping the dressing.

Such a dressing may be used to cover a projecting portion of the body such as, for example, an elbow or heel.

STATE OF THE PRIOR ART

Dressings are already known for treating wounds located on protruding parts of the body such as an elbow, a heel, a finger or toe end.

An example of a dressing is described in European Patent No. EP 0 805 663 B1. One region of this dressing has a concavo-convex shape (ie a cup shape) with an inner, body-oriented, concave surface and a surface convex exterior. Another region of the dressing has one or more flaps useful for fixing the dressing. The multilayer dressing includes an inner, body-oriented layer of a pressure-sensitive adhesive and an absorbent material, and an outer support layer.

Such a dressing has the disadvantage of having a complex shape that makes it difficult and expensive to manufacture. In addition, this complex shape, including the concavo-convex region, makes the dressing uncomplicated, which can be a problem for the packaging and / or storage of the dressing. In particular, such a dressing is difficult to pack individually in a compact and economical package.

Another example of a dressing is described in European Patent No. EP 0 552 271 B1. This dressing comprises two sections having a fan-shaped outline, joined by their vertices and bonded along their lateral edges by gluing, heat sealing or by means of an adhesive tape. These two joined pieces form an open pocket on one side. To maintain this dressing on a protruding body portion, it is taught in EP 0 552 271 B1 to use a bandage, such as a tubular bandage, an adhesive tape or an adhesive coating on the surface of the dressing facing the wound, that is to say on the inner surface of the pocket. However, EP 0 552 271 B1 does not specify how to deposit the adhesive coating, whereas this deposit presents a real difficulty because the adhesive coating is to be deposited inside the pocket.

There is therefore a need for a new type of dressing, different from existing dressings and deprived, as far as possible, of their disadvantages.

PRESENTATION OF THE INVENTION

The present disclosure relates to a dressing comprising two sections united on several of their edges so as to form an open pocket on one side, each pan having two opposite main faces including an adhesive face and a non-adhesive face. This dressing has a flat initial configuration in which the two panels are superimposed, in which the non-adhesive faces of the panels define the inner surface of the pocket, and in which the adhesive faces of the panels define the outer surface of the pocket, these faces adhesives being covered by at least one removable protector. In addition, in a use configuration, the dressing has a concavo-convex shape configuration in which the adhesive faces define a concave inner surface and the non-adhesive faces define a convex outer surface. The dressing can be returned from its initial configuration to its configuration of use.

In its initial configuration, such a dressing has a flat shape, which facilitates its packaging and / or storage. In particular, such a dressing can be easily individually wrapped in a package which will itself be relatively flat. The volume required to store dressings (packaged or not) remains limited. In addition, these dressings (packaged or not) can be easily stacked, for example inside a secondary packaging presentation or transport.

In addition, in the initial configuration, because the adhesive faces are outside the pocket and therefore kept at a distance from each other, they are not likely to stick to one another, even when the protector is removed.

In its configuration of use, such a dressing has a concavo-convex shape, or cup-shaped, which allows a better contact and a better maintenance of the dressing on the protruding part. In particular, the dressing may have a concavity substantially complementary to the convexity of the projecting portion to be covered. The dressing is deformable so that it can be returned from its initial configuration to its configuration of use. For example, the dressing is made of a flexible material, monolayer or multilayer. For example, the dressing comprises one or more flexible layers among: a polymer film, a polymer foam layer, a textile layer (woven or not), etc.

Another advantage of this dressing is that the user can shape the dressing, that is to say, pass it from its initial configuration to its configuration of use, without touching the adhesive faces or touching them very little. This minimizes the risk of contaminating these adhesive faces which, ultimately, are intended to be in contact with the body part to be covered. When this part of the body presents a wound, this reduces the risk of infection.

Such a dressing also has the advantage of being easily placed on a protruding part, as described below.

Such a dressing can be used to protect a protruding part of a human or animal body.

Such a dressing can be used to protect a protruding body part, healthy against external aggression. For example, this dressing can serve as elbow or knee.

Such a dressing may also be used to prevent the appearance of wounds or other lesions on a salient, healthy body part. In particular, this dressing can be used to cover a healthy body part (e.g. an elbow) of a person bedridden or wheelchair for an extended period of time, to prevent the appearance of pressure ulcer on this body part.

Such a dressing may also be used for the protection and treatment of wounds or other lesions located on a salient body part, in particular chronic wounds, ulcers, bedsores, burns.

It will be appreciated that one or more protectors may be used to cover the adhesive faces. For example, a single, two-sided, removable protector can be used. In another example, each adhesive face is covered by a removable protector of its own. In addition, to facilitate removal of the protector, it may have one or more gripping tabs protruding beyond the contour of the adhesive face. It will also be noted that the two parts of the dressing may be made in one or more pieces. Similarly, each pan can be made in one or more rooms. Thus, according to one example, the two parts of the dressing form a single piece. In another example, each pan is made of a single piece (ie there are two pieces in total). In another example, each pan is formed of several panels assembled together. The fact of making each pan into several panels further improves the conformability of the dressing.

In some embodiments, the two portions of the dressing belong to a single blank folded on itself along a fold line. The two sides are then defined on either side of the fold line. This simplifies the manufacture of the dressing, the two sides being manufactured at the same time.

In some embodiments, the blank is made flat. This makes it possible to use proven manufacturing techniques used for flat dressings, and further simplifies the manufacture of the dressing.

In some embodiments, each pan has a fan-shaped or dovetail-shaped outline, the two sides being joined by their vertices. When the two panels are made from a single blank, the blank can be cut according to the above-mentioned contours and folded on itself along a fold line coinciding with the apex of the two panels or, conversely, the flan can be folded and cut.

Preferably, the connections between the edges of the panels are deformable so as to allow the rollover of the dressing and sufficiently strong not to tear during the turnaround. For example, these bonds are flexible and resistant. Various connection means can be envisaged, such as welding, gluing, sewing, etc. In some embodiments, the edges of the two faces are bonded together by welding. For example, by high-frequency welding or ultrasonic welding.

In some embodiments, the dressing is elastically deformable so that it tends to return to its initial configuration in the absence of stress. In this case, the initial configuration constitutes a so-called "stable" configuration. The usage configuration can also be a stable configuration of the dressing.

In some embodiments, each panel has a multilayer structure comprising, from the adhesive side to the non-adhesive side, in 12 051397

In this order, an adhesive interface layer, a flexible absorbent layer and a possible protective or support surface layer.

When the dressing is used for the treatment of a wound, the adhesive interface layer is intended to come into contact with the wound, the flexible absorbent layer is intended to absorb the exudates of the wound, and the superficial layer is preferably impervious to fluids and bacteria and permeable to water vapor.

Each of the aforementioned layers may itself consist of two or more sublayers, of the same nature or different.

The adhesive interface layer is preferably permeable to allow exudate access to the absorbent layer. For this purpose, this interface layer will advantageously be discontinuous, and include a set of openings.

This interface layer may consist of any adhesive material normally used for application to the skin, especially a hypoallergenic adhesive mass, preferably compatible with a wound. It may be a pressure sensitive adhesive or "PSA" (for "Pressure Sensitive Adhesive"), this type of adhesive being described in the Handbook of Pressure Sensitive Adhesive Technology, third edition, Donatas Satas, chapter 13 -22. Pressure-sensitive adhesives based on acrylic, polyurethane, silicone, natural rubber, ethylene-vinyl acetate copolymer or block copolymers of the poly (styrene-isoprene-styrene) type can be used. .

Said adhesive material constituting the interface layer may be micro-adherent, that is to say, to temporarily fix the dressing on the wound, this dressing can be removed without the structure of the wound or the skin perilesional altered, so that the dressing is repositionable and facilitates nursing. This temporary fixation may also help the caregiver or user to secure the dressing using other means of attachment, eg to cover the dressing with a restraining means or tape. In this case, the interface layer may be chosen such that the dressing has a tack strength on steel plate of between 0.5 and 100 cN / cm, preferably between 5 and 40 cN / cm. This adhesive power is measured according to the method EN 1939 in which a dressing sample of 20 mm wide and 150 mm long is placed on a steel plate and in which, after 10 minutes, the adhesive strength with a dynamometer at a pulling speed of 100 mm / min at an angle of 90 °.

As an example of an adhesive material that may be used, there may be mentioned compositions based on silicone polymers, in particular silicone gels; polyurethane polymers, especially polyurethane gels; elastomer compositions containing hydrocolloids, in particular based on styrene-olefin-styrene triblock polymers; or else hydrogels, in particular based on AMPS polymer.

These adhesive compositions may be hydrophobic, hydrophilic, amphiphilic, and will be mainly chosen for their ability not to alter the wound in order not to interfere with the healing process during removal of the dressing, or even to promote the healing process.

The interface layer may incorporate one or more active substances commonly used in dressings, such as, for example, antimicrobial agents, anti-inflammatory compounds or compounds promoting the healing process.

In an exemplary embodiment, the interface layer is a perforated film coated with a silicone gel on one of its faces, the adhesive face being intended to come into contact with the skin, and the film for fixing the gel of silicone to the support of the dressing. The silicone gel may be formed on the perforated film by contacting gel precursors which crosslink according to a hydrosilylation or condensation reaction. Such systems are known from the prior art, for example in the documents EP-A-0 251 810,

A-0,300,620 or US-A-4,921,704.

In another exemplary embodiment, the interface layer is a discontinuous layer of composition containing an elastomer, a plasticizer, hydrocolloids and a tackifying resin. This discontinuous layer may be micro-adherent or not.

This composition can be molded and deposited directly on the dressing. It can also be coated on at least one of the faces of a perforated support, such as a knit, which is then fixed on the dressing.

This interface layer promotes the healing process by maintaining a moist environment in the wound, and also allows to convey assets.

The elastomer may be chosen from triblock poly (styrene-olefin-styrene) block polymers optionally combined with diblock copolymers. The tribiocs copolymers may be poly (styrene-ethylene-butylene-styrene) (abbreviated as SEBS) sold under the name KRATON ^® G1651, KRATON ^® G1654 and KRATON ^® G1652, or poly (styrene-ethylene-propylene -styrene) (abbreviated SEPS).

Among the plasticizer compounds that may be used, mention may in particular be made of mineral oils, polybutenes or phthalate derivatives. In a particularly preferred manner, use a mineral plasticizing oil selected from the products sold under the names ONDINA ^® 933 and ONDINA ^® 919.

Suitable hydrocolloids include, for example, pectin, alginates, natural vegetable gums such as, in particular, Karaya gum, cellulose derivatives such as carboxymethylcelluloses and their alkali metal salts, such as sodium or calcium, which are known in the art. the reference CMC Blanose® 7H4XF, as well as synthetic polymers based on superabsorbent acrylic acid salts, for example the products sold by BASF under the name Luquasorb ^® 1003 or by the company CIBA Specialty Chemicals under the name SALCARE ^® SC91 as well as mixtures of these compounds.

The tackifying product may be chosen from tackifying resins, polyisobutylenes of low molecular weight or mixtures thereof. In general, it will be preferred to use hydrogenated resins such as ESCOREZ® resins of the 5000 series and most particularly the ESCOREZ® 5380 resin.

The composition based on hydrocolloids including elastomer may include if necessary the surfactant Montanox® 80 or Sepinov polymer ^® EMT 10 (salt of 2-methyl-2 acid - [(l-oxo-2-propenyl) amino] 1-propanesulfonic acid and 2-hydroxyethyl ester of propenoic acid) both marketed by the company SEPPIC to optimize the rate of gelation, the wettability or the release of active agents possibly present in the composition.

Microadherent compositions based on elastomer including particularly suitable hydrocolloids comprise, for a total of 100% by weight:

0.05 to 1% by weight of antioxidant;

- 10 to 60% by weight of tackifying resin; 2 to 20%, preferably 12 to 16%, by weight of sodium carboxymethylcellulose;

10 to 65% by weight of a plasticizing mineral oil;

5 to 25% by weight of a poly (styrene-ethylene-butylene-styrene) or poly (styrene-ethylene-propylene-styrene) triblock polymer; and

1 to 15% by weight of a copolymer consisting of a salt of 2-methyl-2 - [(1-oxo-2-propenyl) amino] -1-propanesulfonic acid and of the ester 2 hydroxyethyl propenoic acid.

The adhesive faces of the dressing are covered with one or more removable protectors, usually peelable. This protector can be in the form of a film. For example, it may be a polyolefin film such as polyethylene or polypropylene; a silicone and / or fluorinated polyester film; or a silicone paper. In particular, it may be a polyester film of 50 μιη fluorinated silicone thickness on its face coming into contact with the adhesive side of the dressing.

This protector may be formed of one or more (e.g., two) overlapping parts.

The surface layer of protection or support is optional. It may consist of any material or combination of materials usually used for this purpose in the field of dressings.

In some embodiments, this surface layer is impervious to liquids and bacteria, non-occlusive and relatively thin. It may be formed, for example, of a monolayer or multilayer film, a nonwoven or a film associated with a nonwoven. Examples of nonwovens that may be mentioned are nonwovens made of polypropylene, polyethylene, polyurethane, polyamide or polyester. Examples of films that may be mentioned are polyurethane films, low density polyethylene films, films based on thermoplastic polyether-polyester copolymer. As examples of films associated with a nonwoven, mention may be made of complex films based on polyurethane.

This surface layer may be bonded to the absorbent layer by gluing. In general, it should be noted that the means for assembling different layers of a dressing between them are well known to those skilled in the art.

In some embodiments, on the edges of the panels that surround the opening of said pocket, the surface layer exceeds the outline of the other layers of the dressing so as to form a flange, this flange having an adhesive face oriented on the same side as the adhesive faces of the panels, that is to say the outer side of the bag in the initial configuration.

The adhesiveness of the adhesive face of the flange may be greater, or even significantly greater than that of the adhesive faces of the panels when they are micro-adherent. For example, the tackiness of the adhesive face of the flange is such that the adhesive strength of the dressing on steel plate is between 100 and 400 cN / cm (adhesive power measured according to the method EN 1939).

The absorbent layer may consist of any material or combination of materials usually used for this purpose in the field of dressings. Among these materials, mention may be made of absorbent foams, in particular hydrophilic foams based on polyurethane; textile materials, in particular nonwovens based on absorbent or superabsorbent fibers; hydrogels; or a combination of these materials.

The present disclosure also relates to a dressing as described above, this dressing being in its initial configuration, and being packaged in an individual package.

As explained above, because of the flat shape of the dressing in its initial configuration, the individual packaging used may have a flat and compact shape, which limits the manufacturing cost of this package (material gain, simple tooling) and facilitates the storage of packaged dressings (space saving).

In some embodiments, the package comprises a stamped plate delimiting a footprint of a shape corresponding to that of the dressing in its initial configuration, this plate being covered by a cover covering the impression. Of course, other types of packaging are possible.

The present disclosure also relates to a method of shaping a dressing as described above, in which the dressing is initially in its initial configuration and in which:

the protector covering the adhesive face of a first panel is removed from the two panels,

this adhesive face is at least partially adhered to the lateral face of a protruding part,

remove the protector covering the adhesive side of the second pan, we slide fingers between the two sides, and

these parts are moved apart from each other, by maintaining a portion of the first panel in contact with the protruding part, so as to deform the dressing towards its configuration of use by turning it around the projecting part.

Note that the individual (hereinafter referred to as "manipulator") who handles the dressing and the individual (hereinafter referred to as "wearer") who will wear the dressing may be the same individual or two distinct individuals.

Note also that the projecting portion is not necessarily a body part, the dressing can be shaped on a projecting portion of an inert object. In this case, it is necessary to shape the dressing by changing it from its initial configuration to its configuration of use, before putting it on a protruding body part.

This may be of interest when the manipulator is not the wearer of the dressing. Indeed, depending on the circumstances, the manipulator (e.g. a nurse) may decide to put the dressing in its use pattern before positioning it on the protruding body portion of the wearer (e.g., a patient). In this case, the dressing must be peeled from the inert object after shaping and, advantageously, a repositionable adhesive type is used for the adhesive side of the dressing. The protruding portion of the inert object is preferably the cleanest possible to limit the risk of contamination of the adhesive side.

The manipulator can also decide, depending on the circumstances, to shape the dressing directly on the wearer. In this case, the dressing is returned directly to the protruding body portion of the wearer, and the adhesive faces are adhered to this body portion.

As previously mentioned, the protruding body portion of the wearer may have a wound (or any other type of lesion) or, on the contrary, be a healthy part.

The above-mentioned features and advantages, as well as others, will become apparent on reading the following detailed description of embodiments of the proposed dressing. This detailed description refers to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are schematic and are intended primarily to illustrate the principles of the invention. In these drawings, from one figure (FIG) to the other, identical elements (or element parts) are identified by the same reference signs.

FIG 1 shows in perspective an example of a dressing, in its initial configuration.

FIG 2 a view from above, according to the arrow II, of the dressing of FIG 1.

FIG 3 is a sectional view, along the III-III plane, of the dressing of FIG 2.

FIG 4 is a view of the dressing of FIG 1 in an intermediate configuration.

FIG 5 is a view of the blank from which the dressing of FIG 1 is obtained.

FIG 6 schematically represents the process for obtaining the blank of FIG.

FIG 7 schematically shows the different layers of material of the blank of FIG 5.

FIG 8 schematically represents the method for obtaining the dressing of FIG 1 from the blank of FIG 5.

FIG 9 is an exploded perspective view of the dressing of FIG 1 and its packaging.

FIG 10 is a sectional view (not-exploded), according to the X-X plane, of the dressing in its packaging.

FIGS. 11 to 17 represent the various steps of placing the dressing of FIG. 1 on the elbow of an individual.

FIG 18 is a view similar to that of FIG 5, showing another example of dressing.

FIG 19 is a view similar to that of FIG 15, showing the dressing of FIG 18.

FIG 20 is a view similar to that of FIG 17, showing the dressing of FIG 18.

DETAILED DESCRIPTION OF EXAMPLE (S) OF REALIZATION

Exemplary embodiments are described in detail below, with reference to the accompanying drawings. However, it is recalled that the invention is not limited to these examples.

FIGS. 1 to 4 show in perspective an example of a dressing 10 in its initial, flat configuration. This dressing 10 comprises two sections 20 and 30 joined on several of their edges so as to form a pocket 11 open on one side. For the sake of clarity, this side is called "front side" and is marked in the figures by the arrow 1F. The front edges 21, 31 of the two panels 20, 30 are free. The two sides 20 and 30 are joined on the rear and side sides of the dressing. The back and side sides (left and right) of the dressing 10 are marked in the figures by the arrows 1B and 1S, respectively.

FIG 5 is a view of the blank 100 from which the dressing of FIG 1 is obtained.

The blank 100 is manufactured flat on an assembly line, assembling several layers of material. An example assembly line is shown schematically in FIG.

In this example, a flexible absorbent layer 303 (e.g., a polyurethane foam) is unwound from a spool 307 and then coated with a coating system 308 via a void drum and heater pipe not shown. The flexible absorbent layer 303 is thus covered with an adhesive interface layer 304. These two layers 303, 304 are then fed to a rolling system 310. A support surface layer 302 (eg a nonwoven) and a layer of protector 305 (eg a silicone protector) are also fed to the rolling system 310. These four layers 302, 303, 304, 305 are laminated together to obtain a strip of multilayer material. FIG 7 shows a cross section of this strip of material. This strip is then fed to a cutting station 314 which will cut into the strip blanks 100 of the shape of that of FIG.

The blank 100 defines two sections 20, 30, joined by their vertices, each panel 20, 30 having a fan-shaped outline. These flaps are symmetrical with respect to a median line M of the blank 100. The blank 100 is folded along this median line M so as to superimpose the two panels 20, 30, the protective layer 305 being positioned outside the dressing 10 (see FIG 3). The median line M is located on the backside 1B of the dressing 10. The dressing 10 is then put in place in the frame of a welding device 320 (by high frequencies or ultrasounds). The lateral edges of the two sections 20, 30 are then bonded together by welding, the welds obtained being identified by the reference 324. During this operation, the possible surplus 325 of dressing 10 may be cut by the welding device 305. The dressing 10 obtained is in its initial flat configuration, as shown in FIG. 1, in which the panels 20, 30 are superimposed, substantially in contact with each other. Each panel 20, 30 has two opposite major faces including an adhesive face 25, 35 and a non-adhesive face 26, 36. The adhesive faces 25, 35 define the outer surface of the pocket 11. The adhesive faces 25, 35 are covered by the protective layer 305. This protective layer 305 is removable, for example peelable. The non-adhesive faces 26, 36 define the inner surface of the pocket 11. These non-adhesive faces 26, 36 are clearly visible in FIG. 4 or the dressing 10 is shown in an intermediate configuration in which the non-adhesive faces 26, 36 are discarded (the dressing 10 however not returned).

As shown in FIG. 3, each panel 20, 30 has a multilayer structure comprising, from its adhesive face 25, towards its non-adhesive face 26, 36, in this order, the removable protector 305, the adhesive interface layer 304, the flexible absorbent layer 303 and the surface layer 302. The side edges of the panels 20, 30 are bonded together by the welds 324.

By way of example, and with reference to FIGS. 2 and 3, the widest width L1 of the dressing 10, measured from one lateral side 1S to the other, is between 30 and 200 mm, e.g. about 130 mm. The smallest width L2 corresponding to the width of the tops of the panels 20, 30 is between 10 and 100 mm, e.g. about 60 mm. The greatest height L3 of the dressing 10, measured between the front 1F and rear 1B sides, is between 20 and 200 mm, e.g. about 90 mm. The height L4 of the arc formed by the front edges 21, 31 of the dressing 10 is between 10 and 100 mm, e.g. about 45 mm. Finally, the thickness L5 of the panels 20, 30 of the dressing does not exceed 10 mm and, for example, is between 0.5 and 10 mm. Such an example of dressing can be set up, in particular, on an elbow.

For an application on the end of a finger, the width L1 is, for example, between 10 and 60 mm, the width L2 is, for example, between 5 and 30 mm, the height L3 is, for example, between 10 and 60 mm, the height L4 is, for example, between 5 and 30 mm, and the thickness L5 is, for example, between 0.5 and 10 mm.

In its initial flat configuration, the dressing 10 can be packaged in a package 400, as shown in an exploded view in FIG. 9. The package 400 comprises two parts: a shell 420 delimiting a impression 421 for the dressing 10 and a cover 410 covering this impression 421. In the example shown, the shell 420 is formed of a plastic plate having been stamped to define the impression 421 of a shape substantially complementary to that of the dressing 10 in its initial configuration. The cover 410 is formed by a plastic cover covering the upper face of the shell 420 and covering the cavity 421. The seal may be welded by thermal welding on the shell 420. It will be noted that such a package is relatively flat and has a good compactness (see FIG 10), which promotes including storage and storage. The package 400 may be placed in a secondary package (not shown) to perform a sterilization operation.

With reference to FIGS. 11 to 17, an example of a method of placing the dressing 10 on a projecting body part, in this case the elbow, of an individual will now be described. In this example, the manipulator of the dressing 10 is also the carrier of the dressing 10. In other words, the individual sets up the dressing 10 on his own elbow.

The dressing 10 is first extracted from its package 400. The dressing 10 is then in its initial configuration.

As shown in FIGS. 11 and 12, the portion 305A of the protector 305 which covers the adhesive face 25 of the panel 20 is first removed so as to reveal this adhesive face 25 and only this face, ie the adhesive face 35 of the second The portion 305A of the protector 305 then hangs under the dressing 10 as shown in FIG.

The individual then folds his elbow (the left elbow in the example shown). From this moment, because he has to maintain his folded elbow, the individual can no longer use the hand (left) connected to the elbow, called "passive hand", to manipulate the dressing 10. Only his other hand (the right), called "active hand", can be used.

With his active hand, the individual sticks a central part of the adhesive side

25 of the dressing 10 on the lateral side of its elbow, the side of the forearm, as shown in FIG 3. The dressing 10 is glued so that its rear side 1B is close to the tip of the elbow, and that its front side 1F is oriented towards the passive hand (left) of the individual. This step makes it possible to fix the dressing 10 on the elbow, so that the individual is no longer obliged to hold the dressing 10: his active hand (the right) is released. With its active hand, the individual removes the protector 305B 305B portion covering the adhesive face 35 of the second panel 30, as shown in FIG 14.

The individual then slides his free hand (right) into the pocket 11 defined between the two sides 20, 30 (see FIG 15), and he removes these sides 20, 30 from each other, while maintaining a portion of the pan 20 in contact with its elbow, so as to deform the dressing 10 by turning it around the elbow, as shown in FIG 16.

After turning over, the adhesive faces 25, 35 are found inside the dressing, in contact with the elbow, and the non-adhesive faces 26, 36 are found outside. The dressing 10 is then in its use configuration, shown in FIG. 17, in which the non-adhesive faces 26, 36 define a convex outer surface and the adhesive faces 25, 35 define a concave inner surface.

The dressing 10 is thus fixed by gluing on the elbow. This bonding is improved by pressing the dressing 10 against the elbow during and / or after turning.

Moreover, if necessary, it is possible to use in addition a bandage (e.g. a tubular bandage), an adhesive tape or any other suitable fastening means to perfect the fixation of the dressing on the elbow. The establishment of such additional fastening means is facilitated by the fact that the dressing is already fixed by gluing on the elbow.

With reference to FIGS. 18 to 20, another example of a dressing will now be described. This example differs from that of the preceding figures only in that, on the front edges 21, 31, the surface layer 302 exceeds the contour of the other layers 303, 304 of the dressing 10, thus forming a flange 312 on each side of the opening of the pocket 11 in the initial configuration of the dressing 10. This flange 312 has an adhesive face 330 (visible in FIG 19) oriented on the same side as the adhesive faces 25, 35 of the panels 20, 30, that is to say say on the outside of the pocket 11 in the initial configuration. The adhesive face 330 of each rim 312 is covered by a removable protector (eg peelable). This removable protector is removed in order to be able to stick the flanges 312 on the lateral faces of the protruding part (eg of the elbow), as represented in FIG. 20. Such flanges 312 make it possible to improve the fixing of the dressing 10 on the protruding part. The modes or examples of embodiment described in the present description are given for illustrative and not limiting, a person skilled in the art can easily, in view of this presentation, modify these modes or embodiments, or consider others, while remaining within the scope of the invention.

In addition, the various features of these modes or embodiments can be used alone or be combined with each other. When combined, these features may be as described above or differently, the invention not being limited to the specific combinations described herein. In particular, unless otherwise specified, a characteristic described in connection with a mode or example of embodiment may be applied in a similar manner to another embodiment or embodiment.

Claims

1. Dressing comprising two panels (20, 30) joined on several of their edges so as to form a pocket (11) open on one side, each panel (20, 30) having two opposite main faces, one adhesive face (25). 35) and a non-adhesive face (26, 36), characterized in that the dressing (10) has a flat initial configuration in which the two sides (20, 30) are superimposed, in which the non-adhesive faces ( 26, 36) define the inner surface of the pocket (11), and wherein the adhesive faces (25, 35) of the panels define the outer surface of the pocket, said adhesive faces (25, 35) being covered by minus a removable protector (305), and in that the dressing (10) has a concavo-convex shape of use in which the adhesive faces (25, 35) define a concave inner surface and the non-adhesive faces ( 26, 36) define a convex outer surface, the dressing being e returned from its initial configuration to its usage configuration.

2. Dressing according to claim 1, wherein the two panels (20, 30) belong to a single blank (100), the blank being folded on itself along a fold line (M) and the two sides (20, 30) being defined on either side of this fold line.

3. Dressing according to claim 2, wherein the blank (100) is made flat.

The dressing of any one of claims 1 to 3, wherein each panel (20, 30) has a fan-shaped or dovetailed contour, the two panels (20, 30) being joined by their summits.

5. Dressing according to any one of claims 1 to 4, wherein the edges of the two sides (20, 30) are bonded together by welding.

6. Dressing according to any one of claims 1 to 5, wherein the dressing (10) is elastically deformable so that it tends to return to its initial configuration in the absence of stress.

7. Dressing according to any one of claims 1 to 6, wherein the adhesive faces (25, 35) of the panels (20, 30) are micro-adherent.

8. Dressing according to claim 7, wherein the adhesive faces (25, 35) of the panels (20, 30) have an adhesiveness such that the adhesive strength of the dressing on steel plate is between 0.5 and 100 cN / cm.

Dressing according to any one of claims 1 to 8, wherein each panel (20, 30) has a multilayer structure comprising, from the adhesive face (25, 35) to the non-adhesive face (26, 36), in in this order, an adhesive interface layer (304), a flexible absorbent layer (303) and a possible protective or support surface layer (302).

Dressing according to claim 9, in which, on the edges of the panels (20, 30) surrounding the opening of the pocket (11) in the initial configuration, the surface layer (302) exceeds the contour of the other layers ( 303, 304) of the dressing so as to form a flange (312), this flange (312) having an adhesive side facing the outside of the pouch (11) in the initial configuration.

11. Dressing according to any one of claims 1 to 10, the dressing (10) being in its initial configuration and being packaged in a single package (400).

12. A method of shaping a dressing (10) according to any one of the preceding claims, wherein the dressing (10) is initially in its initial configuration and wherein:

removing the protector (305) covering the adhesive face (25) of a first panel (20) from the two panels,

this adhesive face (25) is at least partially adhered to the lateral face of a protruding part,

the protector (305) covering the adhesive face (35) of the second panel (30) is removed,

sliding fingers into the pocket (11) formed between the two panels (20, 30), and these flaps (20, 30) are separated from each other, by keeping a portion of the first flange (20) in contact with the protruding portion, so as to deform the dressing (10) towards its use configuration. turning it around the projecting part.

13. The method of claim 12, wherein the projecting portion is a body portion to be protected, the adhesive faces (25, 35) being adhered to this body portion.

The method of claim 12 or 13, wherein the projecting portion is a body portion having a wound, or other lesion, the adhesive faces (25, 35) being adhered to that body portion.